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Discussion Starter · #1 ·
So I've decided lap my CPU and perhaps the H60 as well.

I sourced the sandpaper from a different place this time, I was still unable to find anything higher than 1000 grit. So I have settled with the following:

150-320-400-1000 grit, lowest to highest. As I said I'm about to start, so pictures and results will follow. For now I will leave you with my un-lapped idle and load temps.

For reference, the ambient temp is 16c in my room (winter here, duh)

Idle:

unlapped-temps-idle.png


Load:

unlapped-temps-load.png


This is overclocked at 4GHz (200x20) with NB at 2.8GHz/1.275v and HT at 2.4Ghz/stock volts.

And here we begin. You can see the marks on the H60, it's not TIM as I've cleaned it with arcticlean prior:

h60-marks.png


The culprit:

cpu-unlapped.png


Starting with the 150 grit:

cpu-150.png


After exposing the copper:

cpu-150-2.png


320 grit:

cpu-320.png


400 grit:

cpu-400.png


1000 grit:

cpu-1k.png


Finished product:

cpu-lapped.png


All back together:

finished.png


Check out the sandpaper:

sandpaper.png


Most of that fine dust is copper from the CPU.

My well deserved treat to myself after all the strenuous work
tongue.gif


dinner.png


As for temperature improvements, I will be busy curing the paste the next two days, but I have already seen a 1c drop to 24c at idle, with fresh paste. Haven't done any load tests yet, but the ambient is still 16c.
 

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Discussion Starter · #3 ·
I've just finished the process, applied new paste and booted up. Didn't lap the H60 as it looks fairly reflective already, much like the CPU looks now. Editing pics and uploading soon.
 

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Looks like finger topping pizza.
 

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Discussion Starter · #7 ·
It's just Domino's, nothing special. But yeah I'm going to be curing this paste for the next day or two, so load and idle temps will be calculated then
smile.gif
 

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Discussion Starter · #11 ·
The watercooling folks don't take kindly to these all in one units and the guys in the air cooling forum are like "lol gtho wrong section" so I guess I put it here


It really sucks that I can't find 200grit or higher in this stupid town
 

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Discussion Starter · #13 ·
I will in the future, but it's difficult to hold flat with those tubes and the rad flapping about. It's hard enough to mount the block once the rad is installed
 

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Quote:
Originally Posted by linkin93;14115655
I will in the future, but it's difficult to hold flat with those tubes and the rad flapping about. It's hard enough to mount the block once the rad is installed
I lapped my h70, just picked the rad up and move it along with the block.
 

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Quote:
Originally Posted by linkin93;14108912
So I've decided lap my CPU and perhaps the H60 as well.
Hah, take out that IHS and lap the die if it's not flat !!
I know you will eventually do it if you are crazy about temperature.
 
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