Summary: Ordered an 8800GTS 320 from a seller (junior330ci) hoping to SLI with the other one i have. Got an 8800GTS 640 instead :|. I did have trouble initially with SLI config, but a few tweaks later, worked like a charm. So the deal was a win-win for me...
Summary: I just installed this into my Dell Dimension 5150. Originally I had a Radeon X300 card PCIe card. When I opened my system, I looked at the new card and knew there'd be a problem. To get it to fit I had to remove the video card's retaining bracket (the piece that you screw the card to the case).
Summary: Amazing video card, I am howver having to upgrade my system cooling. This card runs (Idle) at 75c and under load at well over 80c. It maintains stability, but is so hot! I would still recomend this card to anyone that wants great graffics at a low price.
Summary: This card will run pretty much any current game at max settings with a reasonable resolution. It's quiet, reasonably cool, and this is the sweet spot in terms of price/performance. Half the price of the GTX for 80% of the performance (I'm estimating based on what I've read).