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Low Quality I5-3570k CPU? OC temperature/vcore too high with Hyper 212 Evo

post #1 of 57
Thread Starter 
I followed the first post in this thread (http://www.overclock.net/t/1198504/complete-overclocking-guide-sandy-bridge-ivy-bridge-asrock-edition) as best I could but I think my temps are a bit high.
Should I lower the OC?
Get more case fans?
I have been reading that people with the same setup get 70* all day under load at 4.00ghz

I have:
CPU: i5-3570k: OC to 3.8ghz
MOBO: ASRock z77 Pro4
Cooler: CM Hyper 212 Evo - "Automatic" mode set at 55*C level 8
Offset Voltage: +0.005v ; Additional Turbo Voltage: +0.004v
The CPU LLC is still set on "Auto". I only have options 0%, 50% and 100%. Which should I set it to?
Corsair Carbide 200r case with 2 120mm Fans at level 8
I ran prime95 on blend for 2 hours and got 79*C 1.208v max for 3.8ghz OC
I ran prime95 on blend for 2 hours and got 67*C 1.114v max for stock clocks
Even under STOCK "Automatic" mobo controlled voltage, with only changing my multiplier to 38 (3.8ghz), my core volts has capped at 1.224v.

Attached screen shots that I hope will help

OC to 3.8ghz with settings following the Guide



Stock Clocks



Stock settings with only the 38 multiplier changed



Ideally, I want a 4ghz OC with temps around 70*C and Vcore under 1.2v.

Thanks for the help!
post #2 of 57
Well, try to reseat your CPU cooler and reapply some good thermal paste, As of the vCore, if it is at stock then at 4.0 I doubt you can go any lower, but give it a try, but try the reseating and thermal paste reapplication first
     
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post #3 of 57
I have an Asrock Extreme-4M and have the same LLC settings. Also a Coolermaster 412S cooler, so a similar one to what you have.

In my case:
LLC 0% gives very high voltage spikes and the highest effective Vcore
LLC 50% gives a moderate vdroop but very stable voltages (slighly below VID).
LLC 100% gives a large vdroop (vcore much lower than VID).
this is opposite to what you might see on other boards.

Your temps are high, because your voltage is high
I recommend you do the following:

set the multiplier to All Core 40x
disable Turbo
LLC 50%
Offset +0.02V (this will compensate for the vdroop a bit to give you more or less the same voltage as VID).

Boot and check your vcore under load.
Your Cpu should be stable @ 4Ghz with vcore between 1.1-1.15V or even less
If your vcore is higher than that, lower the offset in steps of 0.01V and test the stability until you find your lowest limit (and then add +0.01V for safety).

You should be able to lower your temperatures significantly. Let us know how it went. If you want help getting a higher O/C, feel free to PM me.
Edited by glina - 1/29/13 at 9:23am
post #4 of 57
I have found setting the voltage on my Asrock extreme 4M is a bit of a black box - when left to itself (auto settings), you seem to get much higher voltages that you want. You'll have to play around with the offset voltages and turbo voltages methodically to get the vcore where you want.

Regarding the temperatures, carefully re-seating the cooler with new good thermal compound will probably do the trick.
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post #5 of 57
Thread Starter 
Quote:
Originally Posted by Pedroc1999 View Post

Well, try to reseat your CPU cooler and reapply some good thermal paste, As of the vCore, if it is at stock then at 4.0 I doubt you can go any lower, but give it a try, but try the reseating and thermal paste reapplication first
Quote:
Originally Posted by frogger4 View Post

I have found setting the voltage on my Asrock extreme 4M is a bit of a black box - when left to itself (auto settings), you seem to get much higher voltages that you want. You'll have to play around with the offset voltages and turbo voltages methodically to get the vcore where you want.

Regarding the temperatures, carefully re-seating the cooler with new good thermal compound will probably do the trick.

I will wipe off the paste and reuse the CM paste. A "pea" size is recommended in the middle, correct?
I also dont know if it matters, but I have the Pro4, not the extreme.
Quote:
Originally Posted by glina View Post

I have an Asrock Extreme-4M and have the same LLC settings. Also a Coolermaster 412S cooler, so a similar one to what you have.

In my case:
LLC 0% gives very high voltage spikes and the highest effective Vcore
LLC 50% gives a moderate vdroop but very stable voltages (slighly below VID).
LLC 100% gives a large vdroop (vcore much lower than VID).
this is opposite to what you might see on other boards.

Your temps are high, because your voltage is high
I recommend you do the following:

set the multiplier to All Core 40x
disable Turbo
LLC 50%
Offset +0.02V (this will compensate for the vdroop a bit to give you more or less the same voltage as VID).

Boot and check your vcore under load.
Your Cpu should be stable @ 4Ghz with vcore between 1.1-1.15V or even less
If your vcore is higher than that, lower the offset in steps of 0.01V and test the stability until you find your lowest limit (and then add +0.01V for safety).

You should be able to lower your temperatures significantly. Let us know how it went. If you want help getting a higher O/C, feel free to PM me.

So turn off Turbo and run a consistent offset voltage? Offsent +0.02v sounds like a bit much for me. I have start at Offset +0.01v and see if it boots/runs well with that.
vdroop is bad, correct?

Thanks for all the help so far!
post #6 of 57
vDroop is bad, just to clear that up.

A pea sized amount running the height of the chip, it varys from dual,quad and six core but the most efficient for quad is a line running the height of the chip, not the lengh. What thermal paste have you got on hand?
     
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post #7 of 57
Quote:
Originally Posted by NopeNope View Post


I will wipe off the paste and reuse the CM paste. A "pea" size is recommended in the middle, correct?
I also dont know if it matters, but I have the Pro4, not the extreme.
So turn off Turbo and run a consistent offset voltage? Offsent +0.02v sounds like a bit much for me. I have start at Offset +0.01v and see if it boots/runs well with that.
vdroop is bad, correct?

Thanks for all the help so far!

My cpu was also very hot running - I reseated the cooler twice, then exchanged the thermal compound to MX4 (twice) and all for nothing. I finally delidded my cpu.

As for my recommendation of the +0.02V offset - with LLC 50% this will still give you an effective negative offset because of vdroop (comparing to VID, which you can read out for example with Hwinfo64).

My cpu

43x103 +0.02v offset:
vid 1.18V ; vcore 1.16V

45x103 +0.03v offset
vid 1.26V ; vcore 1.24V

So about 0.04-0.05v offset is needed to effectively compensate for the vdroop.

Almost forgot - also try lowering the CPU PLL to 1.586V, this should give you another 3-4C drop.
post #8 of 57
What could be contributing is your board's poor VRMs. D-PAK mosfets produce oodles of heat and can possibly result you in having to use higher voltages for lower frequencies, something you are already just "dealing with".

Correction, LF-PAK, sin0822 rates that as a 2 instead of a the D-PAK's 1 =\

Pulling all of that information from here which is linked here

It is also a 4 phase, of mediocre quality, not sure what to think about that.
Edited by FlashFir - 1/29/13 at 10:36am
post #9 of 57
That didnt come to my head, he is right, lower quality VRMs will need more volts to mainatain a certain speed compared to higher end VRMs
     
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post #10 of 57
http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end

His guide states essentially: findings conclude that the lower the temperatures, the lower the voltage needed.

Ivy is particular sensitive. Find this image and the paragraph right beneath it.
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