Why that looks like my old ThermalRight SLK800 heatsink I used to have... I believe they also had a 92mm version (SLK920) I think. It worked pretty well.
92mm version was the SLK900. I had that one and it worked very well. Run it with a Vantec Tornado and you have a crazy air cooler, howver, the noise is pretty high!
Cool! Thanks for all the help. It is/was paired with an 80mm Vantec Tornado - combo pictured below - but I needed to remove the fan to get some good pictures of the heatsink.
Now that I've been reminded what it is, I'll be putting it up with a bunch of stuff on the FS/FT Forum.
I bought a couple of the old outrageous CFM Delta fans and mounted them on a AMD Slot A CPU in a mini-tower case. Joked with my friends that the case could hover a couple of inches off the ground if I left it on its side with the cover removed