Originally Posted by slaWter
It shouldn't matter but apparently it does.
Yes I use PhysX and I like it. But there's no need for a dedicated card IMO.
Yes....I have always had it enabled and I use it, but as SlaWter mentioned no need for a dedicated one if using powerful cards like a GTX480 and thats mostly what I meant not negative returns.
I will give you an another example Batman Arkham Asylum using just the GTX480 was more than I needed, With the 9800gt installed I notice zero performance gain then the same for Cryostasis no performance gain with the 9800gt. Again more power usuage and heat etc.
If using lower end cards then that might have better gains.