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Haswell Overclocking Guide [With Statistics] - Page 986

post #9851 of 19539
Quote:
Originally Posted by JJFIVEOH View Post

Odd thing happens on mine when I run Prime95. If I run the In Place Large FFT's test that claims to have maximum heat, my comp hits around 82°. But if I run small FFT's it spikes right up to 99° and I have to immediately stop it. Of course I'm only doing this for a very short time to see if I can solve the adaptive spikes (although I think it's been widely documented in this thread that I'm probably wasting my time). This is with an H100i.

Running Prime with Adaptive voltages is a good way to kill your chip....The voltage spikes are part of the behavior of Adaptive mode....If you want to have your voltage drop, then you'll need to set your cache and core voltages to Override mode, and enable the C7 state - not all of the C-states, just the C7 state....
post #9852 of 19539
Quote:
Originally Posted by JJFIVEOH View Post

Odd thing happens on mine when I run Prime95. If I run the In Place Large FFT's test that claims to have maximum heat, my comp hits around 82°. But if I run small FFT's it spikes right up to 99° and I have to immediately stop it. Of course I'm only doing this for a very short time to see if I can solve the adaptive spikes (although I think it's been widely documented in this thread that I'm probably wasting my time). This is with an H100i.


As said above you are playing wiht fire with adaptive voltage on though. I wouldnt run prime with those settings.
Edited by Wirerat - 2/9/14 at 7:34pm
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post #9853 of 19539
Quote:
Originally Posted by Wirerat View Post

As said above you are playing wiht fire with adaptive voltage on though. I wouldnt run prime with those settings.

Yeah, I don't plan to run Prime any more. It's obvious adaptive isn't the way to go. The reason I was doing this was because I wanted to set it up to run 4.6-4.7 IF there wasn't a spike in voltage using adaptive. But I've come to realize this CPU can't even get to 4.6 using override and 1.44 VCore. I just don't have a good combination, so at this point I'm just wasting time. C7 doesn't do anything for my voltages, I don't know why. It was running great at 4.4 and adaptive, but it's too risky. My best bet is to stick with 4.2-4.3 and adaptive because I can get away with probably 1.3-1.31 VCore would make any adaptive spike well within the safe range if it ever happens.
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post #9854 of 19539
Quote:
Originally Posted by JJFIVEOH View Post

Yeah, I don't plan to run Prime any more. It's obvious adaptive isn't the way to go. The reason I was doing this was because I wanted to set it up to run 4.6-4.7 IF there wasn't a spike in voltage using adaptive. But I've come to realize this CPU can't even get to 4.6 using override and 1.44 VCore. I just don't have a good combination, so at this point I'm just wasting time. C7 doesn't do anything for my voltages, I don't know why. It was running great at 4.4 and adaptive, but it's too risky. My best bet is to stick with 4.2-4.3 and adaptive because I can get away with probably 1.3-1.31 VCore would make any adaptive spike well within the safe range if it ever happens.

C-state (C7 etc) voltage drop using manual/override mode is an Asus only feature. To get your volatge to drop @ idle you need adaptive mode on ASRock boards.

You only get voltage spikes from adaptive mode when you run AVX code.
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post #9855 of 19539
Quote:
Originally Posted by Anth Seebel View Post

C-state (C7 etc) voltage drop using manual/override mode is an Asus only feature. To get your volatge to drop @ idle you need adaptive mode on ASRock boards.

You only get voltage spikes from adaptive mode when you run AVX code.

Its not an ASUS only feature, it works on MSI boards also....
post #9856 of 19539
Thats good to hear.

Also, for stability testing, I recommend your most cpu demanding games. I use Farcry3, SC2 and BF4.

In previous generations, stress tests were 'the worst case scenario" and a good way to find stability for games. With haswell, games are a better sign of stability from my experience.
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post #9857 of 19539
Quote:
Originally Posted by Anth Seebel View Post

C-state (C7 etc) voltage drop using manual/override mode is an Asus only feature. To get your volatge to drop @ idle you need adaptive mode on ASRock boards.

You only get voltage spikes from adaptive mode when you run AVX code.

Quote:
Originally Posted by blaze2210 View Post

Its not an ASUS only feature, it works on MSI boards also....

True it's also an MSI feature, it doesn't drop any voltage on my board at all. Anth, I'm using an MSI board. Sorry for the confusion I know it's not in my sig. This is a system I put together for somebody and I was just wanting to put together a nice safe 4.4-4.7 OC on it. I'm not as familiar with Haswell as I am Sandy and Ivy. Just figured I might come over here and learn a few things and get some much appreciated help.
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post #9858 of 19539
Quote:
Originally Posted by JJFIVEOH View Post


True it's also an MSI feature, it doesn't drop any voltage on my board at all. Anth, I'm using an MSI board. Sorry for the confusion I know it's not in my sig. This is a system I put together for somebody and I was just wanting to put together a nice safe 4.4-4.7 OC on it. I'm not as familiar with Haswell as I am Sandy and Ivy. Just figured I might come over here and learn a few things and get some much appreciated help.
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post #9859 of 19539
Thread Starter 
Quote:
Originally Posted by lilchronic View Post

cpu-z i think reads the cpu VID so it wont show the voltage drop

override voltage cstates enabled and c7................... c3 c6 disabled



BTW how many time or loops do you run x264

20 times, or overnight to be even more sure.

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post #9860 of 19539
Wizzie, all Asus mobo's drop their volts according to load if c states are enabled

The ROG series, the TUF series and the z87 (gold) series.

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