Am I providing enough power?

Spongecak3

Honorable
Aug 4, 2013
15
0
10,510
I currently have an Antec 750W HCG 80+ Bronze rated psu powering my system.
The system:
i5-3570k @ 4.2 Ghz
2 4 Gb DDR3 Ram
1 1T 7200 RPM HDD
1 Asus GTX 780 Direct CUii stock speeds for now
5 120mm fans including the cpu fan
1 200mm fan
1 CD/DVD R/RW
3 USB devices that draw power

The online calculators says this would only draw 470 ish W at 90% load. This seems low or is it about right? I also ask because I've been eyeing a Seasonic X 1050W.