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CPU Lapping

ussie

ussie

ussie

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Joined
23 Jan 2013
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404
Location
Derby
Anyone here done this to any of their cpu's?

If yes could you kindly share your experience regarding temps etc

Im considering doing it to mine soon (fx 8350) I've a friend who took off up to 10C on his kraken x60 (same cooler as mine) but he did lapping on the kraken x60 and cpu.

Personally I know it voids warranty, I don't need warranty on CPU as arrogant it may sound as I'll look after it and not go crazy overclocks killing it whereas the kraken x60 I do care about so I probably wont lap it.
 
I done it on a q6600 a few years ago. Before lapping, the chip was hitting 81c max at 3.8ghz under p95. After lapping the max temp dropped to 68c, cooler was lapped as well. I started with 400 grade wet and dry, progressively moving through different grades, finished of with 2000 grade for a nice shine. Though a shiny finish isnt neccesary, main thing is to get the surfsces flat.
 
Did it to my 3770 after delidding, the spread of temps between cores were much closer but this could have been down to the delid process.

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So to lap you just sand it until you reach the copper then get as close to mirror finish as possible? Does lapping lose you your warranty?
 
bicpug said:
So to lap you just sand it until you reach the copper then get as close to mirror finish as possible? Does lapping lose you your warranty?
Click to expand...

Lapping you sand the cpu with different sand papers, typically I believe they are
220
400
800
1000 (anymore above this is just an 'extra' the main process has already been done) (more after this point makes a nice mirror shine!)

These numbers I believe is how much grit and how thick the grit is.

So a 220 would be very course and used at the begining to get the nickel finish off the cpu so you can eventually see the copper, in which you'd then move onto 400 etc and 800/1000 to finish off.

The finer it gets the smoother/shinier your cpu will be. I'm no pro at this, I have not done this before but im considering it very soon so i've done abit of research.

It DOES void warranty
 
You loose the warranty yes, a mirror finish is more for looks than anything tbh. Getting it flat is the main bit.
 
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