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Haswell Overclocking Guide [With Statistics] - Page 636

post #6351 of 19539
40x / 40x, 1.2vcore & 1.25vring

I'm limited by temps until my liquid pro gets here, than I can delid

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post #6352 of 19539
smile.gif This overclocking stuff is really actually super fun! i watched a newegg video with JJ on overclocking the 4770k on a Maximus Vi Extreme

And i managed to get my 4770k running at 4.8 Ghz with my ram running at 2400 MHz

It kinda feels like i accomplished something lol! Running at 1.375v VID
post #6353 of 19539
Quote:
Originally Posted by Unknownm View Post

40x / 40x, 1.2vcore & 1.25vring

I'm limited by temps until my liquid pro gets here, than I can delid


What are you using for your CPU cooling?
post #6354 of 19539
Quote:
Originally Posted by Unknownm View Post

40x / 40x, 1.2vcore & 1.25vring

I'm limited by temps until my liquid pro gets here, than I can delid


Of course you're limited by temps, running avx2 linpack. Why? You're drawing >50% more power than a normal max CPU load/stability test like x264, and it's actually worse for testing stability at times. Stress on some parts of CPU / hammering FPU as hard as possible =/= stability testing.

I'm not sure if i heard to keep ring voltage below vcore or why that is, but i've always done that; other stuff, don't use too much VRIN for no reason. It's not helpful.

Also don't freak out about uncore. There's little reason to run it 1:1 or overclock it while you're still working on core, considering 50x/34x is faster than 49x/49x

You need the right version of CPU-Z also to see your actual vcore (1.64.0) or hwinfo is good

Do you need 0.15vcore and 0.2+vrin more than me for 40x core? My chip is like, average.
Edited by Cyro999 - 12/1/13 at 4:45pm
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post #6355 of 19539
Quote:
Originally Posted by Cyro999 View Post

Of course you're limited by temps, running avx2 linpack. Why? You're drawing >50% more power than a normal max CPU load/stability test like x264, and it's actually worse for testing stability at times. Stress on some parts of CPU / hammering FPU as hard as possible =/= stability testing.

I'm not sure if i heard to keep ring voltage below vcore or why that is, but i've always done that; other stuff, don't use too much VRIN for no reason. It's not helpful.

Also don't freak out about uncore. There's little reason to run it 1:1 or overclock it while you're still working on core, considering 50x/34x is faster than 49x/49x

You need the right version of CPU-Z also to see your actual vcore (1.64.0) or hwinfo is good

Do you need 0.15vcore and 0.2+vrin more than me for 40x core? My chip is like, average.

1.67.1 is actually the latest version of CPU-Z, and it shows vcore pretty accurately....
post #6356 of 19539
Quote:
Originally Posted by Cyro999 View Post

Of course you're limited by temps, running avx2 linpack. Why? You're drawing >50% more power than a normal max CPU load/stability test like x264, and it's actually worse for testing stability at times. Stress on some parts of CPU / hammering FPU as hard as possible =/= stability testing.

I'm not sure if i heard to keep ring voltage below vcore or why that is, but i've always done that; other stuff, don't use too much VRIN for no reason. It's not helpful.

Also don't freak out about uncore. There's little reason to run it 1:1 or overclock it while you're still working on core, considering 50x/34x is faster than 49x/49x

You need the right version of CPU-Z also to see your actual vcore (1.64.0) or hwinfo is good

Do you need 0.15vcore and 0.2+vrin more than me for 40x core? My chip is like, average.

to hit anything pass 34x uncore, I need 1.2. To stay stable @ 40x uncore I need 1.25v. LinX was show how hot it can get while prime95 AVX 2-pass is what I use for stability.
Quote:
Originally Posted by blaze2210 View Post

What are you using for your CPU cooling?

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post #6357 of 19539
Quote:
Originally Posted by Unknownm View Post

to hit anything pass 34x uncore, I need 1.2. To stay stable @ 40x uncore I need 1.25v. LinX was show how hot it can get while prime95 AVX 2-pass is what I use for stability.
Swiftech H220 w/ 2K rpm fans

The tests you're using generate levels of heat that you will never see during the course of actually using your PC, have you tried any other stability tests?
post #6358 of 19539
Since I failed in the chip lottery and can only clock my 4770k at 4.4 Ghz without going overboard on voltage (1.3 V), I decided I might as well try to get some of the power savings features of Haswell. I enabled Adaptive voltages and tested stability with RealBench for 2 hours and everything worked great. I even enabled all C-states and my idle temp dropped from 28-29 C down to like 21-22 C at the lowest state. However, something odd is going on with my video card that I am overclocking, particularly with the memory clocks when playing hardware accelerated video (cutscenes in various games). On the 290X, I had overclocked the memory to 6000 but now I need to drop it to 5600 to ensure 0 corruption. However, even 5600 Mhz might be too high - if I leave the computer idle after playing a game (enabling my overclock), sometimes the screen gets corrupted. Does C states also lower the voltages to PCI Express? I had 0 issues when I was running set voltage and disabled C states.

One setting I am not sure what it does in my Asrock Bios is: Package C State Support. It comes after enabling C3-C7 states and my manual says something about: enable CPU, PCIe, Memory, Graphics support for power saving. Does this mean when disabled then C states will never be used? If that is so, why even have this option in addition to "CPU C state support", sounds redundant. I did disable Package C State Support and the video card corruption seemed to go away on my first test, but recently there was still a small amount of corruption.
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post #6359 of 19539
Quote:
Originally Posted by blaze2210 View Post

The tests you're using generate levels of heat that you will never see during the course of actually using your PC, have you tried any other stability tests?

prime95 + heaven benchmark + aida HDD , LinX + heaven benchmark + aida HDD & Intel XTU + heaven benchmark + aida HDD. Even though I won't max out the temps rarely, I still take it has a factor to the overclock.
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post #6360 of 19539
Getting little happier with my chip now that I just ignore temps.

x44 @ 1.285v / x42 1.245v was BF4 stable. Now I've got x45 @ 1.31v / x39 @ 1.17v BF4 stable. I'll try 1.3v next, when I ran it short time previously it was fine but with double XP I don't want crashes lol.

Hell, just got XTU bench working through at x46, now even happier.
Edited by error-id10t - 12/2/13 at 4:44am
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