Originally Posted by TwoCables
Anyway, this thread is an excellent addition to OCN because it proves that what we have been saying all along is correct: make sure that whatever card you are using for PhysX processing is not so slow that it bottlenecks the main card.
Proving 'established fact' is not bringing much to the table. I was hoping for new
information being brought forth.
Two data points are important:- the card with which the curve starts to level off and the 'minimum card'.
This video review does not shed new light to either one of these 2 points.
One one hand, powerful cards like GTX560Ti (384 shaders) and most certainly GTX580 are simply plain obvious to have well passed the leveling-off point. And, GTX550Ti (192 shaders) is also too new for most people to have a spare one sitting inside a closet collecting dust and waiting to be used a Physx card.
So, to this end, older cards like GTX260 (192 shaders), GTS250 (128 shaders) should be used to match the GTX580.
On the other hand, confirming 8600GTS (32 shaders) to be too slow is not helpful to establish (just a little bit more precise ) on the 'minimum card'. Older cards with 64 shaders (eg 9600GT) and with 96 shaders (eg 8800GTS, 8800GS, 9600GSO, GT240) should be tested.