Intel Core Ultra 9 285K Can Draw Up to 370 Watts of Power, Cinebench Tests Show

GN covers this a bit. When he does cooler testing he has that laser imaging machine that shows the flatness of cooler bases and CPU IHS's. They tend to show the IHS to be concave.

I wonder if it would be beneficial to lap the IHS and water block base. I did that on my old Q6600 back in the day and saw a good drop in temps.
 
Riccochet said:
GN covers this a bit. When he does cooler testing he has that laser imaging machine that shows the flatness of cooler bases and CPU IHS's. They tend to show the IHS to be concave.

I wonder if it would be beneficial to lap the IHS and water block base. I did that on my old Q6600 back in the day and saw a good drop in temps.
Click to expand...
LGA1700 CPUs were 'bent' by the socket retention mechanism, and alternate mechanisms were produced that would alleviate the issue.

But that's just one case; in other cases, lapping can definitely help, albeit by voiding the warranty.

There's also the problem of the 'hot spots' on CPUs moving around and the use of brackets to offset coolers to account for this. We see this both now with Zen 4/5 and LGA1851.

For another example, Noctua has three versions of their NH-D15 G2 for different CPUs / mounts!

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