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Is Lapping Worthwhile?

danza

danza

danza

Soldato
Joined
28 Mar 2005
Posts
13,679
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Drunken badger punching
I want to beast my Q6600, and temps are quite high in Intel Burn Test at up to ~74'C. That's at a VC of about 1.34V.

I have access to some seriously fine (0.3um) lapping film which is used to produce optically perfect finishes on glass and metal. I have lots of other grades too. Will I see much of a benefit doing this, or is it a waste of my time?
 
I had it running at 1.3625V stable at 366 x 9. Core temps were 77,77,70,70 at 100%. Idle was 37,34,30,36. I've since lapped it and reduced core temps by 4-5 degrees per core.

I'm now gunning for 377 x 9, and am currenty struggling a little with stability, but volts are at 1.40V and temps are 35,32,28,35 idle.

I'll post load temps in a bit if it doesn't fail the burn test this time...
 
Needing 1.425V for a stable 377 x 9. Tempted to leave it lower at 1.3625/366 x 9...
 
I did mine by hand on a granite chopping board. You'll never get it perfectly flat by hand, but unless you're totally ham-fisted, you should get it better if it is needed. I did my CPU cooler too, although it's a lot harder to polish it perfectly upright.

My AC Freezer 7 Pro/Q6600 temps dropped by 4 or 5 degrees after lapping when stress testing under IBT.
 
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