 |
|
21-10-2005, 10:53 PM
|
#1 (permalink)
|
|
Right Off the Assembly Line
Join Date: Sep 2005
Posts: 37
|
X1800XT vs. 7800 GTX
Hey Icecoolz,I an really sorry for what happened between us.I personally wanted to ask u a question.My brother is coming back from Canada & i have asked him to get a GFX card, he personally recommended a X1800XT (512 MB) which is to be shortly released,but i also have the 7800 GTX in my mind.Which one should i go for.If its 7800 GTX i would use it in SLI & if its a X1800XT i would use it in CROSSFIRE.Hope u reply soon.This is opened to others also.
|
|
|
|
Advertisements. Register and be a member of the community to get rid of them.
|
|
Advertisement
|
|
21-10-2005, 11:42 PM
|
#2 (permalink)
|
|
In The Zone
Join Date: May 2004
Location: New Delhi
Posts: 283
|
read this....it might clear out something!!
|
|
|
21-10-2005, 11:52 PM
|
#3 (permalink)
|
|
Right Off the Assembly Line
Join Date: Sep 2005
Posts: 37
|
Hey Sahil,Thanks a lot for that.
|
|
|
22-10-2005, 12:11 AM
|
#4 (permalink)
|
|
Wise Old Owl
Join Date: Oct 2004
Location: Parked diagonally in a parallel universe
Posts: 1,304
|
The X1800XT is better in Crossfire mode or even in Single Card mode when it comes to the 7800 GTX, but things aren't really crystal clear. While the ATI cards are better when it comes to D3D games, the Nvidias are better when it comes to OpenGL games. Although the performance difference between them otherwise isn't all that great. Of course, the X1800's 512-bit internal memory architecture, is of course, vastly superior. You've got to get yourself a Crossfire system of course, and a superior top of the line CPU, like an FX-57 or a dual core 4400+ to fully push these babies to their max.
Just wondering, casually, of course, is it possible to use two Dual 7800 GTs in SLI mode, kinda like dual SLI. Just wondering, and a bit too lazy to Google.
__________________
Face it, kid! Provoking a reaction isn't the same thing as saying something significant - Calvin
A64 3000+@2.4G/Asus A8V-DLX/1G DDR400/BBA X800 XT PE/320G HGST SATA2
Playing FEAR XP/LSW2
|
|
|
22-10-2005, 12:24 AM
|
#5 (permalink)
|
|
In The Zone
Join Date: May 2004
Location: New Delhi
Posts: 283
|
@venkat probably you can remove the "Attn Icecoolz" part and let it be just "X1800XT vs. 7800 GTX"....i think it'll help you get a lot more reviews....i hope you don't mind....it is only a suggestion....
@enoonmai did u check out my link??....
|
|
|
22-10-2005, 11:15 AM
|
#6 (permalink)
|
|
Wise Old Owl
Join Date: Oct 2004
Location: Parked diagonally in a parallel universe
Posts: 1,304
|
@Sahil: Yes, I am well aware of the benchmarks that thrash the 7800 GTXs. However, its undeniable that Nvidia has an edge over ATI in OpenGL games, and ATI to have an edge over Nvidias in D3D games. And most new game developers and publishers are "aligning" with either of these companies and optimizing their code to run better on specific cards. For example, no matter what you try, you cannot run Doom 3 as perfectly on a X800 as you can on a 6800, and vice versa for HL2. There will always be a subtle, but definitely noticeable, difference. In the end, benchmarks are nothing but "show off" numbers. True, they are indicative of performance to a degree, but a higher score does not necessarily translate to a better performance, especially when it comes to "hardware optimized" games like D3, HL2 etc. that align themselves with a particular vendor.
In the end, it really doesn't matter how much the X1800 scores over the 7800s. Because Nvidia has already won this round. Apart from a magnificient paper and actual release of the card, the 7800 series cards are very widely available everywhere, unlike the phantom series ATI cards, that are available only in limited quantities. A customer might just be tempted to go in for a 7800 GTX SLI setup rather than miss out on the X1800 XT Crossfire setup and sit and watch while his friends play at glorious resolutions.
