What PSU do I need for my system?

[Cyrus Cee]

I'd like to know if I need a bigger PSU from these specs. The results from the calculators seemed too varied, and I'd like the opinions of real people. Let's assume I'm going to overclock this.

Specs:
Asus Sabertooth 990FX
AMD FX-8120 8-cores
Antec 650W PSU (currently)
GeForce GTX-770 GPU
1x8GB RAM stick
Deskstar 2TB HDD @7200RPM
Samsung 840 Pro 128 GB SSD
4 Fans
1 DVD drive

 

[iceclock]

Ur current ps is fine and will deliver the power u need to run that system nicely. No need for upgrades