750W enough for this...?

[Legend]

Looking at the EVGA SuperNOVA G2 750W for the following;

- Gigabyte Z97X-UD3H-BK
- i7 4790k
- Coolermaster Nepton 240M AIO
- 16GB (2x8GB) DDR3 PC3-19200C10 2400MHz
- OCUK GTX 970 Reference (single for now, but SLI in future)
- x2 SSD's
- x1-2 mechanical HD's

I will likely overclock the CPU and GPU. Is the 750W enough?

 

[Legend]

OK thanks, good to know. I saw some people elsewhere saying it was bare minimum, but I know the 900 series are much less power hungry so I figured 750W would be enough... I just wasn't sure what with overlocking.