My main reason for posting here is I play PlanetSide 2 and my fps hits the toilet when I'm involved in a large battle. I'm thinking I'll either switch to Intel and grab an i7 and motherboard or grab a new GPU, perhaps a 780 or R9 290. Not sure if I should hold out for next gen components or grab something now that will be relevant for a few years.
Currently this is what my system looks like. My most recent purchases were the motherboard and SSD.
ASUS M5A99FX PRO R2.0 AM3+
AMD Phenom II x4 980 BE
w/ NOCTUA NH-U9B SE2 Cooling
Sapphire HD6950 2GB GDDR5 PCI-E
G.Skill NQ Series PC3-10666 8GB 4x2GB DDR3 1333
Kingston HyperX 3K 240GB SSD
Hitatchi Deskstar 7K1000.C 1TB SATAII 7200rpm 32 MB Cache
Windows 7 64-bit Home
OCZ 700W ModXStream Pro Power Supply
Certainly grab a new GPU if you desire better performance in your games. Your CPU, even though a bit old, will certainly hum along just fine with a higher performing GPU. However, mind that when many players are on screen you will experience lagg. I experience lagg myself with my GTX 670 and i5-3570 (a great deal more powerful hardware than you got atm.) in Planetside 2 during tense situations.
The R9 290 has better value compared to the GTX 780, performing equally, yet having a lower price tag. If you were to step up the resolution, the R9 290 would even outperform the GTX 780 due to its high memory bandwidth as well as 4 GB of VRAM. I myself, even though a Nvidia fan, would grab the R9 290 myself if I were to choose.
I wouldn't play the waiting game and wait for the next gen, unless a date was confirmed. Technology will keep updating all the time, it's about getting the best you can for your money at the current time.