Hi, Yesterday I was bored and picked up a PNY GTX650 card and benchmarked it against one of my GTX480's in Batman AC. The two 480 GTXs are in 8X slots while the 650GTX is in a 4X slot. The system is a P8Z68 Deluxe 2600K build. I ran it in 1920x1200 resolution testing in low detail mode vs high quality mode with all the eye candy and AA turned up all the way. Pretty much shows that the 480GTX creams the 650 GTX in Physx performance when the gpus don't have much work to do but when the heat is on the GTX650 is helpful. Here are my results detailing the low score - high score - average scores. I ran the tests a couple times and averaged the results. Lowest Quality Batman AC Low High Average 40.5 127.5 81.0 480GTX w/ded 480 Physx 29.0 120.5 70.5 480GTX w/ded 650GTX Physx 31.5 121.0 70.5 480SLI w/ded 650 Physx 40.0 125.0 77.0 480SLI shared Physx High Quality Max Settings 9.5 76.0 55.5 480SLI shared Physx 10.5 93.5 58.5 480SLI w/ded 650 Physx 18.5 48.0 39.0 480GTX w/ded 650GTX Physx 8.0 52.0 39.5 480GTX w/ded 480 Physx So as you can see with the highest quality game settings if I didn't have the 650GTX and was using the 480s in SLI and Physx shared the highest score suffers a bit though the average being just 2-3 % better. I'm hoping that would translate in higher fps and smoother performance. Just wanted to share those numbers. Maybe save someone $100. Its interesting though in the lowest quality settings adding a 650GTX in there hurts performance by like 10% compared to just having 480s in SLI running Physx as well. Thanks.