That MOBO still has only 1 PCIE2 slot. If you never will want the possibility of using 2 graphics cards, then fine, but then you could probably also shave a few bucks and cut down the PSU a notch, and make the fewer unused cables a little easier to manage/hide.
Newegg.com - SILVERSTONE ST50F-ES 500W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply
just looking at the pic though, this silverstone's cables are not nearly as well sleeved, and some appear to be absent sleeving, compared to the Corsair's which are very neatly and fully sleeved (and more of them) I have the Corsair, very nice, and xtra long cabling, but had to tuck several long and unused cables away. Alot of excess capacity for me, as of now. It wasn't any big deal at all in my very big case though, and I am very pleased with it.