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Lapped vs. Un-lapped CPU

post #1 of 22
Thread Starter 
What does lapping mean? What does it do?
post #2 of 22
It's the process of sanding your IHS (Integrated Heat Spreader) or HSF (Heatsink Fan) to a mirror finish. It's objective is to make the IHS/HSF as flat and smooth as possible for MAXIMUM contact between the IHS and Heatsink. It can drop your CPU temps anywhere from 2-5C, sometimes more!
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post #3 of 22
make something flat,

like make your cpu flat with high grit sandpaper.
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post #4 of 22
I do not kno about smooth but I know that you have to make it flat.I do not think that if it doesn't become a mirror it will not be as good as if it would have. I mean scratchy or not its the same as long as its flat. The problem is that CPU IHS is NOT flat. Some CPU have the center deeper and the newest are opposite since th center is raised a bit. THe flatness on both IHS and heatsink will indeed give better performance but make sure to not much as much thermal paste since the primary job of the thermal paste is to fill up the gap between the IHS and the heatsink which lapping has removed.I never make them mirror like and both mine and my friends who I did it dropped 4-5C. Mine actually 5 but i bet it will drop more if I reseat the heatsink and add less thermal paste.
    
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post #5 of 22
Sand base with 600.
Sand base with 800.
Sand base with 1000.
Sand base with 1200.
Sand base with 1500.
Sand base with 2000.
Sand base with 2500.

Mine:




My little brother did the sign.
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post #6 of 22
Lol. The thinnest I use is your thicker. Yeap I only lap with 600. Too bored to look around for the 2500 or something.
    
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post #7 of 22
Quote:
Originally Posted by weltall View Post
Lol. The thinnest I use is your thicker. Yeap I only lap with 600. Too bored to look around for the 2500 or something.
1500 grit at walmart. In the auto section, near touch-up paint.
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post #8 of 22
Quote:
Originally Posted by KSIMP88 View Post
1500 grit at walmart. In the auto section, near touch-up paint.
ooo thats why I could not find any when I asked for bronze.. now it figues. Thanks for the info!
    
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post #9 of 22
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post #10 of 22
Thread Starter 
Quote:
Originally Posted by The Pook View Post
Sand base with 600.
Sand base with 800.
Sand base with 1000.
Sand base with 1200.
Sand base with 1500.
Sand base with 2000.
Sand base with 2500.
are these the different types of sand paper?
which is the best to use?
i plan on getting a brand new q6600 quad core, is this lapping thing good with any CPU? is it good to lap even though the product may be brand new?
how long should u sand for to get the best results?
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