Thread: PhysX with ATI?
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Old August 11, 2009, 06:42 PM
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Originally Posted by enaberif View Post
I wouldn't necessarily say that. I mean I remember when I ran Mirrors Edge with and without PhysX enabled on a single GPU and with it off my cpu didn't work as hard but turning it on it taxed my GPU more.
That is part of the doubled-edged sword that is GPU physics acceleration: either you shunt the processes to your CPU and get less processing potential or you move it onto the GPU which is usually being fully utilized for rendering.

When PhysX is done well, it provides some really stunning visuals but is the hit in rendering performance worth it? It forces you to make a choice between Image Quality or Physics and I personally don't want to have to make that choice.
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