I understand it isn't out yet, but I've also heard that Beth is using an entirely different game engine than the previous FO and ES games. I'm not sure if this will raise the system requirements or not though. Anyway... here are the main specs:
Intel? Pentium? Dual Core? T4500 (2.3GHz/800MHz FSB/1MB cache)
MEMORY 4GB Shared Dual Channel DDR3 at 1333MHz
Genuine Windows? 7 Home Premium, 64-Bit
Intel? Graphics Media Accelerator X4500HD
High Definition Audio 2.0
8X CD / DVD Burner (Dual Layer DVD+/-R Drive)
Like I said before, it's sole purpose won't be for gaming.
Thanks