Failing 4.4 ghz 2600k overclock.

[Christopher Mannion]

So, first off, I have to say that i am a complete noob at overclocking, literally just started today. Just in case you need an idea where i got my stuff from, i followed this video completely https://www.youtube.com/watch?v=R0wN3W_BzhY.

So, I at first got my 2600k at 4 ghz, ran prime 95 and played some games, no problems, no blue screens. This was with the voltage in offset mode, with the offset set to +.005 V. The voltage on cpuid read 1.296 - 1.304 for 4 ghz and hovered around 60-70 degrees with prime95 after awhile. Though once it gets to 70, it went back down to 58-65 after a few wins around 69-70 area.

So then i wanted to go to 4.4 ghz, which is what he does in the video, so i did all of that, set the Wattage limits to 150 each, and set the voltage offset to +.020V. This gave me bluescreens galore after about 30 minutes of prime95. I then set the c3 and c6 cpu configs off, as i read it will be more stable, still go the BSOD, so i upped the voltage offset to +.025, and still got BSODs. The BSOD messages were clock_watchdog_timeout, machine check exception, and whee_uncorrectable_error. The temps were about 70C when the BSODs occurred, so to me at least, that doesnt seem like an overheating problem. So what could be causing these BSODs? I have been reading about stable clocks for the 2600k at 4.4 ghz and have even passed those quite a bit. I followed the wattage limits, and disabled c3 and c6, turned off spread spectrum thing in the bios, Internal PLL voltage is disabled, though i tried it with enabled and still got a BSOD. Also, intel speed step is enabled, along with hyperthreading.


My specs:

Nvidia Evga Gtx 970 sc acx 2.0
Intel i7 2600k
Power supply: http://www.newegg.com/Product/Product.aspx?Item=N82E16817341018
Motherboard: http://www.newegg.com/Product/Product.aspx?Item=N82E16813157229
Windows 8.1
I have the Hyper212 EVO as my heat sink.


Thank you for any help, much appreciated Prime95 has been running at 4 Ghz for about an hour, still at 59-64C and hasnt crashed, so am hoping to at least get 4.4 working, thanks in advance If none of what i said makes sense, the video is all my setting, plus c3 and c6 are turned off and i went higher on the voltage by one down, still didnt work.

 

[Suzuki@1473780084@1473780163]

If you bluescreen then voltage is too low, you shouldn't jump from 4 to 4.4 just like that, better to take it slow. You can always increase base clock but is really not recommended as it affects other components as well.

 

[i7Baby]

Have a look at guides eg http://www.techreaction.net/2011/01/04/3-step-overclocking-guide-%E2%80%93-sandy-bridge-v0-1beta/

and http://www.overclock.net/t/910467/the-ultimate-sandy-bridge-oc-guide-p67a-ud7-performance-review

And I agree - steps of 0.1GHz. Not 0.4.

A Hyper 212 evo is not really suitable for getting much of an overclock out an i7.

These guys got 4.6GHz with your mobo - http://www.anandtech.com/show/4080/welcome-to-sandy-bridge-with-the-asrock-p67-extreme4/5

But they also used a pretty crappy cooler - http://www.akasa.com.tw/update.php?tpl=product/cpu.product.tpl&no=181&type=CPU%20coolers&type_sub=Retail%20cooler&model=AK-967

 

[Christopher Mannion]

Have a look at guides eg http://www.techreaction.net/2011/01/04/3-step-overclocking-guide-%E2%80%93-sandy-bridge-v0-1beta/

and http://www.overclock.net/t/910467/the-ultimate-sandy-bridge-oc-guide-p67a-ud7-performance-review

And I agree - steps of 0.1GHz. Not 0.4.

A Hyper 212 evo is not really suitable for getting much of an overclock out an i7.

These guys got 4.6GHz with your mobo - http://www.anandtech.com/show/4080/welcome-to-sandy-bridge-with-the-asrock-p67-extreme4/5

But they also used a pretty crappy cooler - http://www.akasa.com.tw/update.php?tpl=product/cpu.product.tpl&no=181&type=CPU%20coolers&type_sub=Retail%20cooler&model=AK-967

Ok, so i looked up and found that 4.4 ghz would require a bit more voltage, so i put the offset to +.030V, and i have been running prime 95 for about 45 minutes to an hour without any crashes. The highest temp thats recorded on CPUID is 77 C, though it is mostly around 64-68 C, it will randomly rise into the 70s, but also goes back down to around 64-68 C, does this sound like safe operating voltage and Temperatures? The voltage on CPU-Z is fluctuating between 1.328-1.344. Thanks again for your response

 

[Suzuki@1473780084@1473780163]

Yes those are safe temperatures. Prime 95 will 'torture' your CPU to it's limit resulting in much higher temperatures than you normally would on 100% load, eg rendering.

 

[i7Baby]

Sounds good.

 

[nikoli707]

are you using prime95 versions 26.6?

you should test with out touching any voltages to start. most sandy bridge chips will do at least 4.3ghz while touching nothing.

 

[Christopher Mannion]

are you using prime95 versions 26.6?

you should test with out touching any voltages to start. most sandy bridge chips will do at least 4.3ghz while touching nothing.

Im using version prime95 28.5, and it worked with no voltage increase with 4 ghz, but from there i had to increase the voltage since it was blue screening. Im at 4.4 ghz with offset +.030 now and i havent had any problems so far, is that fine? Vcore on cpuz show the voltage going up to about 1.354 i think.

 

[nikoli707]

28.5 will give you unrealistic temps, use 26.6, your temps will fall about 3-4c. 1.35v@4.4ghz is fine and within range. but you shouldn't go much further on your vcore even if your below 80c.

go over computronix temperature and stability guide.
http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html