Vrm heatsink

[leonb]

were can i get one for a m3n78 pro motherboard

 

[Mondoman]

I would think something like this is what you're looking for:
http://www.petrastechshop.com/enmomohekit.html
However, the text says it comes with thermal *tape* which is NOT a good conductor of heat. Instead, I would use a very thin layer of thermal epoxy to attach the sinks (note: this is a permanent bond, unlike with the tape):
http://www.petrastechshop.com/aralad5grpan.html

(I'm not affiliated with Petra's Tech Shop; just a happy customer there)