__________________
Face it, kid! Provoking a reaction isn't the same thing as saying something significant - Calvin
A64 3000+@2.4G/Asus A8V-DLX/1G DDR400/BBA X800 XT PE/320G HGST SATA2
Playing FEAR XP/LSW2
|
|
|
22-10-2005, 11:41 AM
|
#7 (permalink)
|
|
Guest
|
haven't u read alll the benchmarks posted all over the internet
7800GTX has won the round already, it's available today, at a price far lower then even a X1800XL, X1600XT is launched to beat 6600GT but it costs as much as 6800nU ($250), which beats it by fair margin
F.E.A.R is out now, which is directX 9c based, but since there are no X1800XT to be found, people has no choice but to buy a 7800GTX to play it at max settings
Quake 4 is out now, which is OpenGL based, which playes best on 7800GTX
one thing to note, none of the benchmarks, are compleately fair, they are benchmarking a 512 MB X1800XT with 256 7800GTX, because of whch Z1800XT beats it by about 10 frames max, at the most common playing settings of 1024X768 with AA & Anis, 7800GTX beats X1800XT easily, despite having low RAM
ennonmai
Matrox parhelia already had 512 bit internal interface a long time back, which wasen't used properly at that time, so it came out as a failure, i guess this might happen with ATI too
|
|
|
|
22-10-2005, 09:49 PM
|
#8 (permalink)
|
|
Wise Old Owl
Join Date: Jan 2004
Location: New York
Posts: 1,634
|
Quote:
From these two synthetic and four "real world" game engines you can see that ATI has taken the 16 pixel shader and 8 vertex shader pipelines from the X850 generation and massively overhauled them into a highly efficient system. In many of the tests at 10x7 and 16x12 resolutions, the 24 and eight pipelines of the NVIDIA GeForce 7800 GTX could not keep up with the ATI X1800XT.
One of the most drastic leaps was in 3DMark 2005 where the 16x12 4xAA 8xAF score lead the NVIDIA 7800 GTX by over 1,100 marks.
|
Source: THG
While the ATi card has more memory, you seem to conveniently ignore that the fact that it uses only 16 pipelines as compared with 24 for the 7800GTX. Besides, when you can afford such high-end cards, a price difference of $50-100 makes no difference if you can get better performance.
|
|
|
22-10-2005, 10:00 PM
|
#9 (permalink)
|
|
Wise Old Owl
Join Date: Nov 2003
Location: India
Posts: 1,103
|
Between the x1800xt and 7800gtx i would suggest going for the x1800xt series. Its clearly faster with amazing IQ, angle independent AF, HDR+AA and avivo. Plus remember the fact that it beats the 7800gtx series without getting proper drivers. Yes, the drivers havent been optimised as yet since it is a fairly new architecture. once the drivers mature you shud see a significant increase in performance. I'll ask the same question once Cats 6 are out  we'll see who's faster then.
Nemesis pointed out this thread to me and i cudn't resist.
EDIT: Also last week a small registry tweak gave a 30% increase to x1800 cards in doom 3 with aa at higher resolutions. This is just the tip of the iceberg here.
__________________
www.techenclave.com Ecumenical Technology !:)
|
|
|
22-10-2005, 11:44 PM
|
#10 (permalink)
|
|
Wise Old Owl
Join Date: May 2005
Location: Kolkata, India
Posts: 1,838
|
7800GTX anyday .. much better architecture .... moreover the extra pipes surely helps when u turn on aa,af .....
Moreover .. having 512 MB ram over a 256 bit mem. interface doesn't give a big improvement .. if it did then the 512 MB 6800U would have been better than the 7800GT ......
|
|
|
23-10-2005, 12:28 AM
|
#11 (permalink)
|
|
Broken In
Join Date: Sep 2004
Posts: 104
|
Who told you guys that the X1800 'beats' the 7800? Everywhere, where I found the comparison, people are saying that the new card from ATi is a disappointment (compared to the 7800). While it finally brings ATi up to par with nVIDIA in terms of feature set, the performance does not make it a clear cut winner.
Below are some numbers from AnandTech:

Here the 7800 (both) is a clear winner, though Doom3/OpenGL has always been kinder on nVIDIA.

This one is interesting. The 7800 actually takes a lead in DoD (albeit an insignificant one. But me thinks that a nVIDIA card one-upping an ATi one in a game based on Source is still impressive. A driver update might change that.

Far Cry is still one tough engine, though, as far as I know, there aren't any games coming out based on it. ATi wins here.

SC: CT is the newest game, and features support for every new feature there is. ATi fairly whoops nVIDIA's @ss. Though the situation changes when you push higher, as AnandTech did later. Read on...
All tests below are to check the future validity of these cards. The kids gloves are off:

nVIDIA still the king here. No surprise here.

This I found intriguing. nVIDIA actually pull away when the settings go through the stratosphere! In Source! Did Valve have a fall out with ATi?

ATi again wins, but by a miniscule difference of .2 FPS. With the increase in resolution nVIDIA catches up. The difference is so insignificant, that it can't be called a difference. And the thing is, since ATi had a sizable lead at lower resolutions, losing ground at higher resolutions is a major drawback.

The same as with Far Cry, ATi lets nVIDIA catch up at this resolution. Not good for ATi.

nVIDIA wins here, but it probably could have gone either way.
So, going by AnandTech, X1800 is not quite the 7800 killer ATi has made it out to be. Specially, losing ground at higher settings is a big blow to ATi, since it raises questions of future proofing.
