all support crossfire, most support SLI
Its a shame how the P6T can do 3-way SLI while the Deluxe can't...I don't think 16/16/4 is good for 3-way sli anyway...x4 is too much of a bottleneck
the deluxe has 16phase power compared to the P6T's 8...
There will be another deluxe, the P6T Deluxe V2, which should be cheaper then the V1 because it lacks SAS support