CPU Cooler Guide For Sandy / Ivy Bridge Cpus !!

[tkin]

Will do this tomorrow morning and post a screenshot. Even with stock intel cooler my temps were like this with core 1 and 3 running hotter than the core 0 and core 2(although difference used to be like 5-6 degrees). I was surprised to see that coz core 0 gets used the most still it was the coolest one. God knows why it was so.

Could be a problem with the sensor, the sensors are never accurate, you may have just got one with a faulty sensor, it won't cause any issues, but you may get wrong readings.

The sensor is not for consumer use, doubt if intel covers it under warranty, you might want to rma.

[rohit32407]

Could be a problem with the sensor, the sensors are never accurate, you may have just got one with a faulty sensor, it won't cause any issues, but you may get wrong readings.

The sensor is not for consumer use, doubt if intel covers it under warranty, you might want to rma.

There is one more thing that bothers me. The CPU temp in Asus Ai Suite when i was torture testing never went above 50 degrees infact it was stable at 47-48 degrees where as HWiNFO showed core temps to be around 58-60 degrees. Why that difference? Are they reading off the different sensors? Even in the BIOS my cpu temps were around 30 degrees but as soon as i entered windows and opened HWiNFO the core temps were idling at 45max(core 1) 38 minimum(core 2)

[topgear]

the lower one is tcase temp ( cpu heat spreader ) and the higher ones are tj ( cpu core temps - ie silicon chips under the cpu heat spreader ) hence the difference in temps.

[rohit32407]

the lower one is tcase temp ( cpu heat spreader ) and the higher ones are tj ( cpu core temps - ie silicon chips under the cpu heat spreader ) hence the difference in temps.

some people recommend to monitor core temps where as I found 1 link on intel communities which recommended to monitor the CPU temp(which is lower than the core temps) and never let it cross 72.6 degrees here is the link

Big difference in Core temps i5 2500K during load

Ok so i re-seated the cooler and reapplied the TIM. I have made sure that its seated properly and one thing have noticed is that idle temperatures are still a little confusing but load temps are almost identical maybe 3-4 degrees difference but nothing alarming so I think HSF is positioned correctly. I think there is something crazy going on with the sensors coz at full load with prime95 blend test running the temps are pretty much identical on 3 cores and core 0 maybe 3 degrees cooler. Anyway as long as Load temps are fine I don't really care much about idle temps. Right now I have got it OC'ed to 4.0 ghz with stable temps at 1.250 vcore and LLC to auto.
Just one more question, which temp should I be monitoring? The CPU temp on Asus Ai suite or individual core temps on HWiNFO or realtemp etc...?

here is a screenshot of my current temps at 100% load with prime95 blend test running.

[topgear]

^^ individual core temps on HWiNFO

[rohit32407]

^^ individual core temps on HWiNFO

ah! in that case I need to install this HSF yet again. My first time surely isn't going to be a breeze .

I guess i am being a little hesitant in screwing down the heatsink. It's written in Noctua's guide that you should screw it until it stops but i was hesitant coz this is my first time and I didn't know how tight it should be and i don't want to damage the CPU by putting too much pressure on it.But this time I will screw it down until it stops just as suggested in the Noctua's guide.

My TIM application is fine AFAIK coz I can see a thin layer of TIM all over the CPU IHS.

I will do the installation from scratch this time. Lets see what happens. Will post the temps here.

P.S. Should i create a separate thread coz I think I am flooding this thread a little too much?

[d6bmg]

If you are still gating 58C at stock load, something is wrong unless ambient is ~40C. It might be wrong HSF setting or wrong application of TIM or bad processor (least chance).

[rohit32407]

If you are still gating 58C at stock load, something is wrong unless ambient is ~40C. It might be wrong HSF setting or wrong application of TIM or bad processor (least chance).

