How to check flatness of CPUs and coolers - INK and OPTICAL INTERFERENCE methods

[ShrimpBrime]

Can you do the 245K and 285K also? I wonder if there's any discrepancies. These look the same as all the other ink tests. Flat enough to put a cooler on.

 

[A Computer Guy]

With everybody excited about the new Arrow lake CPUs I thought I should check, how flat they are and what do they do in the socket.

A new CPU out of the socket surprisingly is not flat, but it has a bulge in the middle.

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In socket, which is the new reduced load type, the CPU again bends significantly, in this case twists a bit too.

View attachment 368905View attachment 368906

I expected a little bit more from the new type of ILM.

When I see this I wonder if I can take my old CPU's do the same thing then capture it in a clear resin to enjoy the optical effect forever.

 

[BoggledBeagle]

Today I bought another Deepcool AG620 cooler. Previously I complained that the base of the first cooler was a very pointy cone - really awful shape.

I am pleased to report that the second cooler has much better shape than the first one - it seems much flatter. I do not think that it is necessary to adjust the shape of the base, if you want to keep the cooler universal.

I will try to flatten just the middle part, so that the cooler gets the shape of the excellent Assassin IV cooler, which has presicely machined base - truncated cone with perfectly flat spot in the middle. It seems it is already pretty close to the desired shape and it will be easy to do.