Please see: the X1800 wins at 3DMark05, with a lead of 700-1000 marks approx. However, going by synthetic benchmarks is very risky. My rig (though it barely qualifies as a 'rig'  ), P4 2.4c (with HT), i865GBF, Kingston 2x256MB PC-3200 Dual Channel, XFX nVIDIA 6600GT 128MB DDR3, Seagate 80GB 7200 gets around 3400-3450 in 3DMark05. This is really strange since a system with AMD 64 3400+, Corsair 1GB RAM, XFX 6600GT 128MB DDR3 gets approx. 3171 marks. So does that make my system better? Of course not, as in real world tests that system hangs mine to dry.
enoonmai: I don't recall reading anywhere that the X1800 is a 512 bit card, but if you say so... While a higher bit memory interface is never a bad thing, it does not guarantee a better card. Case in point, I was reading a comparison between 6600GT 128MB (with 128bit interface) and the X800 GTO 256MB (with 256bit interface)(some vendors simply call it the X800 GT). The 6600GT beat the card is most tests and came out the winner, with the exception of 3DMark05, where is lagged behind a bit. The core should have enough throughput to actually match the bandwidth provided with a 512bit interface. And the X1800 features 'only' 16 pixel pipes, compared to the 24 and 20 7800GTX and 7800GT have, respectively. The higher the no. of pixel pipes (among other things), the higher the memory bandwidth requirements.
The ATi's CrossFire technology is nowhere near SLI. You can't just pickup 2 ATi cards a put them together to get a CrossFire system, like you can with nVIDIA's SLI. You need a special CrossFire Edition master card that acts as the compositing engine and output device for the system. This card will not only cost more, but you will have a hard time finding it. Moreover, with the CrossFire in place you get limited to 1600x1200 resolution, with 60Hz. If you are putting 2 extremely expensive cards together, you wouldn’t want to be limited in anyway, especially to tear-my-eyes-out 60Hz refresh.
The initial versions of nVIDIA's SLI supported either a single slot/card running at 16X PCX or a 2 card SLI setup with both running at 8X PCX. This is what the CrossFire offers even now, when nVIDIA has already updated SLI so that both PCI-e slots run at a full 16X. This will provide a drawback to CrossFire, since no way and 8X PCX can meet with the complete bandwidth requirements of a 256bit 7800, leave alone a 512bit card. Also, as far as I know, CrossFire enabled MoBos are quite hard to find, but I could be wrong.
So, in my opinion the 7800GTX (single or SLI) is a better choice of today and tomorrow, despite the X1800 being a very impressive card. The future might be favourable to the 7800 cards, with their higher pixel pipe no.
I wish ATi could have given us the same card that they developed for the XBOX 360, with the interchangeable on demand Pixel and Vertex pipelines. Now THAT would have given nVIDIA nightmares.
|
|
|
23-10-2005, 01:01 AM
|
#12 (permalink)
|
|
Macboy
Join Date: Sep 2004
Location: Goa
Posts: 4,486
|
The thing about the 7800 is that its available. Nvidia has made sure there is a proper distribution of its new card. The 1800, God alone knows when India will be able to use it...
__________________
I'm like a bird... :)
|
|
|
23-10-2005, 02:42 AM
|
#13 (permalink)
|
|
Broken In
Join Date: Sep 2004
Posts: 104
|
Quote:
|
Originally Posted by goobimama
The thing about the 7800 is that its available. Nvidia has made sure there is a proper distribution of its new card. The 1800, God alone knows when India will be able to use it...
|
The availability of 7800 is a plus point for nVIDIA. But if Venkat's chooses it over the 7800 and his brother can get it for him, then avilability becomes a moot point, atleast for this discussion.
|
|
|
23-10-2005, 07:39 AM
|
#14 (permalink)
|
|
Apprentice
Join Date: Dec 2004
Posts: 86
|
Quote:
|
Originally Posted by AlphaOmega
enoonmai: I don't recall reading anywhere that the X1800 is a 512bit card, but if you say so...
|
The X1800 has 512bit internal memory ring bus, externally it still has a 256bit memory interface.
Oh and if anyone is interested, I just found out yesterday that BigByte has stopped stocking the XFX cards, they will now be selling only their own brand of cards, the BIG brand, if you were wondering.
I also got the rates for both the brands (inclusive of taxes) -
XFX 7800GTX - 31k
XFX 7800GT - 26k
(Rates from Rashi Peripherals)
BIG 7800GTX - 29k
BIG 7800GT - 24k
(Rates from BigByte)
I was also told by Mr. Vikas at BigByte that the BIG 7600 should probably be available in Dec.
|
|
|
23-10-2005, 09:31 AM
|
#15 (permalink)
|
|
In The Zone
Join Date: Nov 2003
Location: Mumbai
Posts: 246
|
Fir let the nvidia announce 7600 and then we will see 
About the 7800 series.
