Basically , I'll give my short review based on 1 Week experience with Quad SLI or Dual GTX 295

Stock ASUS models. Very good cards, the person that put the exhaust on the top was a moron. If it blowed the air from the front, it would be amazing.

Quad Sli in W7 impossible, that's not Microsluttering , that's LeapFrameFroggin' , folding is fine if you have enough dummy plugs, which I don't have.
The -gpu 2 Client usually finds it funny and folds on the same GPU as -gpu 1 client, briliant.

As for the OC , is not worth it, the card is fast as hell everywhere.

Don't Stick the two GTX 295 together without at least 2 cm gap between them. I was using it on eVGA X58 and I had to move the 2nd GTX 295 to the 5th slot instead of 3rd , because i was looking at three digit temps [ celsia ] . As they were positioned in slots 1 and 5 , temps fall down to mid 70's ~ 80's

Gaming is fun if the Game supports it fully ... Crysis Warhead was a charm ... 1920*1200 4x AA 16x AF 50 ~ 60 FPS stable
Prince of Persia ... boy that was a pixelated crack ... sync issues like hell.

All issues Are simply driver based, I tried 3 drivers some problems went away new occured.

The technology is great but the drivers are immature, SLI is fine Tri SLI is fine Quad SLI = I felt like nvidia Betatester.

But for 3Dmarks is fine, I presume noone buys dual GTX 295 just for the fun of it ... like me

I'm going to refund both cards and grab me a nice pair of eVGA GTX 285