you can use a EVbot for a ATI 5870 if you whant, all vga's that have Volterra VRM
this is where you connect of the 5870
here is the map for the evbot connector
now only one out of the 4 connections to the evbot seems to need +5v, +3.3v and gnd (please correct me if im wrong mate), so if your using a classified board then you can connect that to your evbot and the other 3 gfx cards dont need power...
with just 2 wires he takes your 5870 VCCD and Vxxx?? to 2.0v if needed