It has its own series of issues. Both cards are more than powerful enough to run your game sat max settings. I own 7800GT. And the same problem of alpha textures that exsisted in GF6 series is there with GF7 series.
What does it mean?
Well where game uses alpha estures to render shadows there will be huge problems with 7800GTX or GT.
The shadows dont get rendered correctly and appear as courrupted blocky testure.
Same things are rendered beautifully on any ati card from 9700 to X1800 series.
Thats disappoint to see. IQ wise ATI has upper hand at this moment. Its your choice what to pick.
Given me the choice to pic wither 7800GTX or X1800XT i would pick X1800XT any given day.
__________________
C2D E6600 L626A195 @ 3.42Ghz 24x7|Asus P5N32-E SLI|Crucial Ballistix DDR2 1000|8600GT|4x320GB Hitachi|SBlive 24bit|OCZ Gamextreme 700Watt PSU|Ultra 120 Extreme|Viewsonic VX2025WM 20.1'' widescreen LCD
|
|
|
23-10-2005, 11:00 AM
|
#16 (permalink)
|
|
Guest
|
even I m waiting for 7600 series, since it supports OpenGL 2.0 which i need, at last a viable upgrade from my 5900XT
|
|
|
|
23-10-2005, 01:09 PM
|
#17 (permalink)
|
|
Broken In
Join Date: Sep 2004
Posts: 104
|
Quote:
|
Originally Posted by gxsaurav
even I m waiting for 7600 series, since it supports OpenGL 2.0 which i need, at last a viable upgrade from my 5900XT
|
Doesn't the GF 6x00 support OpenGL 2.0? I think it does, as my 6600GT box says so, and so does the XFX, eVGA, BioStar site.
http://www.biostar.com.tw/products/v...ies/index.php3
http://www.xpcgear.com/evga6600tx.html
http://www.xfxforce.com/web/product/...urationId=1084
Quote:
|
Originally Posted by funkymonkey
Well where game uses alpha estures to render shadows there will be huge problems
|
Well, the 7800 is the first, and currently only, card to support AA in alpha textures. Traditionally, card can only remove the jaggies from the edges of textures, but the new AlphaAA can remove them from inside textures, where they are transparent.
The blocky shadow problem was also effecting ATi cards, at least in UT 2004, as far as I know. That problem was removed from BF2 by using ForceWare 77 or higher. ATi ruled the roost, in IQ, during the time of the Radeon 9x00 series. Even the lowly 9200 was visibly better than comparable nVIDIA cards (in Doom3, which I have seen on 9200 and 5200/5600). But now, with the 6 and 7 series, ATi and nVIDIA are more or less on par. Also, pushing quality settings, AA and AF on the 7800 will be easier, due to its 8 extra pixel pipes.
|
|
|
23-10-2005, 03:53 PM
|
#18 (permalink)
|
|
Broken In
Join Date: Mar 2005
Location: formerly black mesa resarch center,now city 17,india
Posts: 115
|
comparing anandtech and toms benchmark the 7800gtx is the fastest(1600x1200 no aa) but it seems x1800xt takes the lead with aa/af all the way up. but atis problems are availablity of x1800 xts/master cards,power consumption and the fact that nvidia can beat them any day with an ultra version.
__________________
I\'ll give u my rigs config once u give me the rig!
|
|
|
23-10-2005, 06:40 PM
|
#19 (permalink)
|
|
Broken In
Join Date: Sep 2004
Posts: 104
|
Quote:
|
Originally Posted by asdf1223
comparing anandtech and toms benchmark the 7800gtx is the fastest(1600x1200 no aa) but it seems x1800xt takes the lead with aa/af all the way up. but atis problems are availablity of x1800 xts/master cards,power consumption and the fact that nvidia can beat them any day with an ultra version.
|
ATi has really created a super-efficient engine, something nVIDIA should try to emulate. But I wonder, how far will an engine that is just efficient be able to go against an engine that is much more powerful, with 50% extra of the no. of pixel pipes? Especially when games are getting more and more shader intensive, like the upcoming Unreal Engine 3.
This can be seen when the resolution is really increased, which is even more stressing than enabling AA, as when AnandTech sets it to 2048x1536, the 7800 either increases its lead or catches up to the X1800.
Maybe, in the following generation, ATi will marry its efficiency to a powerful engine and then we will have another case like AMD and Intel, where AMD pulled away with sheer efficiency during the Athlon XP, but could not keep up with the amped up Northwood later. Then AMD not only made an efficient core, but one that was also super powerful, the Athlon64. Intel is still reeling in the aftermath...
