PhysX used to be only available through a dedicated card, but now it's included in most, if not all, modern GPU's.
The only advantage to having a separate card these days is to take some of the load off the GPU.
[Edited by Skyheart, 4/22/2012 1:37:50 PM]
I think he might've meant "how do I enable this?" rather than "how does work?"
I have an option in NVIDIA control panel that allows it: Link
But from what I'm seeing with a quick check on teh Googles, unless your card actually utilizes NVIDIA drivers, dedicating a card to PhysX might not be possible.
So never throw out your older GPU's if above an 8800GTX, as they are still useful... but you will need a 600W PSU for both cards at least, a secondary Physx controller doesn't take much wattage.
To do this, you go into the Nvidia control panel and goto 3D Settings, open it up and you will see a heading Set Physx Configuration, you can set it to the CPU however that is not recommended as thats like having an ATI card LAWL, but if you have a secondary card you select that and bobs your uncle.
[Edited by DABhand, 4/22/2012 10:14:15 PM]
I still use my X9770 despite the fact that it's imploded about a dozen times, but I'm not sure on the 9400 - 2.66 GHz isn't a whole lot. Though it is still a quad, so that's by and large not all that bad. I honestly don't keep up with specifics in regards to AMD cards, but just looking through their online catalog the 6950 is good enough to last you a while. The super duper ultra mega expensive 7 series Radeon doesn't really seem worth the cash for a relatively small bump up a notch or two.
I'd say replace the CPU, slap everything from your current PC in there (provided you're just building a 'new' one, that is) and you'd be pretty well set for a while. 'Course, I might just be talking out my so it would be prudent to consult another doctor.
Thanks for the second opinion (mine being the first I guess). I am seriously considering an upgrade. Here is what I am looking at... mind you it will not be the cheapest of upgrades.
And in the past I was an advocate on using the Extreme boards from ASUS but now, no, they are way overpriced for the chipsets they have, you can have similar for half the price.
Memory is good, will work well with triple channels (bear in mind other people reading, just because its DDR3 does NOT mean its triple channel compatible :P)
Also your SSD has MLC memory chips, which has a 2-5million write life. Which means chips will die after a possible maximum of 5 million data writes to it. SLC SSD drives are much better with a life span of 50-150 years. Plus 240GB is too much I feel. I will write a topic about SSD drives and misconceptions people have with them. But for now, I would seriously rethink your SSD.