Overclocking I5 3570K

Snodge

Snodge

Snodge

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14 Apr 2012
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Just installed my new chip, got a A50 cooler, cooling it what sort of overclock should I get out of it and how should I go about it, 4GHZ would satisfy me :D Just to be able to say 4GHZ as i'm not gonna get it to 5 XD

Help please :)
 
If all you want to do is get to 4 then all you gotta do is change the cpu multiplier from 34x to 40x (as each x raises the clock speed by 100, as the base clock will be set to 100 by default). Basically don't bother touching the base clock as that is more complicated and does not work nearly as well.

4 GHz is a very achievable overclock and shouldn't require any cpu voltage change in theory.

If you do have to change the voltage, and in general with voltage for ivy bridge, keep it below 1.2V or at total max 1.25V, you can go higher than this without breaking specification but below 1.2V should always keep you within sensible temperatures.

The full load temperature you should aim to keep below is 75 degrees C, but 80 is still acceptable.

And finally the most you should expect to get out of your chip is about 4.4 GHz before you have to start raising voltage a bit and getting into high temperatures, and 4.6 GHz seems to be about the max people can get while staying below unsafe temps (although I believe that is with water cooling).

Hope this helps, and enjoy :)
 
Snodge said:
Oh ok I did try that OC Genie but it made boots very unreliable.

so I put multiplier to 42 and Voltage to 1.2, ran Prime95 for about 20 minutes temps didn't go over 71. However when I was running prime the voltage was only at 1.176 seems rather stable though.

Core Temp - http://i1216.photobucket.com/albums/dd365/jsastra/Coretemp.png

Prime95 - http://i1216.photobucket.com/albums/dd365/jsastra/Prime95.png

CPU-Z - http://i1216.photobucket.com/albums/dd365/jsastra/CPU-Z.png
Click to expand...

Change LLC to 50% or 75% to get a constant 1.2v on load. Then try 43/44 multi to see if they're both stable. For 45 multi which may be possible at 1.2v (was stable for me at 1.22 but I didn't try at 1.20). With a 45 multi or more you'll need to Enable internal PLL overvoltage to get it stable most likely.

When you reach the point of instability turn off all powerr saving stuff (EPU/c-states) except C1E and speedstep and see if that stabilizes it. There's other things you can do but all of that will get 44/45 easy I imagine but if you want higher you'll need to up the voltage which causes more heat. All depends what temps you're happy with as you'll hit temp limits long before too much voltage becomes an issue.

One last thing, I personally found that BF3 on max settings 64 player was the best stability test I could do and a 1 hour prime stable OC would bsod in BF3 within a 1000 ticket round if it was unstable. Same for memory as well actually that passed memtest86+ and superpi 32m would bsod in BF3 lol
 
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