[Shark413]

The heatsink is from an old motherboard, specfically the one that cools the Southbridge chip. I had several to choose from but I picked this one because it fit perfectly. It is actually wider than stock but thats what I wanted. I milled a small groove on the bottom of the heatsink so that the overlapping portion would clear the Mamba Max case (you can see this in the picture). The larger heatsink adds a lot more surface area and the fan blows across the heatsink and caps.