I just got a 680 which replaces sli'd gtx 275s. I can play arkham city @1080p with everything maxxed out but when using physx on high i definately see a performance hit. I thinking of using one of the gtx 275s as a dedicated physx card but have some questions.
- i've read here that you need to be careful the using two cards won't degraded the pcie speed from x16 to x8 on some motherboards. My motherboard is an older EVGA 132-YW-E178-A1. The marketing around the board states: "There are 3 PCIe x16 slots supporting 3-way SLI video. There is no downgrade of slot speed with this board, the 780i supports full x16 bandwidth across all three slots to take full advantage of your video cards". Does that mean i don't need to worry?
- i realize there are only a handful (if that) of games that take advantage of physx, so is it possible to shut the gtx275 off when not needed to save power and heat?
- would my performance be the equivalent of using the 680 alone without using physx at all?
thanks for any input!
- i've read here that you need to be careful the using two cards won't degraded the pcie speed from x16 to x8 on some motherboards. My motherboard is an older EVGA 132-YW-E178-A1. The marketing around the board states: "There are 3 PCIe x16 slots supporting 3-way SLI video. There is no downgrade of slot speed with this board, the 780i supports full x16 bandwidth across all three slots to take full advantage of your video cards". Does that mean i don't need to worry?
- i realize there are only a handful (if that) of games that take advantage of physx, so is it possible to shut the gtx275 off when not needed to save power and heat?
- would my performance be the equivalent of using the 680 alone without using physx at all?
thanks for any input!