IMO, ATi already has such a core, the XBOX 360 chip. I am betting that the only thing holding ATi back from releasing it now is some kind of agreement with Microsoft. The next gen ATi card for PCs will most likely carry that architecture, but that is still 6 months away
|
|
|
23-10-2005, 09:48 PM
|
#20 (permalink)
|
|
Wise Old Owl
Join Date: Jan 2004
Location: New York
Posts: 1,634
|
Correct me if I'm wrong, but aren't ATi already working on the R580? If that's the case, then we can expect to see a terrific card from ATi that builds up on the R520. As far as I know, the 360 is just using a modified R520 - even Nintendo will be using a custom R520 chip. I doubt if ATi will be allowed to release these custom chips for the PC market.
|
|
|
23-10-2005, 10:23 PM
|
#21 (permalink)
|
|
Broken In
Join Date: Sep 2004
Posts: 104
|
Quote:
|
Originally Posted by Nemesis
Correct me if I'm wrong, but aren't ATi already working on the R580? If that's the case, then we can expect to see a terrific card from ATi that builds up on the R520. As far as I know, the 360 is just using a modified R520 - even Nintendo will be using a custom R520 chip. I doubt if ATi will be allowed to release these custom chips for the PC market.
|
I don't think that ATi's XBOX 360 chip is a modified R520, at least from what I know about its architecture. It is codenamed Xenos, and has a unified shader architecture, meaning that the pixel and vertex shaders are not discrete hardware units. The shaders present can act as either pixel or vertex shaders. Depending on the demands of the game, any number of shaders can be set to process either. If a scene is renderer heavy more shaders can be allocated for pixel processing, or if a scene requires more geometry then more shaders can be set for vertex functionality. Talk about efficiency!
This architecture is so radically different from anything we have seen that I don't think that Xenos is merely an updated version of R520, and there are plenty of other differences.
ATi will not be allowed to release the exact same chip as the 360 to the PC. But no one can stop it from using an architecture that it has developed. Kinda like the XBOX (1) chip, which was better than the GF3, but nVIDIA released an even better one as the GF4Ti. And, if I am not wrong, XBOX GPU's shader programmability was announced before GF3.
Of course ATi is already at work on its next chip, since graphic hardware has a product cycle of approx. 6 months, ATi must have been working on the next chip for over a year. The work probably started as soon as the R520 left the chip design labs, as no one can possibly churn out a new chip from scratch in just 6 months! I would like to know if this new chip has the shader flexibility, cause vertex units have always gotten the short end till now.
|
|
|
24-10-2005, 07:31 AM
|
#22 (permalink)
|
|
In The Zone
Join Date: Jun 2005
Location: City 17
Posts: 405
|
|
|
|
24-10-2005, 08:53 AM
|
#23 (permalink)
|
|
Broken In
Join Date: Sep 2004
Posts: 104
|
BTW, does anyone know that the next version of of 3DMark is in the works. The guys at FutureMark have a policy to update the benchmark once the magical 10K mark is broken.
The new version will definately add support AGEIA PhysX PPU (oh God, not another component required for gaming  ), and will most likely support multi-threading.
3DMark05 is no longer a valid benchmark, as both nVIDIA and ATi bring unique performance enhancements to the table. And there have been plenty of developments on other components, like multi-core CPUs.
Even then, regarding GameSpot's review, at 1024x768 X1800XT 512MB gets 9240 against 7800GTX 256MB's 7749. The difference being 1491 Marks. Upping the resolution to 1600x1200, X1800XT's score is 6549, while the 7800GTX gets 5812. The difference has more than halved, to 737.
I think that at low resolutions, like 1024, X1800XT scores by having much higher frequencies, but increasing the resolution lets the 7800GTX flex its fillrate muscle.
Guess we will really have to wait for the new 3DMark (an event I find really depressing), cause 05 seems to have hit its peak.
Don't go by 3DMark scores only, I have usually found them to be better at judging non-GPU components, like CPU, RAM etc. to find which component is holding back the system. Just my opinion.
|
|
|
24-10-2005, 04:19 PM
|
#24 (permalink)
|
|
In The Zone
Join Date: Nov 2003
Location: Mumbai
Posts: 246
|
Quote:
Well, the 7800 is the first, and currently only, card to support AA in alpha textures. Traditionally, card can only remove the jaggies from the edges of textures, but the new AlphaAA can remove them from inside textures, where they are transparent.
The blocky shadow problem was also effecting ATi cards, at least in UT 2004, as far as I know. That problem was removed from BF2 by using ForceWare 77 or higher. ATi ruled the roost, in IQ, during the time of the Radeon 9x00 series. Even the lowly 9200 was visibly better than comparable nVIDIA cards (in Doom3, which I have seen on 9200 and 5200/5600). But now, with the 6 and 7 series, ATi and nVIDIA are more or less on par. Also, pushing quality settings, AA and AF on the 7800 will be easier, due to its 8 extra pixel pipes.
|
Dude what you are talking about is Gama correct AA and transperencey AA.
I am not talking about that. Have you seen the screenies of Farcry with GF6 and GF7 series. The shadows casted by trees are all messed up.
The problem was BF2 was simple driver bug and its solved. That was nothign to do with what i am talking here.
