What power supply are you using?
PSU: Silverstone Sst-St1500v2 1500w
Motherboard: MSI 890FXA-GD70
Case: Chenbro RM41300G **
** There are two similar models, 8 slots and 7 slots.
The one with 8 slots is "G" or GPU model.
Many stores show stock photo showing 4GPU in the case, but are actually selling the 7 slot version, so make sure you get the right one if buying.
Pic showing the 8 slots.
http://img847.imageshack.us/img847/5971/img0711n.th.jpg
