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Changing heatsink on OC CPU

Last response: in Overclocking
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January 17, 2013 7:33:33 PM

I currently have a stable 4.4 OC on my 3570k at ~1.24V. I'm on a 212 Evo and after 9 hours of stress testing temps are in low 80's. I ordered a Noctua NH-D14 and going to switch it out as soon as I receive it.

My question is, should I clear my CMOS/load default in BIOS when removing the chip? Or can I just remove the chip, install the new heatsink and boot up with my current settings?

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a c 219 à CPUs
a c 133 K Overclocking
January 17, 2013 7:42:28 PM

You won't even need to remove the chip itslef. But no, you can keep your CMOS anyway. No need to reset. One more thing, don't be scared to hit 90C with Ivy, they are ok with running hot.
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January 17, 2013 7:48:15 PM

I hit 90's before trying to get to 4.5 and was not to worried, but failed P95. Of course I was way below VMax (about 1.28) but I knew any higher I would get into the 95 range. Thats why I'm banking on my Noctua to let me get at least 4.7~4.8 stable. Because let's face it, the 212 EVO is good -- but with IB's temps and VCore jumps each clock above 4.3~4.4, the 212 just does not cut it. Plus, it was my first heatsink installation so I don't think I seated it right =X
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a c 219 à CPUs
a c 133 K Overclocking
January 17, 2013 7:57:52 PM

mookial said:
I hit 90's before trying to get to 4.5 and was not to worried, but failed P95. Of course I was way below VMax (about 1.28) but I knew any higher I would get into the 95 range. Thats why I'm banking on my Noctua to let me get at least 4.7~4.8 stable. Because let's face it, the 212 EVO is good -- but with IB's temps and VCore jumps each clock above 4.3~4.4, the 212 just does not cut it. Plus, it was my first heatsink installation so I don't think I seated it right =X


Yeah that is possible, or you just have a hotter chip. Just use the pea method to apply themalpaste.

http://www.youtube.com/watch?v=EyXLu1Ms-q4

At 1.28v you should be able to hit 4.6GHz.


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January 17, 2013 8:19:56 PM

Yea I think my chip is not the best, 1.28 was crashing P95. I'll see what I can do after I install the new heatsink :) 
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a c 219 à CPUs
a c 133 K Overclocking
January 17, 2013 8:35:12 PM

mookial said:
Yea I think my chip is not the best, 1.28 was crashing P95. I'll see what I can do after I install the new heatsink :) 


What did you set the LLC to?
You are using fixed votage ofcourse?
You disabled all turbo and power saving features?
You are only increasing core multiplier and not bus speed right?
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January 17, 2013 10:28:13 PM

Novuake said:
What did you set the LLC to?
You are using fixed votage ofcourse?
You disabled all turbo and power saving features?
You are only increasing core multiplier and not bus speed right?


First off, specs:
i3570K
ASRock Extreme 4
Noctua NH-D14
16 GB Ripjaws X 1600 MHz

Offset @ +0.005
Turbo is on with offset at +0.008 (These settings are what I'm stable with at 4.4)
Yes, only increasing core multiplier by all cores and leaving bus speed at 100.
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a c 219 à CPUs
a c 133 K Overclocking
January 17, 2013 10:40:45 PM

Ok forget offset at first, set to fixed. Find your max OC first, then start offsetting from there
Disable Turbo.


Now attempt your OC again.
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January 17, 2013 10:43:45 PM

Why disable turbo? Does it cause issues with OC? Also how would I find max OC with Fixed? What VCore would I start at?
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a c 219 à CPUs
a c 133 K Overclocking
January 17, 2013 10:59:48 PM

mookial said:
Why disable turbo? Does it cause issues with OC? Also how would I find max OC with Fixed? What VCore would I start at?


Yes Turbo interferes with the OC, turbo basically regulates voltage and clock rate base on temperature and load. So effectively it will keep downing your set voltage.

Start at a fixed 1.2v(stock, you should hit 4.2GHz with that voltage.

Go from there. Increase multiplier till you lose stability, then add 0.2v and push multiplier again. Keep testing between ups in voltage AND multiplier with prime95 for at least a half hour to confirm stability.
Continue process until you reach your desired OC or unacceptable temps.

Run prime95 for 6 hours, check max temps, if still acceptable, run Intel Burn Test. Don't worry if temps are higher in Intel Burn Test, it is not in any way real world(just don't exceed 103C)
If all is stable after all that, VIOLA you have your OC.

I usually don't even bother with offset.

EDIT : Oh and set your LLC (load line calibration) to level 2, if ind that the best on my Extreme4.
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