One of the best pads around are Fujipoly [1] with thermal conductivity of 17 W/mK.

These made a big difference on several laptop workstations that were having overheating issues.

Some default pads are good enough, but in some cases thermal conductivity is a problem and you just need a better pad.

[1] http://www.frozencpu.com/products/17499/thr-181/

On 06/27/2014 09:59 AM, Mihai Popescu wrote:
It think the designer wanted to keep the board compatible with the old
case, or the other way around. To cool the CPU more one needs better pads (
i doubt there are much better, since the industry has standards) or adds a
fan.

Current situation is like this:

         \__________/          - CPU
------------------------------------ - PAD
================== - Aluminium heatsink
------------------------------------ - PAD
.................................... - CASE

A better approach is a cast aluminium case, but this is too expensive. So
one can do pressed steel sheet like this:

         \__________/          - CPU
------------------------------------ - PAD
        .....................
....../                     \....... - CASE

            ^^^^^^^
           bend area

This way, one pad and the extra aluminium heat spreader can be out of
equation. Of course, and extra bending of the bottom sheet is needed. Maybe
the price will go higher, maybe the CPU is too far and the bending distance
is too much for the sheet. This is just the industry method, excuse my
ASCII "art", please.

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