The whole GF6 and GF7 series has problems where objects casting shadows use alpha texture to do so. This is clearly visible on the entire GF6 and GF7 range. This has nothing to do with Transperencey AA or Gama correct AA. It happens irrespective of if thats enabled or not.
And no none of the ATI products have these rendering errors.
Nvidia still using Angle dependent AF which ATI has ditched with X1800 series which is good. That will give it extra edge in IQ.
|
|
|
25-10-2005, 12:58 AM
|
#25 (permalink)
|
|
Broken In
Join Date: Sep 2004
Posts: 104
|
Quote:
|
Originally Posted by funkymonkey
Quote:
Well, the 7800 is the first, and currently only, card to support AA in alpha textures. Traditionally, card can only remove the jaggies from the edges of textures, but the new AlphaAA can remove them from inside textures, where they are transparent.
The blocky shadow problem was also effecting ATi cards, at least in UT 2004, as far as I know. That problem was removed from BF2 by using ForceWare 77 or higher. ATi ruled the roost, in IQ, during the time of the Radeon 9x00 series. Even the lowly 9200 was visibly better than comparable nVIDIA cards (in Doom3, which I have seen on 9200 and 5200/5600). But now, with the 6 and 7 series, ATi and nVIDIA are more or less on par. Also, pushing quality settings, AA and AF on the 7800 will be easier, due to its 8 extra pixel pipes.
|
Dude what you are talking about is Gama correct AA and transperencey AA.
|
I know that! Its just that your talk of alpha textures reminded me of 7800's ability to apply AA to alpha. What I have written before and after are two completely different things. Actually there is a problem with ATi cards when creating shadows in UT 2004, but it seems to be an isolated problem, which does not appear in other games. Here is a link to a screenshot of the weird shadows: ATI X700 Pro in DM-1on1-Desolation:
http://i19.photobucket.com/albums/b1.../utshadows.jpg.
The blocky shadow problems, with nVIDIA cards will most likely be solved in a driver release. Also, in Far Cry you can practically clear it up with this command: "e_activeshadowmapsreceiving 1" (default is 2) (though I haven't tried it and don't think it is a perfect solution, will have to test it find out). Is the problem visible on any other games except Far Cry? I have heard of it being visible a couple to times in 3DMark05.
And this is not the only problem with cards/drivers. There was a also the texture shimmering problem with the 7800, which ATi found and reported. nVIDIA resolved it in 78 drivers. But then it was found that ATi had it too! I don't know if it has been resolved yet, but ATi had not done so till the Catalyst 5.8.
http://www.hardwareanalysis.com/content/article/1812/
Another thing. I noticed something strange when running Far Cry: The Project (the tech demo from CryTek) on my XFX 6600GT 128MB DDR3 AGP n/OC. During the entire demo, there was a weird kind of 'shimmer' (not to be confused with 'the shimmering problem') or bluriness visible on different parts of the screen, like an out-of-focus camera. First I though that it was a problem with my monitor, it was not. It was like there was a patch of bluriness on a random part of the screen. I don't know what is causing it. I ran it on ForceWare 78.01. Haven't checked it on 81.85, yet
|
|
|
25-10-2005, 11:57 AM
|
#26 (permalink)
|
|
Wise Old Owl
Join Date: Nov 2003
Location: India
Posts: 1,103
|
Quote:
|
Originally Posted by AlphaOmega
Quote:
|
Originally Posted by funkymonkey
Quote:
Well, the 7800 is the first, and currently only, card to support AA in alpha textures. Traditionally, card can only remove the jaggies from the edges of textures, but the new AlphaAA can remove them from inside textures, where they are transparent.
The blocky shadow problem was also effecting ATi cards, at least in UT 2004, as far as I know. That problem was removed from BF2 by using ForceWare 77 or higher. ATi ruled the roost, in IQ, during the time of the Radeon 9x00 series. Even the lowly 9200 was visibly better than comparable nVIDIA cards (in Doom3, which I have seen on 9200 and 5200/5600). But now, with the 6 and 7 series, ATi and nVIDIA are more or less on par. Also, pushing quality settings, AA and AF on the 7800 will be easier, due to its 8 extra pixel pipes.
|
Dude what you are talking about is Gama correct AA and transperencey AA.
|
I know that! Its just that your talk of alpha textures reminded me of 7800's ability to apply AA to alpha. What I have written before and after are two completely different things. Actually there is a problem with ATi cards when creating shadows in UT 2004, but it seems to be an isolated problem, which does not appear in other games. Here is a link to a screenshot of the weird shadows: ATI X700 Pro in DM-1on1-Desolation:
http://i19.photobucket.com/albums/b1.../utshadows.jpg.
The blocky shadow problems, with nVIDIA cards will most likely be solved in a driver release. Also, in Far Cry you can practically clear it up with this command: "e_activeshadowmapsreceiving 1" (default is 2) (though I haven't tried it and don't think it is a perfect solution, will have to test it find out). Is the problem visible on any other games except Far Cry? I have heard of it being visible a couple to times in 3DMark05.
