I could use cubix for the test..
GTX 580 is working great thanks to Juan Salv, and other cow members.
Here are simple result.
Mac 5.1 // 24 ram
My source was DPX and ProRess and result is same for Both source.
Quadr 4000 // GTX 580
12.5 F // 25 F
3.5 // 10 f
After test I decide to have two GTX 580 in Cubix