Dual Core Vs 64 bit

[max_demon]

Which is better ?
Dual core or 64 bit?

[blackpearl]

Dual core ofcourse.

[dOm1naTOr]

All dual cores available are 64 bits man. So dual core is 2x64bit CPus.
So Dual core will be anyday better than a single 64 bit core.

[max_demon]

Originally Posted by aravind_n20

All dual cores available are 64 bits man. So dual core is 2x64bit CPus.
So Dual core will be anyday better than a single 64 bit core.

i m saying
Dual core 32 bit Vs Single Core 64 bit

[darklord]

Is there any 32bit Dual core ?????

[dOm1naTOr]

@darklord
ya, older opterons, Xeons and some IBM proccys

[darklord]

Originally Posted by aravind_n20

@darklord
ya, older opterons, Xeons and some IBM proccys

Hmmmm....
All opteron were based on K8 architecture which is AMD64, so not a single Opteron is 32 Bit

Dual Core Xeon came in two cores, 'Dempsey' and 'Woodcrest' both made with 65nm and are 64bit

As for IBM, their first Dual Core CPU was the 'Power4' and it also was 64bit.

So i think it is safe to assume, there never was a 32bit Dual Core CPU,am i right ?

[blackpearl]

Even if there is 32 bit dual core they would still win against 64 bit single core.
Compare the performance between a 64 bit single core PC running Windows 64 bit and a dual core running Windows 32 bit. Who wins? dual core. why?
Because performance increase of Win 64 bit over Win 32 bit is marginal. But performance increase a dula core vs single core is 30% to 60% depending upon the type of application you are running.

[kumarmohit]

Originally Posted by aravind_n20

All dual cores available are 64 bits man.

Dude update your knowledge, Intel Core Duo (Not Core 2 Duo) is a 32 bit dual core processor. It does not carry the Intel's EM64T instruction set, which makes Intel processor's 64 bit.

[saurav29]

-----Edited as no way have time to confirm the facts-------

[darklord]

Originally Posted by saurav29

Nope not all dual cores are 64 bits (both Pentium D and C2D) inclusive ....

Agreed all server CPU listed by @Darklord are Dual Core and 64 bit....

Dual core will consits of twice number of cpu registers(comapred with singleton) whether they work on shared cache(Pentium D) or seperate cache (C2D) anyway they will give a kickass performance compared to singleton 64bit cpu....
Wait...... Just aien't over yet...
these bits coressponds to they storage of cpu registers ( AX,BX,CX,DX,SS,ES) since previously they were 32 bit hence also the instruction given to them to perform most of the applications are 32 bit binaries or can be ported to them as of present the 64 bit is not in much use yet.. presently they will perform better to 64 bit but may be when most of the binaries are 64 bit and if we cruch the numbers real closely ... hmmmm.. subtracting the overheads performed by 32 bit core to implement a 64 bit instruction........ i can say it just might a 64 bit race ahead of dual core.... then i guess i cannot be sure just of yet.........]

peace
raj

I am having a hard time finding NON 64bit Dual Cores, care to show me some ?

Dual core will consits of twice number of cpu registers(comapred with singleton) whether they work on shared cache(Pentium D) or seperate cache (C2D) anyway they will give a kickass performance compared to singleton 64bit cpu....-----> I thought Dual Core meant,the CPU had 2 x physical cores meaning its like having 2 physical processors.isnt it ? correct me if i am wrong :S

shared cache(Pentium D) or seperate cache (C2D)------> Nope,its the other way round.C2D have single large cache which can be shared by both cores.

kickass performance compared to singleton 64bit cpu-----> I think it doesnt take a rocket scientist to say that Dual Core which is like having 2 Physical CPUs will be faster than a Single Physical CPU

[blackpearl]

Hello!!! Pentium D is a 64 bit dual core processor. I have it and I've installed FC5 64 bit on it.
__________

Originally Posted by kumarmohit

Dude update your knowledge, Intel Core Duo (Not Core 2 Duo) is a 32 bit dual core processor. It does not carry the Intel's EM64T instruction set, which makes Intel processor's 64 bit.

Just did a search on google. I agree with this. They are 32bit dual core.

