Quote Originally Posted by hollo View Post
beautiful

but if you don't mind a little nit-picking the cold plate is too thin :/
(well, the parts of it around the edge mostly)
figure 3 on this page http://electronics-cooling.com/artic...v_article2.php shows the result of some experiments done with heat-plates of varying materials and thicknesses
you can see that with an 8x8cm square heat plate (the bottom two lines) the temperature continues to decrease even as the plate thickness increases over 16mm with a 1x2cm heatsource (because the extra thickness is required to allow the heat to transfer 'horizontally' through the plate), and your 62x62mm x2 cold-plate has 20% more surface area and about a 50% greater distance between the centre and the furthest edge from the centre than a 8x8cm plate
(copper has a "k" (thermal conductivity) of 400 W/mK, so the 2nd to bottom line would be a good comparison for the copper cold-plate)

Thanks, but lets be reasonable. Is it really fair to compare my cold plate to data from that review article? I can see some really important differences between them

1. That data was made with a single heat source but my cold plate has two.
2. The heat transfer coefficients are at least an order of magnitude to high.
3. 300W is too much for an e8400
4. The 8x8cm shape and the cold plate shape are very different

I think heat spreading is just way too complex to to declare that my cold plate is too thin based on that data.