Nvidia's HybridSLI consists of two technologies - HybridPower and GeForce Boost - both of which are only available under Windows Vista. The power-saving HybridPower works by turning off the dedicated graphics card when you're not playing games and dynamically switching in the onboard GeForce 8 series graphics. GeForce Boost, meanwhile, allows the graphics core of a dedicated card and the core of the integrated graphics to be used in SLI mode.
Asus's M3N-HT Deluxe/Mempipe supports both AM2 and AM2+ AMD processors. To get the best out of the board you really need to use a Phenom processor, as this allows you to get the full benefit of the HyperTransport 3.0 interface which is theoretically 10,400MBps (but current Phenoms work at the lower end of the HT 3.0 specifications, at 7,200MBps).
