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Lapping Question

post #1 of 17
Thread Starter 
Ok I lapped my operton. When I reinstalled it I went from 31-32c in bios to 25-26c my asus probe shows 29-30c down from 34-35. That is a significant gain in temp drops. Will it drop more as the as5 cures or just hold there?? That is on an oc of 2.9 @ 1.4 v.
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post #2 of 17
it might drop another 2 - 3c

did you lap your freezer 64 pro too?
    
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post #3 of 17
Thread Starter 
yeh but there wasn't much of a difference on it. it was pretty flat. I did them on a small slab of marble.
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post #4 of 17
It may, it may not... Have you lapped the AC 64 yet? That should give you another few c for sure.
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post #5 of 17
I'll second the 2-3 and maybe add another 2 to make it 5.

I recommend that you lap the HSF footprint also.

The cure time for AS5 on lapped surfaces can take up to 200 hrs as opposed to the 95 or so on regular surfaces.

P.S. What grit did you take the Proc too?
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post #6 of 17
Thread Starter 
1000 grit....I'm running orthos now for 30 minutes no errors yet..leveled off @46c...I did my freezer 64 too but may hit them another time in a couple days. Just to make sure they are "just" right. I'm at 2.93 with 1.475v
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post #7 of 17
Nice

Bear in mind that the smoother the surfaces, the better the thermal transfer between them will be. If you have the patience and can get 1200, 1500 and 2500 you could take it to a mirror polish:

and

Although I did not do it, you could then use some brass polish on it. If you do, make sure that you clean the surace very thoroughly with a xylene-based cleaner. A high-percent rubbing alcohol will do. You will know when it is clean as the cloth (white T-shirt works well) will no longer remove any more polish residue. No offense if this is already known to you...

Not trying to be picky, just thorough. I regret not thinking about or having read about the polish thing prior to re-seating.....next time.
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post #8 of 17
Thread Starter 
Hey no problem or offense...ALL input on overclock.net is welcome!! And yes I will be going further with the lapping I just wanted to check for any noticeable improvement. And yes it was an improvement. I ran sp2004 over night and didn't get an error until this morning but I started doing a couple other things at the same time...is that common??
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post #9 of 17
I lapped my Freezer before installation last March and used AS5 with it. My idle ( surfing) temp was mostly 36C. Two weeks ago, I decided to reapply AS5, this time I just put a tiny amount on the top of my CPU. My idle is now at 29C..... apparantly the amount of TIM you use is critical.
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post #10 of 17
Thread Starter 
Well I would agree there...I use a razor and spread a small even amount across the surface of my cpu and then install the hsf.

~~edit~~ does the removal of the coating over the copper on the cpu play a role in the temp drop??
And would removal of more of the copper to make it thinner perhaps get better temps?? And one last thing where is the thread on removing the IHS..I might even go that route....maybe..
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