Originally Posted by mus1mus
Yeah, I thought of that as well. But I'm also thinking about layers of them to form an acceptable thickness. I don't know if layering them would affect the temp conductivity though. Currently using PK-1 on my VRMs and a custom made HSF
soldered into a copper bar. But I think a backplate will really help in my situation. Since my board tend to shut down at high clocks randomly without errors. Might be some of the VRM doesnt have enough contact with the Heatsink.
I also got some aluminum bars laying around and a dremel to make the backplate.
I had the same problem before I made my back plate. The Middle vrms were not making contact with the heatsink and they would cause the board to go into thermal shut down. It only happpened at the higher clocks, but simple fix.
You don't really need to use a thermal pad, You can use the 3m double sided foam tape as well ( at least i'm pretty sure it would hold up to the heat )
The backplate isn't really used for cooling, its there to prevent the board from warping so all your VRM's can make contact witth a Heatsink/water block. The reason you need the thermal pad on the backside is to isolate the plate from the board. Might as well use a thermal pad to transfer heat to the plate for a bit of passive cooling as well. You can use what ever you can think of there as long as it can tolerate the heat, and isolates the back plate from the motherboard ( you wouldn't want to short your board out)