It’s much harder to make MARS than GTX295, especially in cooling and power design.

ASUS took a lot of efforts in design to make two GTX285 into one MARS.
Custom-made heatsink with total 8 heat-pipes (4 each side) to keep it cool

5+1 phase power for each GPU
With astonishing 4GB memory onboard

Now we can make GTX285 run from Tri-SLi to Quad-SLi.
This one is really going to be a record breaker.

Some details for MARS.