ASRock 970 EXTREME4(100$)
ASUS M5A99X EVO(90$)
I'm not sure if they support 5 cards at the same time, and if they need A1-B17 shorting.
Also, would they work with a TX650 V2 PSU and a Seasonic X-750?. I think it's fine, but I'd like someone to confirm me.
Thanks in advance to all of you.
i use that asrock board with 5 5830's without issue or need to short pins. i run 2 cards on the board and 3 with extenders. i draw 815w total for the system but that includes using a 2.5" notebook hdd, overclocked cores, 1 card will not downclock memory, and all running stock voltage. so, best case i would guess if booting off a stick, downclock mem on all cards, undervolt a bit would still be above 750w.