I just purchased an MSI GTX 560 ti Hawk (Twin Frozr III) and I was thinking about running Physx on a dedicated card. Clearly, the 560 Ti will be much more than adequate to render any game at max settings and do Physx calculation on top of that, but I was considering that I could potentially increase the lifespan, or possibly overclockability of the card (if I ever do dual monitors) by offloading Physx calculations on a cheaper card.
I did some research and it seems that most people who do this run Phsyx on a card of comparable power to the graphics rendering card.
My question is what the threshold is for avoiding slowdown. Clearly, I need the secondary card to do the calculations at least as fast as the 560 Ti could do both if it were a single card.
What I do not know is what this threshold is. I have a 9600 GSO in another computer that runs games pretty decently for its price, and obviously Physx calculations aren't as taxing as graphics rendering, but I would wager that pairing the 9600 GSO with the 560 Ti would result in a slowdown.
I do not want to spend a considerable amount of money on this plan, and it only really interests me as a hobbyist, but if I could get a card for sub 50 dollars that could do the Physx calcs then I would probably go for that. I know the 9600 GT is considerably more powerful than the GSO, and they sell for pretty low prices. Would a card like that suit my purposes? Or am I going to need something more like a GTX 260 or something? Or perhaps somewhere in between like an 8800 or 9800?
I did some research and it seems that most people who do this run Phsyx on a card of comparable power to the graphics rendering card.
My question is what the threshold is for avoiding slowdown. Clearly, I need the secondary card to do the calculations at least as fast as the 560 Ti could do both if it were a single card.
What I do not know is what this threshold is. I have a 9600 GSO in another computer that runs games pretty decently for its price, and obviously Physx calculations aren't as taxing as graphics rendering, but I would wager that pairing the 9600 GSO with the 560 Ti would result in a slowdown.
I do not want to spend a considerable amount of money on this plan, and it only really interests me as a hobbyist, but if I could get a card for sub 50 dollars that could do the Physx calcs then I would probably go for that. I know the 9600 GT is considerably more powerful than the GSO, and they sell for pretty low prices. Would a card like that suit my purposes? Or am I going to need something more like a GTX 260 or something? Or perhaps somewhere in between like an 8800 or 9800?