Geforce 280gtx, quad core i7, 6 gig ram. running it at 1920*1200, max everything. Can get a bit choppy in places, but this is still beta code, so it's not optimised yet. Otherwise, fairly solid framerates.
And it's very simliar to BF2. the air vehicles aren't overpowered, like they were back then, and the weapons are good and balanced. I didn't find myself victim to rifleitis. The medic has cabable LMGs, the boomsticks lay waste to close range people, and the sniper rifles do their job admirably.
I can't wait for the full version. The single player should be a laugh, too. The multi just does everything right. Hell, i can even forgive them for no health bar.