Estimated wattage is around 330 but I plan on overclocking both the cpu and gpu. Should I upgrade?
Definitely get a bigger psu, the g1 uses as much power as a 290. I would recommend 750 watts so you will have plenty of headroom.
Upgrade to like a 600w. Although Seasonic's psu's are of very good quality and could handle your system.
Yeah I dont know much about this stuff but what I have seen, a 750w might be a bit overkill and I dont what any wasted money or energy.
If you buy a 1000W PSU it won't always pull 1000W through the system. It'll only use what it needs to, but the efficiency varies depending on the current load. Say you buy a 1000W PSU, you'll want it to be drawing roughly 500W for maximum efficiency, and less or more and you'll lose efficiency.
I have a 750W PSU in my system, and I have a G1 Gaming 970. These things need it, they overclock so well.
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