CPU upgrade? phenom ii X4 965

[gwkeong]

current set up
M4A77TD PRO
radeon rx 480
phenom ii x4 965

gpu was bought just a few months back, but as i was gaming i keep experiencing sudden lag/drop in fps. i read somewhere that the cpu might be bottlenecking the gpu so i started monitoring the usage. gpu usage average is around 40-70%, where cpu is always at 80-90%. So probably my cpu is having trouble keeping up? with my current motherboard is there any good cpu i can upgrade to? or do i need to upgrade both for a decent upgrade?

Thanks

 

[CountMike]

Yes, definite mismatch with that GPU but unfortunately there's no processors for that MB that would make up for difference.

 

[gwkeong]

Yes, definite mismatch with that GPU but unfortunately there's no processors for that MB that would make up for difference.

Thank for answering, so i should upgrade my motherboard first? or do i need to upgrade both motherboard and cpu?

 

[CountMike]

To go to latest generation you have to upgrade MB, CPU and RAM.