How flat isn't your cooler ?

[Sputnik]

I had an old used Arctic Cooling freezer 64 laying around so thought I'd see how flat it was (or wasn't). After a couple of drags over some 400 grit on a glass plate.......

[Pob255]

I seem to remember my acf7p being pritty good, my thermalright ultima90 was pritty curvey
Seems a lot of the thermalright coolers come curved.

[NoPrisoners]

Yeah my thermalright ultra 120 extreme wasn't anything close to flat, had to lap it.