Originally Posted by Martyr82
Thanks! I really enjoyed building it. The 1100 makes it so easy to do with ample space n holes all around.
(I assumed you're talking about my case based on 9800gtx comments
I'm completely intrigued. I've never heard of this before. Can you elaborate?
Do I just plug it in and set it up in physx tab of nvidia control centre?
What does it do? help CPU perform physics processing?
Not exactly. A specific clutch of games out there support 'hardware' aka 'gpu' physics calcs via the PhysX API that the Forceware package installs. When you play one of these games (some examples are: Mirrors Edge, Batman AA/AC, Mafia 2, and Alice:Madness Returns), the game can use your nV card to do the physX processing INSTEAD of the CPU. It typically enables much higher 'levels' of physics effects to be chosen in the game options, and then you see extra effects/more complex details in the game.
Now, you can run the physX either on your main rendering card, or on a 'dedicated' card, which is what the other poster was suggesting using your 9800GTX for. Obviously running a dedicated card allows the main card to focus on rendering, so in many cases you'll get higher FPS when running a dedicated physX card, but it depends somewhat on how demanding the game is to begin with.
Many people will say it's not worth it to 'buy' a card for physX and that's usually true, but if you have a suitable card laying around (and a 9800GTX is decent level of card to use for physX), it doesn't hurt to try it. But keep in mind that it ONLY does something when playing one of the games that supports hardware physX. And there's not that many of those.
Here's a pretty good demo video
showing the difference in Mafia 2. Helps if you run 1080p and maximize the video. Keep your on eye on the 'shrapnel' effects and how long the chunks of wall that get blown off persist in the game world with PhysX on High. If you tried to run High PhysX on your CPU, that game would run at like 10fps ...