The OEM heatsink solution is only a problem in a desktop tower. In a rack mount server with slower host CPUs (but more sophisticated motherboards and many more PCIe channels) AND is designed for the Tesla cards, there is no problem. That and given said servers are in A/C server room making fan noise of little issue. I thank you Rob for finding the recommendation of the Swiftech MCW82. Even tho I have ordered everything for an independent WC method, I am also pursuing the Zalman air cooling heat sink ... it would be simpler. I don't think anyone here is expecting an erector set assembly despite enthusiasm. No one has suggested a GTX 580 from anyone fits, thus the reason for pursuing some solution starting several months ago. Before making the original post here I emailed several after market manufacturers & vendors asking for ideas ... not much help. The idea that Rob got from a contact at Nvidia caused me to re-review Switech products. While I am at it ... kudos to Rob. Since I have been on this forum he has offered the most sensible and consistently sensible advice versus all other sources on the net for computer construction and beer. Even extensive 2D & 3D graphic dynamics would still be a blink versus the hours to days of consistent near 100% GPU double precision utilization in most of 6 GB RAM. These cards have been designed to meet DOE & high performance computer center requirements. Cards such as the GTX 580 are consumerized less expensive versions ... I don't care how intensive a gamer anyone is. Not to mention that eventually you will stop for some human body function. I am not complaining, but did want to give credit where credit is due. I also value the ideas and suspected that there must have others out there with a Tesla M2090. BUT, if you are not crunching double precision numbers ... sell your card to me.