And this is not the only problem with cards/drivers. There was a also the texture shimmering problem with the 7800, which ATi found and reported. nVIDIA resolved it in 78 drivers. But then it was found that ATi had it too! I don't know if it has been resolved yet, but ATi had not done so till the Catalyst 5.8.
http://www.hardwareanalysis.com/content/article/1812/
Another thing. I noticed something strange when running Far Cry: The Project (the tech demo from CryTek) on my XFX 6600GT 128MB DDR3 AGP n/OC. During the entire demo, there was a weird kind of 'shimmer' (not to be confused with 'the shimmering problem') or bluriness visible on different parts of the screen, like an out-of-focus camera. First I though that it was a problem with my monitor, it was not. It was like there was a patch of bluriness on a random part of the screen. I don't know what is causing it. I ran it on ForceWare 78.01. Haven't checked it on 81.85, yet
|
The console command e_activeshadowmapsreceiving 1 hasn't solved the blocky texture bug yet mate. The issue is still very much there.
Picture Link
Also If its was a driver issue like you pointed out then farcry has been out for over an year now and this issue has been noticed with Nv's 2 generations of cards mainly series 6 and 7. Let's consider that this is a driver issue, in that case its over an year, so why is it not fixed yet ?
This is the bug on 7 series card specifically a 7800gt
http://img468.imageshack.us/my.php?i...05large0cz.jpg
As for shimmering; at the defauly quality settings for AF the games still shimmer and only the hi-quality AF fixes albeit with a performance hit. So that makes one wonder whther Nv are really "over-optimising" again.
For those who dunno, the Opengl crown has been taken away from Nvidia. 
Chk out the following
http://www.techenclave.com/forums/qu...out-36983.html
http://www.techenclave.com/forums/at...res-29508.html
posted the linkies i had off-hand.
EDIT: a new fix that increases FPS without AA as well
http://www.guru3d.com/newsitem.php?id=3208
And for mc optimisations this is just the beginning, we should see similar gains in d3d games as well soon.
|
|
|
25-10-2005, 12:17 PM
|
#27 (permalink)
|
|
Wise Old Owl
Join Date: Nov 2003
Location: India
Posts: 1,103
|
Quote:
|
Originally Posted by AlphaOmega
Quote:
|
Originally Posted by Nemesis
Correct me if I'm wrong, but aren't ATi already working on the R580? If that's the case, then we can expect to see a terrific card from ATi that builds up on the R520. As far as I know, the 360 is just using a modified R520 - even Nintendo will be using a custom R520 chip. I doubt if ATi will be allowed to release these custom chips for the PC market.
|
Of course ATi is already at work on its next chip, since graphic hardware has a product cycle of approx. 6 months, ATi must have been working on the next chip for over a year. The work probably started as soon as the R520 left the chip design labs, as no one can possibly churn out a new chip from scratch in just 6 months! I would like to know if this new chip has the shader flexibility, cause vertex units have always gotten the short end till now.
|
Hehe the r580 is already taped and ready to go ! The r580 team was working separately while another team was working on the r520. besides the r580 never faced the issues that were faced by the r520  But don't expect to see the chip in the market soon. We might see the GPU socket with the r580
__________________
www.techenclave.com Ecumenical Technology !:)
|
|
|
25-10-2005, 01:42 PM
|
#28 (permalink)
|
|
Broken In
Join Date: Sep 2004
Posts: 104
|
Quote:
|
Originally Posted by blade_runner
The console command e_activeshadowmapsreceiving 1 hasn't solved the blocky texture bug yet mate. The issue is still very much there.
link
Also If its was a driver issue like you pointed out then farcry has been out for over an year now and this issue has been noticed with Nv's 2 generations of cards mainly series 6 and 7. Let's consider that this is a driver issue, in that case its over an year, so why is it not fixed yet ?
This is the bug on 7 series card specifically a 7800gt
http://img468.imageshack.us/my.php?i...05large0cz.jpg
As for shimmering; at the defauly quality settings for AF the games still shimmer and only the hi-quality AF fixes albeit with a performance hit. So that makes one wonder whther Nv are really "over-optimising" again.
For those who dunno, the Opengl crown has been taken away from Nvidia. 
Chk out the following
http://www.techenclave.com/forums/qu...out-36983.html
http://www.techenclave.com/forums/at...res-29508.html
posted the linkies i had off-hand.
EDIT: a new fix that increases FPS without AA as well
http://www.guru3d.com/newsitem.php?id=3208
And for mc optimisations this is just the beginning, we should see similar gains in d3d games as well soon. 
|
I haven't tried out the Far Cry command, as I don't have enough space on my HDD, due to DataOne ahem, "downloads"  , but many people report that it almost (not totally) clears up the problem. Again, I haven't checked it out, so I personally can't say.
