The CPU's are socket 940. The retention plate is different from that of a desktop. The only heatsinks I can find that fit it are for 1U servers which doesn't really help. I want to put something like a Xiggy on these CPUs.
There are only 2 screws to mount the heatsink to the retention plate, they are on opposite sides and slightly offset (~1/4 inches) from one another. Like this:
Not sure if there's anything out there that will fit this that doesn't rely on the 40mm fans in front of it.
I really wish I could get more rep on overclock.net... I need 35 to try to sell a video card, and I currently only have 22. You only get one point whenever you get repped on there, even if its from a mod or admin, so it takes quite a while. I want to try to trade my 4870 x2 for a 5850.
I don't have the right tools or resources to make my own bracket, but I could probably work with the engineering teacher at school if need be. That would be a last resort though.