4850 hd vs 6770hd
6670 would be about 50-60% faster than the 4850
if you are going Xfire 6670, it is probably better spent getting a better single card.
http://www.videocardbenchmark.net/high_end_gpus.html Anything 650ti or higher on that chart should do well in GW2.
However, remember that GPU is not the only factor in FPS performance, CPU is just as important especially as GW2 is very CPU-bound. (Read Q4 here 4 details)
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(edited by kirito.4138)
the 4850 is around 2-3 generations old..that includes the technology used to build the card. the 6670 is the better card by a big margin
[XFX R9 270X O.C Edition][Thermaltake 600W PSU]
[Windows 8.1 64-Bit]
Xfire can work but it is going to be a power hog. I have Xfire 5770 which works pretty closely to a 5870, so it’s nice. But if you are buying a new card get a single and ebay what you have.
Thanks for the input guys. lowest FPS i get is around 31 fps when LA is packed out. FPS is not really a big one lag is the killer atm.
just out of curiosity, what type of processor do you have?
[XFX R9 270X O.C Edition][Thermaltake 600W PSU]
[Windows 8.1 64-Bit]