1x GTX480 = 4.40 Msamples/sec
2x GTX480 = 8.60 Msamples/sec
4x GTX480 = 16.67 Msamples/sec
8x GTX480 = 32.20 Msamples/sec
2x GTX480 = (8.60/4.40)/2 = 0.97727
4x GTX480 = (16.67/4.40)/4 = 0.94715
8x GTX480 = (32.20/4.40)/8 = 0.91477
It's really perfect !!
It's more than expected !!
I am happy.


