Presently i am using a hd 6850. I have heard many people saying that physx enabled card has a lot of advantage over non-physx (ATI/AMD) cards.
Is that realy true?
What is the advantage of having physx?
Is there a night and day difference between a physx n non physx card?
Please let me know.
Thanks in advance......
GPU accelerated physX is only supported in a limited number of games, it gives more realistic cloth and particle effects when there is a card in the system to offload it to, otherwise the CPU handles it, it reduces the complexity of it some but the physics is still present regardless of if there is a GPU in the system to accelerate it or not.
Same here, but only because I don't play any of the GPU accelerated games. I LOVE TF2 and to a smaller extent, L4D2. None of these games support GPU accelerated PhysX. If however I LOVED Batman:AA, I'd be singing a different tune.
PhysX is a way to make more realistic graphics (Google Batman Arkham Asylum if you want an example-there are tons of vids and explanations).
Now in real world, there are very few games that actually use this technology, and those that use it, use it in various degrees. Some are very noticeable (Mafia II/Batman AA for example), and some you really can tell the difference. I don't think its worth it as you take a HUGE performance hit if you don't have a powerful nVidia card. For reference: I have a GTX 460 and with Batman AA, it was pretty cool, but even OC'ed to 850 core, 2000 memory it struggled to keep my target 60 FPS at max settings (Max PhysX/Max AA/1920x1080). I could easily dip down into the high 30's in very PhysX intensive areas. Now you might say that over 30 is great, but for me I want 60 . I have very sensitive eyes lol.
Now with a special patch you can buy a separate nVidia card and put in in a spare PCI-e slot and use that for a dedicated PhysX card. The problem being, you need a decent card to do this, which can increase the cost exponentially with little benefit. Here is a good Tom's article on doing this if you are interested:
The minimum requirement to support GPU-accelerated PhysX is a GeForce 8-series or later GPU with a minimum of 32 cores and a minimum of 256MB dedicated graphics memory. However, each PhysX application has its own GPU and memory recommendations. In general, 512MB of graphics memory is recommended unless you have a GPU that is dedicated to PhysX.