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2600K won't stay at full clock speed at 100% load. - Page 2

post #11 of 32
Thread Starter 
Quote:
Originally Posted by Diablosbud View Post

Try setting all of your turbo core ratios to 42 and see if that forces it to the speed you set.

it already does that automaticly when I manually change the multiplyer, my problem isn't setting the clock speed thats the easy part, I'm just trying to figure out why certain programs are locked to specific clock speeds when at 100% load.

I don't want to just guess the voltage needed when I set the clock speeds, I need something to 100% max it when testing out each speed I set and tweak the voltage as needed.
Edited by Nite - 9/26/13 at 8:22pm
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post #12 of 32
It can be a tdp limit depending on the load each program places on the CPU. Sounds like a long term/ short term tdp limiter, at least that's what it was when I fixed my wife's z68 2600k rig it displayed the exact same symptoms.
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post #13 of 32
I don't know your bios but your CPU should ramp up regardless.

1: Do you have a fixed vcore in the bios?

2: EIST every cstate and power saving feature is off in the bios?

3:Post some pics.

4: No offense but I never liked the z68 chipset. I had huge gains with my I7 2600k on an ASUS SABERTOOTH z77
I had turbos @4.6ghz or 4.7ghz with a + offset of .135V Very stable for my CPU.

5:Whats you current voltage in cpuz and how are you overclocking? You stated you have all Turbo multipliers @ 4.2 correct?

6:Also you said you can't get your CPU to idle down but you want to run your programs @ 100% load for testing correct? Have you looked in performance monitor to see what programs are holding your CPU up.

Anyways I hope you find the culprit that is throttling your OS so you can bench. I always do a clean install unless my OS is running clean. Good Luck
post #14 of 32
Thread Starter 
Quote:
Originally Posted by trancefreak64 View Post

I don't know your bios but your CPU should ramp up regardless.

1: Do you have a fixed vcore in the bios?

2: EIST every cstate and power saving feature is off in the bios?

3:Post some pics.

4: No offense but I never liked the z68 chipset. I had huge gains with my I7 2600k on an ASUS SABERTOOTH z77
I had turbos @4.6ghz or 4.7ghz with a + offset of .135V Very stable for my CPU.

5:Whats you current voltage in cpuz and how are you overclocking? You stated you have all Turbo multipliers @ 4.2 correct?

6:Also you said you can't get your CPU to idle down but you want to run your programs @ 100% load for testing correct? Have you looked in performance monitor to see what programs are holding your CPU up.

Anyways I hope you find the culprit that is throttling your OS so you can bench. I always do a clean install unless my OS is running clean. Good Luck

1. Yes, currently I'm at 1.28v @ 4Ghz (forget about the 4.2Ghz for now until I can figure out the throttling. Right now I want prime 95 to at least see 4Ghz instead of 3.7Ghz)

2. Yes (EIST, C1E, C3, C6, C7)

3. See Post Below

5. CPUz reports 1.28v at idle, and 1.200 - 1.211v at load (since I prefer to use vdroop), also the ratio range shows as 16 - 40 in CPUz next to the cpu clock which is confusing me cause I have all the EIST, c1e, c3, c6, c7 all off......

6. No the cpu will idle fine that wasn't ever a issue, just certain programs when running at 100% load won't run at the full clock speed I set in the bios, for example Prime won't go higher then 3.7Ghz
Edited by Nite - 9/27/13 at 4:48am
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post #15 of 32
Thread Starter 
here is my current settings at 4Ghz for now. Do you see anything that might be causing the cpu clock to throttle down at 100% load?





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post #16 of 32
You should be able to drop vcore to 1.16 or similar for 4ghz.

As to the unstable clock speed? I have never seen anything like that - Changing the multiplier past stock on both a p67 and z77 board has always meant that the cpu would stay @ the set clockspeed when under load for me.

Show us the frequency select bios page.
post #17 of 32
Thread Starter 
Quote:
Originally Posted by Chickenman View Post

You should be able to drop vcore to 1.16 or similar for 4ghz.

As to the unstable clock speed? I have never seen anything like that - Changing the multiplier past stock on both a p67 and z77 board has always meant that the cpu would stay @ the set clockspeed when under load for me.

Show us the frequency select bios page.

Yes I know I can run a lower voltage but only if I keep vdroop off, I prefer to leave vdroop on to prevent voltage spikes.

As for the Frequency select page, you mean the BCLK settings page?

it says this:

Maximum Supported Frequency: 300
Minimum Supported Fregquency: 80
Current Frequency: 100
BCLK Frequency Setting (10Khz) 10,000
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post #18 of 32
Z68 SLI has option called "Long duration TDP" and "Short duration TDP" under overclocking section. If you find those, set both to 250. That should fix your problem.

Here's pic:


Edited by Seid Dark - 9/27/13 at 4:59am
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post #19 of 32
Thread Starter 
Quote:
Originally Posted by Seid Dark View Post

Z68 SLI has option called "Long duration TDP" and "Short duration TDP" under overclocking section. If you find those, set both to 250. That should fix your problem.

Those options only show if I have EIST enabled, with EIST off it should run at ful clock no matter what right? it doesn't still when I load prime 95 it still gets stuck at 3.7Ghz
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post #20 of 32
Just enable EIST, power saving options didn't have any negative effect for me with overclocking stability. I have all C states etc. enabled and clock stays solid 4,4GHz across all cores when CPU is in load.
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