I have installed HSF from scratch just 30 mins ago and load temp at OC@4.0GHz with prime95 blend test running right now are something like this. Q Fan control is disabled so all the fans are running at MAX i.e
1)Cabinet Exhaust at 2000 RPM
2)Cabinet Intake at 1300 RPM
3)HSF 2 fans(Push-Pull) at 1300 RPM each



P.S. Ambient temp is around 25-26 degrees. Only thing bothering me are the idle temps which doesnt go below 40 degrees. I think 59-60 degrees at 4.0 GHz OC at full load with prime95 are fine?

[tkin]

I have installed HSF from scratch just 30 mins ago and load temp at OC@4.0GHz with prime95 blend test running right now are something like this. Q Fan control is disabled so all the fans are running at MAX i.e
1)Cabinet Exhaust at 2000 RPM
2)Cabinet Intake at 1300 RPM
3)HSF 2 fans(Push-Pull) at 1300 RPM each



P.S. Ambient temp is around 25-26 degrees. Only thing bothering me are the idle temps which doesnt go below 40 degrees. I think 59-60 degrees at 4.0 GHz OC at full load with prime95 are fine?

Yup, its fine, you may want to try running Intel Burn Test to find max temp.

[topgear]

^^ IBT put more stress than prime95 small FFT test ??

@ rohit32407 - at-least your cpus tcase and core 2 temp has dropped below 40c - check the minimum temp column in Hwinfo and it's 34c and 35c respectively and with all these low load temps yur are good enough to hit 4.5 Ghz now

[rohit32407]

^^ IBT put more stress than prime95 small FFT test ??

@ rohit32407 - at-least your cpus tcase and core 2 temp has dropped below 40c - check the minimum temp column in Hwinfo and it's 34c and 35c respectively and with all these low load temps yur are good enough to hit 4.5 Ghz now

Pheww its good to hear some reassuring words. I was going mad over temps. Actually my tcase temp was stable and in 30's right from my first install of HSF but its the temp of that core1 and core3 that was bothering me the most. Even now Idling temps of those 2 cores are mind-boggling but load temps look fine. I don't know if its the faulty sensor or something else but i have re-seated my HSF and reapplied my TIM for 3 times now. Tried every possible method from the noctua recommended to spread to smiley etc etc but the idle temps of these two cores just wont budge so i will just leave them there as long as load temps are fine I don't really care much.

I will try to hit 4.5, right now I am just trying to get familiar with the bios and its options. Playing with offset settings at the moment. Will try for 1.2 vcore for 4 ghz(too less?). I tried to set the vcore manually bt then even on idle condition vcore gets fixed at 1.23-1.24 where as when its under stress LLC kicks in and vcore drops to 1.192. So I thought maybe playing with offset settings might help with lower idle vcore hence lower idle temps. In any case i think it would be better if there is no unnecessary voltage when its not required. Do correct me if I am going about it the wrong way.

P.S. Did IBT in "High" stress settings(20 cycles). Max core package temp was 67 with core 1/3 being hottest- 65-67 and core 0/3 being coolest 60-64

[tkin]

^^ IBT put more stress than prime95 small FFT test ??

@ rohit32407 - at-least your cpus tcase and core 2 temp has dropped below 40c - check the minimum temp column in Hwinfo and it's 34c and 35c respectively and with all these low load temps yur are good enough to hit 4.5 Ghz now

It does, IBT(linpack) now has support for AVX, which puts a wild stress on the CPU, highest I had ever seen.

Only applicable to CPUs with AVX support and win 7 sp1 or win 8.

[topgear]

^^ Thanks for the info and now even prime95 has support for AVX - so if anyone can compare the latest version of prime95 and IBT side by side to see which one generates maximum heat ( or puts maximum loads on cpu ) that would be great.

[eagle06]

Guys my stock temperature is around 40-50 and while running prime 95 it is going to 97 C in 10minutes...I thought TIM gone bad and reapplied new TIM(deepcool z5). But the temperature is same.

I am using intel stock cooler,i5 2500k stock speed,gigabyte p67a-ud3-b3.

