I got an SLK-800A last week with a YS Tech 80mm fan with speed control. I was trying to figure out which fan to get, and settled on this because I didn't know how well my XP1700+ was going to overclock and how cool it was going to run. So far it runs with a tiny voltage boost at 2GHz (trued clock, 166FSB) and runs fairly cool with the speed control set to just past half-way. I don't have a TMD fan, but it should work better than the Volcano 7 with a TMD fan. BTW, did you mean a Volcano 7+ instead of the regular 7? The 7 uses an 80mm fan while the 7+ uses 70mm, and the TMD fans are 70mm. Either way, the SLK-800 heatsink should be better because it has more surface area than the 7+ plus I think that air doesn't flow through the 7+ easily because it has curved fins from the skivving process and the fins are closer together (IMO).