Actually the thermaltake case, is just as heavy as the cool master stacker 830, very roomy inside, but I love that the motherboard tray slide in a out, this is easy to work with. The PSU I uses are already ready for the new 9800Gx2 and the 280 gtx, 8 pin and 6 pin connectors.Alos the PNY 9800 gx2 don't come with psu adapter. Now I Want the QX9770!