The title says it all. I'm wondering what would be the best card for the PhIIX4 980. Assume I don't overclock. Price isn't really an issue.
Phenom II X4 980BE
MSI 785GM-E65
2 x 4GB 1600MHZ DDR3
1080p resolution
Main use; gaming
That is one fine motherboard you have in your rig, very power efficient. Unfortunately though, it's not the best overclocker, so I doubt you can push 980BE much. I would probably get a 1055T
95W version (125w are way too power hungry for that board) and give it a medium overclock for best balance between power and speed (that board should easily handle 3.3 - 3.6 Ghz OC). I upgraded one of the 4-core Denebs with a Thuban and it made a tremendous difference in games like Battlefield 4. So it's certainly worth a consideration.
To answer your question though, I would probably get something like Geforce 770 or Radeon 280x. Probably the Geforce, for slightly better power-efficiency and acoustics. If you don't want to invest much and aren't a demanding gamer, this
card works very well with me (I am only a casual gamer, though).