[shantanu]

this question does not makes sense... DUAL CORE Vs. 64bit ... WTh man...

[saurav29]

DUH!!!! the cpu core consits of these cpu registers only that makes up the (ALU+MU+CU) you got your procy CORE.... Though i am preoccupied nowadays..... i am sure there are 32 bit dual core cpu right now... do as blackpearl said...... there are results.... supporting that i did not dig enough so plz forgive if its wrong........ It has been a long time since i have done some digging with whats is what...... but shared cache in C2D doen't make sense...... if they are independant cores any way editing the above post to avoid any confusions..........

peace
raj

[max_demon]

i put up this ques coz my friend has Core 2 Duo and i have AMD athelon 3500+

lookes like he is winning

[shantanu]

offcourse he will win coz C2d beats athlon 64 by a huge difference, but X2 can perform somewhat close to C2d series....

[sam9s]

Originally Posted by max_demon

i m saying
Dual core 32 bit Vs Single Core 64 bit

There is no dual core 32 Bit for desktops.....Core Duo is/was for the notebook platform.....and that is where Intel came with actual 64 Bit dual cores for the desktop market......

[shantanu]

Originally Posted by sam9s

There is no dual core 32 Bit for desktops.....Core Duo is/was for the notebook platform.....and that is where Intel came with actual 64 Bit dual cores for the desktop market......

well what SAM says is absolutely right , but AMD came up with the first ever 64bit processor in the world....

[sam9s]

Originally Posted by shantanu_webmaster

well what SAM says is absolutely right , but AMD came up with the first ever 64bit processor in the world....

That is true, no matter how rude that sounds Intel though being at the top right now, copied the exact architecture of the 64 Bit instruction set that AMD introduced.......

[premsharma]

Originally Posted by kumarmohit

Dude update your knowledge, Intel Core Duo (Not Core 2 Duo) is a 32 bit dual core processor. It does not carry the Intel's EM64T instruction set, which makes Intel processor's 64 bit.

Dead right

[darklord]

Originally Posted by kumarmohit

Dude update your knowledge, Intel Core Duo (Not Core 2 Duo) is a 32 bit dual core processor. It does not carry the Intel's EM64T instruction set, which makes Intel processor's 64 bit.

Lol i was expecting this to come up.Intel Core Duo as you mentioned is 32bit,agreed but it is not a desktop chip

[kumarmohit]

Originally Posted by shantanu_webmaster

well what SAM says is absolutely right , but AMD came up with the first ever 64bit processor in the world....

Actually it was Intel again, Intel Xeon series of processors was(is) the first true 64 bit processor.
AMD's 64 bit processor is a 32 bit instruction set, STUCK on an existing 32 bit processor, thus making it 64 bit. Its not a native 64bit processor.
Yes, AMD did come up with the first dual core 64 bit processor AFAIK

And I do not think we are differing on the facts dealing with the CPU platform, Laptop, Desktop or Server.

[darklord]

Originally Posted by kumarmohit

Actually it was Intel again, Intel Xeon series of processors was(is) the first true 64 bit processor.
AMD's 64 bit processor is a 32 bit instruction set, STUCK on an existing 32 bit processor, thus making it 64 bit. Its not a native 64bit processor.
Yes, AMD did come up with the first dual core 64 bit processor AFAIK

And I do not think we are differing on the facts dealing with the CPU platform, Laptop, Desktop or Server.

AMD's 64 bit processor is a 32 bit instruction set, STUCK on an existing 32 bit processor, thus making it 64 bit-----> Huh ???? what kind of logic is that ? Do you mean to say its actually a 32bit CPU ? Dude wake up !

Its not a native 64bit processor.-----> And why is that so & if its not 64Bit then what is it ? and what exactly is meant by 'Native' 64 bit ? please explain.

Actually it was Intel again, Intel Xeon series of processors was(is) the first true 64 bit processor.-----> Nope i dont think so.It was the Itanium that was a 64bit processor ,it could emulate 32bit apps but the performance was pathetic.

The difference with AMD A64 is that it can run both 32bit as well as 64bit apps.when a 64bit app is used,the CPU works in true 64bit mode.

