I was planning on buying this:
http://www.amazon.com/MSI-N560GTX-Ti...gtx+560+ti+448
But a reviwer made me change my mind
"1) The MSI heatsink design dumps hot air into your case (instead of venting the air out). This is an even bigger problem when you run SLI. I had a MSI Twin Frozer (GTS-250). In single card mode the VGA would top out around 70-76 C. When you added the second card for SLI, the temps jumped on the first card to 99C.
2) The fan blades are EXTREMELY FRAGILE. I broke 2 blades off when a loose power connector got sucked into the fan.
There are no aftermarket solutions to replace these fans. You have to use an aftermarket heatsink (typically they take up 2-3 slots in your case) and are expensive.
So if you insist on buying these cards be prepared for a hotter than necessary case and be careful around the fan blades, you break 'em and the replacement is very expensive.
So spend the $20-30 extra and get an EVGA or Galaxy version (or spend the same and get an ASUS) with a different heat sink."