As for the shimmering problem, I got my 6600GT when the 78 ForceWare was already out, so I have only tested it on ForceWare 78 and 81. There was absolutely no texture shimmerning while playing these games, with or without AA/AF (I normally test each game with and without these settings):
Doom 3: RoE - 78
GTA: San Andreas - 78
UT 2004 - 81
BF2 - 78
Halo - 81
NFS U2 - 78
Psi Ops - 78
Boiling Point - 81
Pariah - 78
Area 51 - 81
About the problem from my previous post, the Far Cry: The Project one. Has anyone else had the same problem?
nVIDIA’s next offering (G80?) will probably in the market by early 2006, and will one-up X1800. Since the X1800 has been released quite recently, I doubt that the R580’s release will coincide with nVIDIA. I really preferred it when both companies had near simultaneous releases, cause now I don’t know if nVIDIA, or ATi, is one step ahead or one step behind.
The X1800 competes with the 7800, and will end up competing with 8x00, until R580 comes out, so which one is ahead? One vendor will have to mess with their release dates to even this out.
BTW, what will nVIDIA’s next to next card be called? The 9800?
|
|
|
25-10-2005, 02:12 PM
|
#29 (permalink)
|
|
Wise Old Owl
Join Date: Nov 2003
Location: India
Posts: 1,103
|
Quote:
|
Originally Posted by AlphaOmega
I haven't tried out the Far Cry command, as I don't have enough space on my HDD, due to DataOne ahem, "downloads"  , but many people report that it almost (not totally) clears up the problem. Again, I haven't checked it out, so I personally can't say.
As for the shimmering problem, I got my 6600GT when the 78 ForceWare was already out, so I have only tested it on ForceWare 78 and 81. There was absolutely no texture shimmerning while playing these games, with or without AA/AF (I normally test each game with and without these settings):
Doom 3: RoE - 78
GTA: San Andreas - 78
UT 2004 - 81
BF2 - 78
Halo - 81
NFS U2 - 78
Psi Ops - 78
Boiling Point - 81
Pariah - 78
Area 51 - 81
|
Well the shimmering problem is related to anisotropic filtering so u notice it only with AF on at default settings. Although the prob has been claimed to be solved shimmering still exists  . And anyways angle independent AF is better than Nv's angle dependent AF.  . I've read horror stories of the Nv af shimmering in WOW and other games. There was a video as well though i don't have a link right now.
Quote:
About the problem from my previous post, the Far Cry: The Project one. Has anyone else had the same problem?
nVIDIA’s next offering (G80?) will probably in the market by early 2006, and will one-up X1800. Since the X1800 has been released quite recently, I doubt that the R580’s release will coincide with nVIDIA. I really preferred it when both companies had near simultaneous releases, cause now I don’t know if nVIDIA, or ATi, is one step ahead or one step behind.
The X1800 competes with the 7800, and will end up competing with 8x00, until R580 comes out, so which one is ahead? One vendor will have to mess with their release dates to even this out.
BTW, what will nVIDIA’s next to next card be called? The 9800?
|
About the g80 well, i don't think its going to be launched early 2006, cause Nv still has to release the mid-budget (g72) and low-end(g7?) parts for the g70 generation. Right now Nv is one step ahead but thats only for like 2 months or so since the 7800 series released. But then again ATi will have all the parts in the market before Nv i.e. the whole hi-end to low-end range. So its more or less nullified.
Haha good joke abt the 9800 ! i can imagine Geforce 9800GTX
__________________
www.techenclave.com Ecumenical Technology !:)
|
|
|
25-10-2005, 02:28 PM
|
#30 (permalink)
|
|
In The Zone
Join Date: Nov 2003
Location: Mumbai
Posts: 246
|
well the shimmering and improper filtering is not the driver bug. Its hardware. Thats how GF7 and GF6 will perform anisotropic filtering. With no AF you wont notice any shimmering bcoz its visible only when AF is turned on. It will be always there less or more depending on the games and quality mode you use.
Nvidia still uses Angle dependent AF. And till it keeps using it, perfect AF wont be achieved.
And the shadow problem exsists in many games. Not only farcry but in many games.
About The project Tech demo. The demo is designed specifically for ATI hardware. There is out of focus bands on NV hardware. the only way to reduce it a bit is using software called 3danalyser and faje the X800XT device and vendor ID. That will render the water correctly but the focus problem still remains.
__________________
C2D E6600 L626A195 @ 3.42Ghz 24x7|Asus P5N32-E SLI|Crucial Ballistix DDR2 1000|8600GT|4x320GB Hitachi|SBlive 24bit|OCZ Gamextreme 700Watt PSU|Ultra 120 Extreme|Viewsonic VX2025WM 20.1'' widescreen LCD
|
|
|
| Thread Tools |
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|
|