Flipchip.net has posted a review on the Hedgehog 476 Slot 1/A Solid Copper Heatsink.
There are 2 sets of holes in the Hedgehog that allow you to fit it to an Athlon or Intel Slot 1 CPU. After giving the copper surface a light rub down with some 800 grit wet and dry, I put on a nice thin layer of heat transfer compound and very carefully placed the Hedgehog onto the CPU and gently screwed it on until the clips where almost touching the PCB of the CPU, nice firm fit and no movement at all!Read more