[aryayush]

Damn it! All chips apart from the one I have are 64-bit. I am the only one that ended up with 32-bit dual-core!

[kumarmohit]

Originally Posted by darklord

AMD's 64 bit processor is a 32 bit instruction set, STUCK on an existing 32 bit processor, thus making it 64 bit-----> Huh ???? what kind of logic is that ? Do you mean to say its actually a 32bit CPU ? Dude wake up !

Its not a native 64bit processor.-----> And why is that so & if its not 64Bit then what is it ? and what exactly is meant by 'Native' 64 bit ? please explain.

Please refer this - http://en.wikipedia.org/wiki/Em64t and this - http://en.wikipedia.org/wiki/IA-64

More differences can be found here:http://www.planetamd64.com/lofiversi...php/t5410.html

Originally Posted by darklord

Actually it was Intel again, Intel Xeon series of processors was(is) the first true 64 bit processor.-----> Nope i dont think so.It was the Itanium that was a 64bit processor ,it could emulate 32bit apps but the performance was pathetic.

Totally agree, my mistake, it was Itanium

[saurav29]

Hey friends find something .... Still low on time so will post later.....
@Darklord thanks for pointing it out that C2D has a shared cache makes sense now since two cores can shares cache and work smartly... they can utilize the whole cache as a single core does at one hence virtually 4 MB cache means 4 MB for each... core else dedicated means only 2 MB for each... with Locality of refrence and LRU and read ahead ...... hmmmmmmm means greater performance...

the link for the instruction set is Ok Actually 3 White papers including architecture is http://www.intel.com/technology/architecture/coremicro/
so if anyone has time to kill please download it and read and post to remove any confusions about architecture........

@ Darklord Now true 64 bit procy ...needing to emulate 32 bit and performance sucks does makes sense ....... i check that out too.... AFAIK there shall be no problem for a procy 64 bit to handle 32 or 16 or 8 bit instruction set.........

C ya later ....
Peace
raj

[keith_j_snyder2]

I don't know why is so difficult for u guys to understand.Ok here what the topic was The 64Bit single core or the 32/64 bit Dual Core?

THE ANSWER IS SIMPLE:

WHICHEVER COMES LATER (DUAL CORE) IS BETTER.IT DOESN'T MATTER IF IT IS INTEL OR AMD THE DUAL CORE RULES!!!

I hope it is clear to everyone.
End of Discussion.

[saurav29]

Originally Posted by keith_j_snyder2

I don't know why is so difficult for u guys to understand.Ok here what the topic was The 64Bit single core or the 32/64 bit Dual Core?

THE ANSWER IS SIMPLE:

WHICHEVER COMES LATER (DUAL CORE) IS BETTER.IT DOESN'T MATTER IF IT IS INTEL OR AMD THE DUAL CORE RULES!!!

I hope it is clear to everyone.
End of Discussion.

Oops i thought everybody here was intrested in knowing why.......
Anyway.....

[darklord]

Originally Posted by keith_j_snyder2

I don't know why is so difficult for u guys to understand.Ok here what the topic was The 64Bit single core or the 32/64 bit Dual Core?

THE ANSWER IS SIMPLE:

WHICHEVER COMES LATER (DUAL CORE) IS BETTER.IT DOESN'T MATTER IF IT IS INTEL OR AMD THE DUAL CORE RULES!!!

I hope it is clear to everyone.
End of Discussion.

The answer was given and agreed upon by many here long ago..... The discussion going on is about something else,although related but is OT for sure

[deathvirus_me]

Originally Posted by kumarmohit

Actually it was Intel again, Intel Xeon series of processors was(is) the first true 64 bit processor.
AMD's 64 bit processor is a 32 bit instruction set, STUCK on an existing 32 bit processor, thus making it 64 bit. Its not a native 64bit processor.
Yes, AMD did come up with the first dual core 64 bit processor AFAIK

And I do not think we are differing on the facts dealing with the CPU platform, Laptop, Desktop or Server.

Huh ??? U sane ??? AMD introduced the first 64 bit CPU's for desktop processing ... duddeee ...

http://www.amd.com/us-en/Processors/...5e9493,00.html

Infact , AMD cpu's have much better performance under 64 bit environment compared to the Intel counterparts ...