Re: 2nd card still needed with 480 for Physx ?
Very here is what I found.
I only used Fluid Mark, Batman and the rocketsled demo because I dont have time for much else.
No numbers just observations. Sorry.
Batman for me has a slower minimum FPS that with my 280/8800gt combo. Dont know why and not really worried. I think it is a driver issue because Fluidmark runs twice as fast with the 480 doing all the work. Switching to the 8800gt cuts the Fluidmark score in half.
Rocketsled demo ran about the same but has some stutters. I will try Cryostasis when I have more time.
Intel i7 2600k @ 4.8ghz 1.35v, 1.40v full load
Cooler Master Hyper 212
Gigabyte 580 @945/2232
4 Gigs Ripjaw @ 1600
Antec (a good one) 650w
A Partridge in a pear tree.