Will my GPU bottleneck my CPU? And is this build compatible?

Resolution is 1680 x 1050

Also, my PSU is enough right?

Cpu:AMD Phenom II X4 955 Black Edition Deneb 3.2GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Quad-Core Processor HDZ955FBGMBOX
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Upgrade to this CPU only 50$ more
Delivers great performance than the ahlon 2 x4 640

Go for this Processor and Unlock the cores it'll be worth the effort and you'll get the kick of a lifetime for 90 bucks alone.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Your board is capable of unlocking it and there's a 80% chance that it'll work.....  

You'll need to change the PSU though with that card and processor, 550W is the minimum for your GPU what happens to the rest of the rig?
go for a more power @650-750W PSU with a 80% + rating......