Light DIY on my 1240 accelerator

[rkauer]

About the '040 heat: only the last revision 040 is almost cold to touch (MC68040RCxx). Notice those are hard to see in the wild and highly desirable.

 Not-so-good old XC '040 really needs heatsinks and fans, specially the 25Mhz ones (dunno why).

[mikeymike]

Would this do the trick?:

http://www.cclonline.com/product-info.asp?product_id=15295&tid=gsearch

[Damion]

Would this do the trick?:

http://www.cclonline.com/product-info.asp?product_id=15295&tid=gsearch

Generally compound will perform better, but a thermal pad is no prob whatsoever, especially for an '040.

[pyrre]

Personally I would use a dab of good thermal compound in the center, then a small amount of thermal glue in two (or more) of the corners. Add a small weight (like a paperback) on the heatsink while the glue dries.

A friend of mine did just that to a gforce 2 card... it died very fast...
the glue used expands when hardening. (it was arctic silver, the best)
It is recommended using only thermal glue.
If the heat sink is to be removed... make a clip...

[Damion]

A friend of mine did just that to a gforce 2 card... it died very fast...
the glue used expands when hardening. (it was arctic silver, the best)
It is recommended using only thermal glue.

I also use Artic Silver (ceramique and alumina adhesive), and have had *excellent* results. I think the trick is to use very little glue, and apply a little weight while it dries... YMMV.

If the heat sink is to be removed... make a clip...

Yeah, some kind of mechanical fastening is always best.

[Chieftain]

On my BlizzPPC I used Arctic Silver 3 and a couple of cable ties fastening a heatsink on the '040, the trick is to be careful not to overtight the cable ties as it would bust the RAM.
Suppose it could work for you too.