ATI Radeon HD 4000 Series discussion

[Xello]

seems that once you switch on Physx on the nv gpu that it cuts framrates , so they will be advising 2 or 3 gpu solutions so it wont really be put to much use by normal pc users/gamers

AMD on the other hand have found a magic box that allows acceleration without the performance hit? (any sources?)

Havok is used in far more games than PhysX

For PC games i count 44 for Havok and 74 for Physx (from the 'partial list' on that site), I was quick and may be 1 or 2 off, but i'm way too lazy to do it again