Dual-path Heat Xchange (DHX) technology aka. the fins on top of the ram to disperse heat better

a 295 is essentially 2x 260's in SLI so you would have to disable the sli bridge (in the driver software) and run them as two seperate screens.

there was talk of SLI over multiple monitors, not sure on the status of this, I'm sure somebody else on the forum could help you out on this one