AMD Radeon HD 7770 bottleneck

hussien el attar

Honorable
Aug 29, 2012
37
0
10,530
my PC
GPU :ATI HD 4670 1GB
CPU :AMD PHENOM X.3 8650
resolution: 1280x720
PSU : 600w seasonic
currently i have enough money to buy an HD 7770
and a in a couple of months i will be able to upgrade the cpu too.
so my question is ;
will i notice a big difference before upgrading my cpu ?
Or should i upgrade the cpu first ?