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Need Help with overclocking On ASUS Sabertooth P67 with i5 2500K

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December 19, 2011 9:56:47 PM

OK, so I would like help on overclocking a Intel Core i5 2500K cooled by a Corsair A70 all on a ASUS Sabertooth P67 motherboard. I want to overclock the 2500K to about 4.0-4.3Ghz, so I would like to know what i should set the voltages to for maximum lifespan and stability. I haven't overclocked a CPU before so any help is greatly appreciated.

The Rig,
Intel Core i5 2500K
Corsair A70 CPU Cooler
ASUS Sabertooth P67
GSKILL Sniper 8GB DDR3 1866Mhz Memory Kit
Sapphire HD6970 Dual Fan
Fractal Design Define R3 with extra Cooler Master Sickleflow Green LED 120mm fan in the front
PC Power & Cooling Silencer MKII 950W PSU
Corsair Force GT 240GB SSD
ASUS Xonar Essence STX Sound Card
1 Blu-ray burner and 1 DVD Burner

Thanks!

Best solution

a b K Overclocking
December 20, 2011 12:57:00 AM

Just 3 weeks ago, I was first-time builder and I did the following to overclock my i5-2500k to 4.5Ghz @ 1.31V:

Download CPU-Z (monitor speed and voltage), RealTemp (monitor core temps) and Prime95 (CPU stress test):

http://www.techpowerup.com/realtemp/
http://www.cpuid.com/softwares/cpu-z.html
http://www.mersenne.org/freesoft/

Visit this page:

http://www.overclock.net/t/1042186/asus-z68-series-info...

Scroll down to the post by "SimpleTech" and follow those exact instructions but replace the Turbo Ratio with 43 and initial CPU voltage at 1.31V.

After tweaking in BIOS open all 3 programs and start the Prime 95 blend test.

Leave that on for 1-2 hours (longer if you want) and watch the temperatures - I'd worry if it hit 75+C. Make sure you turn off sleep mode in Windows.

Then, you basically repeat the process but each time, you reduce the voltage by 0.1V without changing the Turbo Ratio. Once you get a BSOD (I got mine within 15 mins of not having enough voltage), you revert to the last CPU voltage that Prime 95 ran stable for 1-2 hours.

Then, you can run Prime 95 for a longer time (24 hours is not surprising) to confirm stability.
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December 20, 2011 3:16:39 PM

Best answer selected by TheComputerGeek_48.
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January 13, 2012 6:51:50 PM

WOW- Great thread. I just bought the 2600k and Asus Z68 so I can't wait to play with it.

I wish they had instant shipping!
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