Just got my Heat-killer 3.0.....

lap it anyway before you install it, may as well

What Tator said. If it's flat, leave it alone as those machining marks are usually nothing to lose sleep over.

Don't lap it. I believe someone around these forums lapped their HK and actually saw an increase in temps due to the lapping job.

nice, mine is on its way cannot wait! Going to be my first loop!

I don't know if lapping it will be worth it - the difference is marginal at at most probably 1C due to the convex shape of the i7 IHS. If it's not satisfactory (i.e. 5C from where it should be), and there's nothing else wrong with your loop, I would then look into maybe lapping it or getting a new replacement block.

DO NOT LAP, the HK 3.0 was designed with a curvature on the bottom to ensure proper spreading of the thermal material. If you lap it you will most likely see an increase in temps.

Also, if you are super hardcore, and really like lapping...lap the razor blade so "You can lap while you lap dawg!"

The HK3.0 has a purposely engineered, built-in bow to increase pressure on the die. Lapping a pre-bowed block like the HK3.0 is a BAD, BAD idea.

lapp the hk ONLY if you are going to lapp the cpu

thanks for the input guys- My cpu is already lapped fyi. I will check the heatkiller with a blade and post a picture. I have to swap out computers this morning so I can still get on the internet and then drink some coffee, then I will get started.

DO NOT LAP IT! HK is designed how it is for a reason.

HES tried lapping his HK, and there was no gain whatsoever

http://www.realredraider.com/vbullet...ead.php?t=6338