oh i've got arcticlean as well lol, hmm this is my first time lapping. But can I use arcticlean on the bottom side of the cpu as well? - like if stuff from the sanding process gets in there.

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^?
thx

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C2D E6400(L626A)@3.2ghz/Tuniq Tower 120+AS5|G.Skill HZ 2GB DDRII@800(4-4-4-4)|ASUS P5B DLX (1004)| Seagate 320GB SATAII|Sony DRU-710A 16x DVD±RW(DL)[Modded FW]|Gainward 8800GTS 640MB(1.1ns)/stock|Creative SB X-Fi Xtreme Music/Logitech X-530 5.1|Antec PlusView II Perf.TX + SS 'Eudemon' FP52| SilverStone 'Strider' ST56F 560W|19" CMV-938D (5ms,WS)|Razer CH+EverGlide TITAN

Thanks for the guide Sli_Dog... I think I am going to lap my TRUE!

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My cpu when bought had a bent effect where it wasnt exsactly flat.
Maybe lapping it would help though is the cpu metal easy to lapp.
It really is like it is bubbled out in one corner.
I get 83c on 1.29v where as before my AS5 set is was like 60c?

The metal is nickle plated copper so yes it is fairly easy to lap.

Lapping the IHS voids any warranty though.

Not knowing which cpu and cooler you have makes it hard but something is not right with those temps, are you sure the cooler is seated properly?

Test the surface of the IHS and the base of the heatsink with a razorblade (or similar straight edge)

Lay the blade (on edge) across from corner to corner and look for light being visible between the blade and the IHS/heatsink.

Any chance you can post a pic showing the offending corner?