E6600 poor IHS contact - needs a lapping

[Soul Colossus]

My E6600 is idling at like 40-45C (according to my P5B's BIOS) at stock--and I have a Scythe Infinity. Shouldn't it be more like 30C?

Anyways, when I take the HSF off the bottom is like 1/3 covered in paste, so the contact is pretty crappy. It's probably the IHS being concave and like many others I'll be lapping it with sand paper, but what's the best grade for flatness? Should I use water?

 

[cmdrdredd]

P5B reports wrong...your temps seem fine

If you want to lap it anyway use this guide http://forum.overclock3d.net/showthread.php?t=4735

Go to the automotive store and find Imperial wetordry sandpaper made by 3M. I used no water at all when I lapped mine. I went from 600-800-1000-1500-2000 grit.

 

[Soul Colossus]

It may report inaccurately, but 2/3 of the heatspreader not making contact would affect temps nonetheless.

Thanks for the link.

 

[cmdrdredd]

Originally posted by: Soul Colossus
It may report inaccurately, but 2/3 of the heatspreader not making contact would affect temps nonetheless.

Thanks for the link.

actually it depends. If you use the grain of rice size dot on the CPU and smash the HSF on that there won't ever be an even coverage across the entire heatsink contact area.

 

[Soul Colossus]

Perhaps, but I'm going to go for it anyways.

Do I need to use as many different grits as the guy in that guide did? I only want to spend a few bucks on paper

 

[cmdrdredd]

Originally posted by: Soul Colossus
Perhaps, but I'm going to go for it anyways.

Do I need to use as many different grits as the guy in that guide did? I only want to spend a few bucks on paper

I would, or it won't be quite as smooth and actually would take longer.

 

[Pabster]

Originally posted by: Soul Colossus
Perhaps, but I'm going to go for it anyways.

Do I need to use as many different grits as the guy in that guide did? I only want to spend a few bucks on paper

Yes, unless you like wasting your time. You don't see people using several different grits just for the hell of it

 

[cmdrdredd]

The idea is for it progressively get smoother and smoother as you move up in the grit used.

 

[JEDIYoda]

DONOT start out using 100grit sandpaper

 

[OcHungry]

Originally posted by: JEDIYoda
DONOT start out using 100grit sandpaper

Or Chisel.