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Can anyone teach me how to overclock the i5 2500k to 4GHz on stock cooler?

post #1 of 13
6/22/11 at 7:19pm
Thread Starter 
If you have done it before, please tell me exactly what you raised the volts to, etc



My specs are on my signature and I am new to overclocking. I hope I didn't buy this CPU for nothing!

Thank you!
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post #2 of 13
6/22/11 at 7:33pm
Hey,

I personally used this guide to overclock my i5 2500k to 4.5 ghz (although I don't have the stock cooler). First you should run Prime95 and RealTemp to see what are your temperatures when cpu is on full load. Normally if you are under 60 you should easily overclock to 4ghz. I was actually able to overclock to 4 ghz by lowering the voltage from what was previously used with the "auto" setting.

Good luck with your overclocking

Edit : I used 1.13 V to overclock to 4 ghz and 1.26 V to 4.5 ghz.
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post #3 of 13
6/22/11 at 7:33pm
All chips are different. Just set a 40x multiplier on all cores and try leaving it on auto voltage. If it's more than 1.3v on auto, I would manually back down and try around 1.2v or even lower depending on how well your chip overclocks. Run prime95 to test for stability.
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post #4 of 13
6/22/11 at 7:39pm
Thread Starter 
Thanks for the responses guys, I opened up Realtemp and here are my temperatures:

http://gyazo.com/6c36c42c2bc22b14712f90b1651123b3.png

I am going to achieve atleast 4GHz, maybe 4.2GHz if I am lucky using stock cooler, do you guys think its possible with the stock cooler and the temperatures I have now?

Thanks again.
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post #5 of 13
6/22/11 at 7:48pm
Those are good idle temps but you need to run Prime95 at the same time to get the cpu temps on full load. Those are the ones that are important for overclocking.
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post #6 of 13
6/22/11 at 7:55pm
Thread Starter 
Quote:
Originally Posted by Zalder View Post
Those are good idle temps but you need to run Prime95 at the same time to get the cpu temps on full load. Those are the ones that are important for overclocking.
http://gyazo.com/c92ff9f0dfd560b524deff9c064d980e.png

I got this from running prime95 for about 2~3 minutes.

It reached 60 degrees quick, does it mean Im going to need to buy a quality CPU cooler in order to overclock?Can I atleast get 4GHz?
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post #7 of 13
6/22/11 at 9:19pm
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At this point, it's going to come down to what temps you are comfortable running while at load. Everyone has their set point temp they don't want to go above. The CPU will throttle down at 95C in order to prevent immediate damage to the CPU. This isn't to say slightly lower than 95C is ok to run at for extended periods of time. The problem is that the higher temp your running your cpu, the greater the chance of degradation. Personally, I won't run a cpu at full load higher than 75C unless I have enough cash to go out and replace it at will. With this in mind, if I were you I wouldn't bother overclocking that until you get yourself a $50.00 decent heatsink/fan. Just my opinion.
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post #8 of 13
6/22/11 at 9:23pm
I can safely say that it would be a bad idea, 2-3 minutes means nothing when you should be testing for like 8 or more hours.
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post #9 of 13
6/22/11 at 9:29pm
move the mulplier to 40x and the voltage should be around 1.165 to 1.25 depending on your case and conditon. you might need more. keep temps at 72c and under. 65-70 if possible.
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post #10 of 13
6/23/11 at 12:05pm
Quote:
Originally Posted by Valcore View Post
If you have done it before, please tell me exactly what you raised the volts to, etc



My specs are on my signature and I am new to overclocking. I hope I didn't buy this CPU for nothing!

Thank you!
If you are using stock cooler, keep an eye on temps. I wouldnt let any thing get over 80C.
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