Guide to Lapping an Intel LGA 775 Processor

[some1ne]

My other reply got moved, but long story short the CPU magically resurrected itself after I installed a new RAM module and reseated the old one.

As far as temps go, my results seem to be not that great. It seems like at best, the lapped CPU is 1 to 2 degrees cooler at idle and load for a given ambient case temperature. This is despite the fact that my IHS was definitely warped (the difference is most apparent when applying thermal compound, as I use the "edge of a credit-card" technique, and it used to be nearly impossible to get an even coat, but now it spreads out perfectly with no extra effort being necessary). Also (and this could be just because I'm testing during warmer times of the day than usual), my ambient temperature appears to be 2 to 3 degrees higher now than it used to be (despite having 4 120mm case fans), so I've actually attained a net increase in temeratures.

Is there anything that might be done to improve things further? Lapping with > 600 grit, if I can ever find a place that sells it?

[Phnom_Penh]

Originally Posted by name='some1ne'

You mean moist with rubbing alcohol, right? If not, wouldn't water just make things worse, what with potentially leaving a conductive residue and all?

Doubt it. I've washed processors before when I've been core lapping and never had a problem...

[Thanh55]

The way you hold the CPUquite important I think, I very interested in this but would you please tell me how to hold the CPu properly orthe while it just damage it. Thanks much for your answer.

[Azreil_2]

Sorry for bring this thread back up but, this should still work with a Q6600? right :P

[pja123]

Is it really possible to get a 5 degree drop in temps from lapping? I really should have done this a long time . I'll definitely be following the guide - are all the lapping kits basically the same from the various resellers? Should i be looking for a specific kit?

[Jim]

Originally Posted by name='pja123'

Is it really possible to get a 5 degree drop in temps from lapping? I really should have done this a long time . I'll definitely be following the guide - are all the lapping kits basically the same from the various resellers? Should i be looking for a specific kit?

A few retailers do some decent lapping kits specifically for CPU's/Coolers. I bought one from KustomPCs not so long ago as it had a sheet of glass in with the pack. Very useful.

[pja123]

What sort of difference did that make do your temperature, was there a noticable drop? 5-10c degrees seems hard to believe to be honest.

[Jim]

Originally Posted by name='pja123'

What sort of difference did that make do your temperature, was there a noticable drop? 5-10c degrees seems hard to believe to be honest.

I got about 3c as my IHS was fairly concave. If you want to see a massive drop in temps then invest in some of this. It'll make your IHS go off-colour, but it gives pretty amazing drops in temps for thermal paste.

[ken_shiro]

Does it really matter what TIM is used on a lapped CPU and heatsink? Will

Coollaboratory Liquid Pro result in as much of a drop in temperature as in the test? Also how easy is it to clean CLP off the CPU?

[unikt]