zinaldo :
My friends told me that bought card 260 or higher will be the highest performance from a card, from 5870 or 5850 cuze ati card dont have phezex Technology
I think you have to learn what PhysX actually does before you can be in a position to actually decide if it appeals to you. Like DX10/DX11, a game vendor could put on their box that their game supports PhysX / DX10 / DX 11 but that doesn't mean they spent the time to make the most of the technology. You have to decide if graphics effects like this are important to you:
-Should smoke and steam be visible and behave like smoke an steam ?
-When your toon runs through a park and your go thru a pile of leaves, should they be disturbed or remain glued to the ground ?
-If you knock over a desk with papers on it, should the papers stick to the desk or should they fly around ?
- Should flags wave in the breeze ?
-Of you walk thru a curtain or spiderwebs should they move / get torn ?
-If you fire a rocket launcher at a plaster wall, should there be more than a smudge on the wall ?
-Should your enemies fall in exactly the same ways all the time ?
-Should glass break, well like glass breaks ?
My youngest son (13) goes thru games so fast he wouldn't even notice....the middle guy (18) is more interested in the "immersion" and realism and this is more important to him. Batman's vendor it seems put a decent amount of effort into utilizing these effects in a way that significantly affects the user's experience.
read the game review here:
http://www.firingsquad.com/hardware/batman_arkham_asylum_physx_performance/
and watch the video to see if this kinda thing tickles your fancy.
Also note, that at least for now, ATI users can enjoy PhysX technology on /XFire capable boards
http://www.tomshardware.com/news/nvidia-ATI-physx-patch-gpu,8786.html
So basically, if the technology is attractive to you, go for it. If I had to choose from what I see here:
http://www.firingsquad.com/hardware/batman_arkham_asylum_physx_performance/
and what I see in the images here for DX11:
http://www.anandtech.com/video/showdoc.aspx?i=3650&p=2
It's a pretty easy choice.
The big question is, do you need a card today ? Unless your card just broke, or if you just got a new game which is unplayable, there's no need to make a decision now. We just saw a big dude (ATI) enter the DX11 ring and he looks pretty tough, but the other guy (nVidia) is still in the dressing room.....I'm not willing to bet who's going to win until I see what comes outta that room and how his performance stands up.