Overclocking Advice, i5-3570k

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John Bauer

John Bauer

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Jul 16, 2013
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First of all, SPECS

And second of all, I already have most CPU options disabled in my BIOS but the "throttle down while idle" option.

Second, I was a little worried about temps because I was hitting temps of about 70C while running Prime 95 @ stock.

But, I have my multiplier set to a small number, 40x100 so far, and set my Vcore to 1.080. CPU-Z shows a 1.032V.

I've had Prime 95 running for about 10 minutes now and my max temps are 60/62/60/60, so I guess i was overvolted at stock.

My question is, what should I expect to be able to run? About 4.2-4.4? And at what Vcore settings?
 
Solution
inzone
There are no settings that every one will have as the same since every CPU will overclock differently, some will go higher on a little voltage and some will not go as high on the same voltage. It's a step by step process that you take your time doing and you try to get to your target clock speed and be stable.
You CPU cooler and the temps will determine what you get for an overclock.
What I would do is start out by increasing the multiplier to 41 and going into Windows to verify it's stable and the temps are ok and then run Prime for 30 min or so and if the temps are ok and Windows is stable then go back to the bios and raise the multiplier to 42 and repeat the testing and make sure the temps are ok. If you blue screen or freeze then...
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inzone

inzone

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Mar 12, 2011
14,971
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51,960
There are no settings that every one will have as the same since every CPU will overclock differently, some will go higher on a little voltage and some will not go as high on the same voltage. It's a step by step process that you take your time doing and you try to get to your target clock speed and be stable.
You CPU cooler and the temps will determine what you get for an overclock.
What I would do is start out by increasing the multiplier to 41 and going into Windows to verify it's stable and the temps are ok and then run Prime for 30 min or so and if the temps are ok and Windows is stable then go back to the bios and raise the multiplier to 42 and repeat the testing and make sure the temps are ok. If you blue screen or freeze then you need a bit more voltage, enough to be stable. This whole process should be repeated until you reach your target clock speed and the temps are ok and Windows is stable. 4.4ghz or 4.5ghz is a very reachable clock speed and the temps with Prime95 want to be no higher that low 80c, high 70c would be better and the vcore under 1.38v.

Remember the temps that you get with Prime95 will be the high water mark for temps because it's a 100% stress and you won't get to those temps with any games or anything else except a 100% stress test.
 
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Solution
John Bauer

John Bauer

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Jul 16, 2013
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I ran that setup for a few more minutes, so I went back into my BIOS and increased from 40x100 to 42x100 and increased my voltage from 1.080 to 1.095.

I was unable to boot past the BIOS, so I switched from the main BIOS to the backup, so that's what I'm running on now. Was the Voltage too much of an increase or did I jump the gun a little? I obviously didn't fry anything, I'm still using it. But I'm unsure of what to do now. I think I'll boot F9 to system info and see what I can do from there.
 
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John Bauer

John Bauer

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Jul 16, 2013
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I managed to switch back to the main Bios after a BSoD. I went back to my original OC of 4.0 @ 1.080.

So, I'll bump it to 4.1 and raise voltage back to 1.095 again. Then I'll go from there.

Thanks
 
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John Bauer

John Bauer

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Jul 16, 2013
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Core #2 is getting an error in Prime 95.

"FATAL ERROR: RESULTING SUM WAS 9.26..... EXPECTED SUM WAS 9.44..... HARDWARE FAILURE DETECTED"

Does this mean Core #2 cannot run at a speed of 4.1 GHz at 1.1v?



Don't...

Bump posts


http://www.tomshardware.com/forum/283384-33-read-first
 
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inzone

inzone

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Mar 12, 2011
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Sometimes a voltage increase will solve the Prime error and since all processors are a bit different it may take a few voltage increases to get stable. You voltage at this point is way low and beneath any problem levels. The line you don't want to cross is 1.38v because while the CPU can certainly handle it any long term use above that level will start to cause damage to the CPU.
So give the voltage a few more hits and test.
 
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