Quote Originally Posted by nealh View Post
Fwiw...I checked the IHS with a razor last night and looked "flat"...but if it is concave..will idle and load temps both skyrocket

I booted initally at old settings of 1.525v with powerslope on...immed after install and idle temp in bios was 47!!!! ....I enter bios and set cpu defaults...bios idle at 36 FWTW

At stock VID (1.250vcore) you should realize 5-9C with a lapped IHS. The real tell is when you start upping the vcore. With the stock IHS (if cupped) the temps will get out of hand quickly. I believe 36C at idle and stock vcore is very high no matter if you are on air or water.

Even with a true straight edge it is very difficult to tell if the IHS is flat. One of the best ways to check is take a dry erase marker and color the entire IHS.
Lay a piece of paper on a mirror or pane of glass and gently slide the cpu across the paper. If the center of the IHS appears untouched then the IHS is concave and needs to be lapped. Yes you will void the warranty but unless you decide to put ridiculous amounts of voltage thru the cpu for extended periods of time then I would not worry. These L629Fs should easily run 3.6-3.7GHz with not too much vcore and good cooling.