NVIDIA announced at SIGGRAPH that “GeForce 8, 9, and 200-series cards are all getting PhysX support as of today via a free GeForce Power Pack.” Video after the break.

It’s not a direct response to AMD unveiling the HD Radeon 4850 X2 and 4870 X2 yesterday, but NVIDIA also came to play at SIGGRAPH, and it’s got lots of new GPU-as-CPU toys for us this morning.

[via Engadget]