Pros: Cheap, low power consumption, cool, small size, excellent folder, great SLI capabilites
Cons: Only 2 way SLI, not 3 way
I bought 2 of these cards for my new build last year and they're just great. The fans on idle are dead silent - the cards never heat up beyond 65C under full load. However when used in SLI, the top card does tend to hit 80C, which is still quite good compared to high end cards.
They are great for folding, averaging about 8500PPD.
In terms of gaming performance, once card honestly just isn't going to cut it for new games at 1080p with high settings. Two of them on the other hand can handle just about any game extremely well. Crysis 2 @1080p with the second highest graphics preset gets about 22fps on a single card. Double these up, and you get a very nice 40fps average. On less demanding games (MW2), a single card absolutely shreds the game, getting a full 60fps while under only about 70-80% load. HAWX with 2 cards and vysnc turned off got around 130 fps on the maximum settings.
Yes, these cards are old and really not worth a whole lot now, but for any budget builder looking for silent operation without sacrificing a lot of eye candy, this card cannot be beat. Like I said above, for the price, the performance you get is quite good - especially if you're using it to fold.