What motherboard should I buy? Asrock 990FX Extreme 3 or the Gigabyte GA-990FXA-UD3 motherboard? I was leaning towards the Gigabyte board, but is it worth the extra $20? I don't plan on over clocking anything. I'm gonna use Amd FX 4300 cpu, geforce gtx 560 to, patriot ssd.