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2600K Overclock Help

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July 27, 2011 2:57:59 AM

Hi all,

I have recently finished building my new rig with a 2600K on a Gigabyte P67-UD4 board and am attempting my first real OC. I followed the sticky guide which was good (thanks to the author).

On all auto voltage settings I have a Prime95 stable OC of 4.4ghz. When I tried 4.5 I was able to use Windows fine but when I stress-tested the system I got a BSOD. My BLCK is 100mhz.

At 4.4 on auto voltage HWMonitor read out a max Vcore of 1.26 with a max temp after a while of 75 degrees.

My ultimate goal is 4.8ghz. Is my next logical step to achieve that to up the voltage from 1.26 then up the multiplier?

Thanks

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July 27, 2011 3:18:17 AM

That is what I would do, but since I haven't done any OCing on Sandy Bridge I couldn't say for sure. Your other option would be to adjust the BCLK, but that won't really help you on the voltage front, as you'll simply have to up that to get stable above 4.4GHZ. I hear that the BCLK can only be tweaked about 6-7% in most cases anyway.

What cooling are you using, as an aside?
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July 27, 2011 3:23:03 AM

cuecuemore said:
That is what I would do, but since I haven't done any OCing on Sandy Bridge I couldn't say for sure. Your other option would be to adjust the BCLK, but that won't really help you on the voltage front, as you;ll simply have to up that to get stable above 4.4GHZ. I hear that the BCLK can only be tweaked about 6-7% in most cases anyway.

What cooling are you using, as an aside?


I'm using an Antec Kuhler 920.

I've heard rumors that changing your BCLK is not recommended as PCI devices require 100mhz power supply. You think it is ok to change then?
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July 27, 2011 3:27:31 AM

I wouldn't; I've simply heard that others have tried it.
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July 27, 2011 3:43:21 AM

cuecuemore said:
I wouldn't; I've simply heard that others have tried it.


Yeah that's my opinion too. Would prefer to up the multiplier before anything else.
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Best solution

July 27, 2011 5:54:14 AM

Your load temps are kind of high for that oc and voltage,for a stable oc of 4.7 to 4.8 majority of the chips need 1.35 to 1.40v mines at 4.7 with 1.38v idle temps 24 to 26 load max 60 to 62 using a silver arrow
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July 27, 2011 5:55:19 AM

Leave the black alone
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July 27, 2011 6:33:47 AM

deletedcod said:
Your load temps are kind of high for that oc and voltage,for a stable oc of 4.7 to 4.8 majority of the chips need 1.35 to 1.40v mines at 4.7 with 1.38v idle temps 24 to 26 load max 60 to 62 using a silver arrow


Yeah my temps were a bit high; mind you the PC is without ambient air-con. I would say that ambient temps would be around 24 degrees celsius though. You'd think given my cooler that the temps would be lower. I do have a DEMCiflex front filter on the Corsair 650d case though; that may be restricting air.

For you to get 4.7 at 1.38v did you just alter the vcore voltage only? And, what is your ambient temp?
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August 5, 2011 1:12:55 AM

Best answer selected by rainwilds.
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