Power consumption question

[Mikey-G]

I'm looking at building a new PC, I bought a cool master GX 750-watt 80Plus bronze certified power supply but im not sure if this will be enough.

I'm going to have:


Gigabyte GA-Z77X-UP5 TH Z77 - Mother board
Intel Core i7-3770K Ivy Bridge 3.5GHz (3.9GHz Turbo) LGA 1155
16 gigs ddr3 ram - Looking at overclocked ram possibly at 2400mhz(whats the difference between dual chanel and quad channel kits?)
1Tb Seagate HD
SAMSUNG 840 Series MZ-7TD120BW 2.5" 120GB SATA III Internal Solid State Drive (SSD)
Blu-Ray/DvD Burner drive
4 case fans, cpu heat sink

(big issue here...) I want to throw in an: ASUS GTX680-DC2T-2GD5 GeForce GTX 680 2GB

I called the computer store near me and the guy said it should be enough but it sounds like I dont have any buffer for over clocking. Can anyone comment or figure out if i'll have enough? I'm not looking to sli either.

 

[jmsellars1]

You have plenty of power, more than enough really. A decent 550W unit would be fine if you didn't want to overclock. With overclocking I'd suggest 600-650W+