My system
CPU: AMD FX-4130 Zambezi Quad-Core
3.8GHz
MOBO: MSI 760GM-P34
HDD: Toshiba 500gb
SSD: SAMSUNG 840 120gb
PSU: 600w
normally i tell people "something always bottlenecks something" and dismiss talk of a cpu bottlenecking a gpu.
however in this case, yes, your system will BADLY bottleneck the 980. Replace the motherboard and cpu, get a better psu then you can go around looking for a 980