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CPU OC - crashing?

Last response: in Overclocking
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March 31, 2012 3:38:47 AM

Alright so I went from 3.4GHz stock clock on my 2600K to 4.3GHz, changing only the multiplier and no volt change.
I got this problem though... when I turn on my computer sometimes, it runs for 10 seconds without displaying anything and then restarts by itself.
So I downclocked to 4.2GHz, but the same problem occurred (sometimes, not always).
I have now changed to 4.1GHz, assuming the problem is lack of voltage for that extra clock.

But what I need to know is that is this totally fine, (meaning that the CPU wasn't getting enough power at the start so the whole system restarts)?

More about : cpu crashing

March 31, 2012 5:02:13 PM

comon guys.. 63 views, no replies?!
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a b à CPUs
a b K Overclocking
March 31, 2012 6:52:06 PM

Yes your CPU is fine but it is not getting enough power to support that increase in clock speed, you need to down clock it til the problem stops and that will be your maximum overclock at stock voltage. To go beyond that mark you have to increase the voltage little by little. Do you have an aftermarket CPU Heatsink/Fan?
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March 31, 2012 7:08:26 PM

stickg1 said:
Yes your CPU is fine but it is not getting enough power to support that increase in clock speed, you need to down clock it til the problem stops and that will be your maximum overclock at stock voltage. To go beyond that mark you have to increase the voltage little by little. Do you have an aftermarket CPU Heatsink/Fan?


Ok, thanks for your advice. I am still quite concerned, since the OC tutorial on this site claims that you mostly start to see problems at 4.3GHz - 4.7GHz when you are at stock voltage. Now my clock is at 4.0GHz and I have not encountered this problem yet.

For the fan, I have the noctua nh-c14. I am planning on raising the voltages soon though to raise the clock to ~4.5GHz, I am just quite lost on what voltage to start with.

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a b à CPUs
a b K Overclocking
March 31, 2012 7:29:59 PM

What is your current CPU voltage? It should be around 1.3v. Start increasing it by .025. Or since you have adequate cooling I would recommend setting it at 1.375 and trying to boot at 4.5ghz. If you make it to windows then run Prime95 and monitor your temps. If the temps get higher than 65C then you might want to back it down some.
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March 31, 2012 7:46:52 PM

Yes, it's around 1.304v at 4.0GHz ~ 4.1GHz. When it was 4.2GHz ~ 4.3GHz it was 1.336v (it changed automatically I guess)

And by 65C, you mean after several hours?
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a b à CPUs
a b K Overclocking
March 31, 2012 8:12:17 PM

yeh but just for trying to get an OC just run it for a few minutes. After you find something your happy with run it for a few hours to see stability and max temps.
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April 10, 2012 6:53:27 PM

Best answer selected by Yozer34.
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