Mining with four 280x and two 290, seeking advice on PSU

[kryptopojken]

Hey Guys,

1) Thoughts on running 4 of Sapphire 280x and 2 of Sapphire 290 on a GIGABYTE GA-990FXA-UD3 board?

2) Also wondering if a 1050W PSU combined with a 850W will be sufficient? (going to be running a standard hard drive connected to mobo as well)

Cheers,
Kryptopojk

[cryptoderf]

1) I don't think UD3 have that numbers of slots X16.

2) As for the PSU, I guess you should multiple 300w to the number of video cards, plus the mobo itselft (45 to 80 W) plus + CPU (45 to xxx W) plus other rigs (hd, usb, wifi dongle etc.).