Originally Posted by Steven-1979
Would a 260 c216 physX card slow down a 480 sli setup? Just curious because I'm seriously debating picking up another 480 from EVGA b-stock since they're so cheap ($220) but I sort of also want to keep this 260 since it has an EVGA lifetime warranty and if it dies down the road I think they'll toss me an upgrade (lol) ... plus my new mobo has 3 pcie2 slots anyway
My 2-part answer:-
1) GTX480 SLI + GTX260 (Physx)
This setup almost certainly will give better Physx performance than without the Physx card.
Brettjv has done a very similar study with GTX470 SLI + 8800GT. We know that GTX470 SLI is certainly in the same performance category as a pair of GTX480s while the 8800GT is (much) weaker than a GTX260.
His result shows that a noticeable benefit with the 8800GT. Note the graph in post #2 here:
So, I think this part is quite certain. The only 'worry' is the heat management.
2) GTX480 SLI
If you decide to get another GTX480 to do SLI and ditch the GTX260, remember to specify the 2nd
GTX480 to be the Physx card.
Brettjv (yes, it is him again
)has also done a study on using 1st card vs 2nd card (GTX 480) as Physx card. He found that using the 2nd card would bring better performance.
Note the graphs in his thread here: