Originally Posted by pioneerisloud;12364585
Get whichever of the two cards are cheaper, from a manufacturer you trust (I personally would avoid XFX, anything else should be fine though).
PhysX is a marketing gimmick from Nvidia. It's just extra fancy particle affects that the GPU processes...but ONLY with an Nvidia video card.
No, only the Nvidia card can do PhysX. You can use an ATI / AMD primary card, and an Nvidia PhysX card though (assuming 2x PCIe lanes).
Both of the cards that you have chosen perform VERY similarly in both single and dual GPU configurations. The only difference is the brand on them, and PhysX support (which really isn't worth basing your decision over).
The GTX460 won't be enough to handle PhysX and doing gaming at the same time anyway for most PhysX games. So its not worth it to base your decision on PhysX alone. It is neat to have the option to have those effects on or off. But my single GTX470 couldn't handle Mafia II with full PhysX. Same with Just Cause 2. Added the GT240 for PhysX and driving my other monitor....all is fine now.
XFX is a great company. every1 started to hate them after the 4890 incident.
ive owned XFX 8800GT, good patch 4890, bad batch 4890 and 5830 and they all worked fine (except for bad batch. i RMA'd that sukka and they sent me a 5830
PhysX is a gimmick. ive used it b4 and its not really worth spending money for a physX GPU. besides, Source, Havok and CryEngine3 have much better physics.
i say go with the 6850. they scale way better than the 460 in CF and are quieter, cooler and use less power too.