ive got a 7870 right now and i can run games fine at ultra 1080p with low aa. so im contemplating upgrading my card to a 770 or 7970/280x. do i even need to do this? about how long do you think my card will last? if i get a 770 or 7970 i will also have to upgrade my power supply.
if the 7870 is fine, i would wait till the new nvidia 800 series, but if you cant then either of the cards you tlaked about will be fine aslong as you have a 500ish watt PSU or higher. you can go lower but i wouldnt recommend it.
Would you personally upgrade from a 7870 if it was your system?
I have two in crossfire. My opinion is 780 780ti or 290x aftermarket when it comes out. If you have no pressing need to upgrade right now, dont. Watch and see how the gpu market plays out.
i wouldnt bother. it plays the games you want at settings that you can live with for a bit i wouldnt bother.