With PhysX

Without PhysX

With PhysX

Without PhysX

Fluids are also missing in CellFactor's software mode, but particle volumes look to be the same as with the PhysX card.

Obviously, disabling some of the effects means the software mode is less physics-intensive than CellFactor is with PhysX hardware. Still, the basic CellFactor gameplay is intact in software mode, complete with telekinetic powers and flying crates galore. The software-only version ran so well, I couldn't help but try some benchmarking to see how it compared to the PhysX card.