I noticed my cpu fan speed in bios/hw montor is around 600rpm..I even disabled speed control in bios but the cpu fan speed doesnot go up. Is my CPU fan failing or is it the sensor fault..?




some times i see the max cpu fan speed as 675000rpm!!

[ico]

^ Flash the latest BIOS and see if it helps.

Time to buy a cooler anyway. Intel stock cooler is rubbish.

[d6bmg]

@eagle06: Sensor problem, nothing to worry about.

[eagle06]

Today i bought CM hyper tx3 and installed it. The cpu fan speed is still around 645rpm...When i set cpu speed control to normal the cpu fan runs very slow like 56rpm(i can see in bios when temperature is 38 C).

Then I connected the CPU fan plug to SYS_FAN1(3 PIN) socket and restarted.I can see increase in fan speed now bios shows 2200+rpm (fan is loud now so its really fast now).

I am using the latest UEFI bios U1a and also cleared cmos and loaded optimised defaults still when i connect it to CPU_FAN(4 PIN) socket fan runs very slow.

what should I do now?? Is there a problem with my mobo/cpu?? Or should I just ignore it and use SYS_FAN1 socktet??


UPDATE: downgraded to normal bios F9 from UEFI. Now CPU fan is working as expected, 2000rpm in prime 95 torture test.
idle ~35 and 62 max temperature(TX3 is good )

I think i should not upgrade to new bios next time when everything is working fine ;P(but in UEFI windows boots up fast)

[topgear]

If it ain't broke, don't fix it anyway, for faster boot time consider buying at-least a 60GB SSD.

[mastercool8695]

i have an i5 2310 with intel dh61ww
the temps at medium load (4-5) tabs, utorrent, kaspersky, a full scan operating, two folders open one 700 mb 480 p video is about 64 ~66 degree C
and at normal conditions (only one browser with 2 tabs , kaspersky (no scan) , utorrent , one video ) the temps are 45-51 degree C

and the cpu fan aperates at an average 1000 rpm.
is it ok ?
temp and rpm are from Speccy
please tell me if this is ok ??

thanks

[topgear]

Kaspersky uses hat much cpu ?? can you confirm the cpu usages from the task manager of load no. 1 ( ie browsing,scanning, video playback, utorrent ) and load no. 2 - 1k rpm fan speed may be due to automatic cpu fan speed control option under bios - disable it and see how much cpu speed you can get - for real time monitoring use Hwinfo along wth IBT for 5-10 mins and from HWinfo screen see the temp of cpu and cpu fan speed - this will give some clear idea about the cpu's load temp and fan speed under load.

64-66c though is on higher side but still within safe range and considering the current climate status idle and load temps should be ~40c and ~60c respectively.

[mastercool8695]

whats IBT ??

[Skud]

Intel Burn Test.

[Myth]

The first post in the thread could use some updating. New coolers, tims and prices.

[topgear]

just PM tkin

[Myth]

just PM tkin

I thought he might be watching this thread.
Anyway, pm is better.

[tkin]

This thread has an update long overdue, I will update this over the next week(I need to read up a bit), I urge you to contribute what you can, reviews, prices, links, articles(written by you), pics(800x600).

[topgear]

For TiM : Noctua NT-H1 or DeepCool Z5

For coolers : Time to replace Hyper 212+ with Hyper 212 Evo

[Myth]

Is it possible to add a small section on how to clean the old tim and re-apply new one. Dos and Don't s would be most helpful.

For coolers: Add liquid cooling solutions.

[Thetrueblueviking]

^^One of the better videos on the same -

[topgear]

Is it possible to add a small section on how to clean the old tim and re-apply new one. Dos and Don't s would be most helpful.

For coolers: Add liquid cooling solutions.

I think you we should have a new thread for that as it applies to all cpu and gpus too - finding it would be more easier this way. Anyway, always use your wits while ceaning and applying TiM and yes, we do need some Liqid cooling solution - start with Corsair H100