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I want to reach 4.0ghz on my 920 with C0 stepping. What heat sink would allow me to reach 4.0ghz? I'm on a fairly tight budget so cheaper is better
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You must be extremely extremely lucky to hit 4.0Ghz on air with a C0. Your best change is the Thermalright silver arrow sb-e extreme but even it is probably not enough even if you disable HT to decrees heat.
Quote:
Originally Posted by Obsuniva View Post

What's the difference between c0 and d0? I have d0 and am running at 4.3 Ghz.
C0 is an older stepping and generally needs a good deal more vcore then a D0. Where a D0 can hit 4.0Ghz with something in the 1.25-1.40V range while the C0 usually sits in the 1.30-1.50V range or might not run at 4.0Ghz at all.
 

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I hit 4.0 on a C0 under a CoolerMaster v6gt, cant remember my temps but i'm sure they were comfortable(ish)
(ht disabled)
 

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Most of the big twin towers and single towers like Archon SB-E and True Spirit 140 are in same 3-4c range.

Getting 3.5-3.8GHz is pretty normal. 4.0GHz is silicone lottery land
 

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