Geeeeez, just read this. Can anyone confirm. I'm not sanding $#%hit.
Heatsink and/or CPU heatspreader not flat!
If your heatsink and/or cpu heatspreader is not flat, you will see high temperatures and a large gap between load and idle temperatures on your CPU core. How do I fix this?
Take heatsink off, take CPU out if lapping the heat spreader.
Find a perfectly flat block, or surface.
Get some sandpaper, from 400-1000 grit (you can find these high grit count sandpapers at autoparts stores)
Place the sand paper on the flat surface, hold the heatsink or CPU surface on the sand paper, and rub it. Make sure it is flat. Your goal is to get them perfectly flat.
Start sanding with the lower grit, like the 400. Remember, your goal is to get it perfectly flat, so make sure you are not tilting anything, and make sure the sand paper is perfectly flat against the surface, or against your perfectly flat sanding block (none that I know of unless you take something that is glass and really flat or like a thing of polished granite. You can sand in any direction, it does not matter as long as it is flat, if it is diagonal, horizontal, vertical, or circular. If I do something that is not circular I do it in the opposite direction, like vertical after going horizontal so the small scratches are not all the same direction, and thus it could be smoother and more flat.
Look so see after a few seconds if the scratch marks from the sandpaper cover all of the surface, just the middle, or just the outsides. When it does not cover a certain area...that means it is not flat. Keep going until it is flat, then move up gradually to the 1000 grit.
Clean off CPU and bottom of heatsink with 91 percent Isopropyl Alchohol
Apply some silver sompound to the heatsink, rub it in and then off,this is rumored to fill the microscopic cracks and stuff in the heatsink.
Apply a thin layer to the CPU core or heat spreader, make it even but thin as possible..not too thin..but thin.
Make sure you don't get any dirt or anything in!
Carefully put the heatsink back on
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