Need help overclocking my i5 3570k.

Invrlose

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I need help OCing my 3570k, never OC'd before.


relevant specs:

750w PSU
i5 3570k
H100 cooler
4 sticks of ram, 4gb each at 1866MHz
Mobo: Asus Sabertooth z77.
 

Invrlose

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Just to clarify

Im completely clueless. So tell me every setting in the BIOS I need to disable and enable, why I need to turn them off/on, and what settings I need to tweak, and why... Hopefully i can become self sufficient sooner or later.
 

Invrlose

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Im using a corsair h100 cooler
 

Invrlose

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as much as I can lol :p

Don't I have to play with DIMM timing, and other settings in BIOS before I play with clock speed?
 

devilofdeaths

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no you don't need to mess with that

the cpu voltage or VCore set it to 1.25

then set the cpu bus speed/multiplyer to X44
 

Invrlose

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Sounds good. And if I want to get more out of it then I just turn up the multiplier right? And lets say the highest I can go is 4.7, do i just keep turning down voltage to get the lowest possible voltage for that OC or just leave it
 

devilofdeaths

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yes the multiplyer and voltage is the key but no the more multiplyer the more the cpu will want more juice like X50 multiplyer you would want ~1.3 VCore
ProTip:NEVER I REPEAT NEVER GO OVER 1.35 ON THE VCORE
 

Invrlose

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Ok right now I set the turbo multiplier to 48(4.8GHz) I left the DIMMs alone and I set the voltage to auto. The voltage is at about 1.34v right now, should I turn it to like 1.25 and see if its stable?

How come I shouldn't go past 1.35? Sorry Im such a nooby.
 

devilofdeaths

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DON'T SET VOLTAGE TO AUTO
it overvolts your cpu yes set it to 1.25 the run Prime95 for 10-15 minutes to see if it's stable
 

Invrlose

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If I set the voltage manually will it still undervolt when my CPU is not being used fully? Also I'm told some program called AIDA64 or something (Still googling for it) is a better tool for testing stability. Right now my CPU is running at 69C with BF3 b2k (The most CPU-stressful xpac of the game)
 
TIPS FROM A TECH:
*There are few, if any, games that will benefit from overclocking this CPU (unless you have a high-end CROSSFIRE/SLI setup).

So before I comment on overclocking, let's be clear:
1) overclocking usually breaks the CPU low-power profile so you'll get more fan noise, even in Windows

2) overclocking too high on some CPU's can actually disable one of the cores (haven't checked this one, probably drop to THREE cores around 4.3 to 4.5GHz)

3) RAM can be accidentally overclocked as well when overclocking the CPU resulting in stability issues.

**CPU overclocking:
1. peruse your motherboard manual (note: some motherboards have AUTO configuration features that are easier than others. the following is a MANUAL approach)

2. Change the BASECLOCK and CPU MULTIPLIER to get the desired frequency (i.e. 200MHz x 21 = 4.2GHz)

3. Verify RAM is still the proper frequency. If needed, adjust the RAM MULTIPLIER so it's correct again (i.e. 200MHz x 8 = 1600MHz)

4. SAVE, REBOOT and run MEMTEST ( www.memtest.org )

SUMMARY:
- overclocking provides no benefit to most or all games with this CPU
- will increase fan noise slightly (even on H100) in idle
- overclocking too high can actually disable one of the cores (not sure of details for this CPU)

*My advice is keep the stock settings which work great and keep your system cooler. If you have need of overclocking (converting video?) consider just doing it temporarily.

I've tested the benefits of overclocking extensively on many, many games with an i7-860 and GTX680 @1300MHz. I found just a few games that worked better but with your CPU there would be no advantage.
 

devilofdeaths

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69C is pretty good because ivy bridge is usually 20C hotter than sandy bridge but Prime95 is a proven system i don't even know what AIDA64 is