I run Nvidia 8800GTS SC 320mb and finally took the side off of the PC. Temps dropped 20-30 degrees (F). As the day wore on (I live in Cal.), I put my 24"x24" box fan on it. She ran @ 129(F) all day long. (I realize this is a very short term fix, but may save alot of $) Clearing nearest PCI slot helps. A higher output CPU fan helps the board temp more. I see external GPU's on the way. An adaptor cable from PCI-e to a wind-blown, clear-sided, LED illuminated, "DAB" (display adaptor board). Happy Days.