Still not excellent, but not terrible. Also, why are you getting dual 5670s??
Dual 5670s will pull about the same power as a 5770 that PSU will probably be fine.
yes defintely get the ocz over that other psu. it is a decent psu. the other psu LOOKS ok but its probably as bad as the coolmax cu-500b i just bought. looks beutiful wighs nothing and has flimsy connectors. the the fan is nearly silent but moves like no air...