Tbh don't go for 'nameless' power supplies unless you've seen multiple good reviews. The PSU is the most underestimated component of a computer, it could either boost your performance by supplying stable power or kill everything. Literally.
I'd recommend a beefy 750w corsair unit, they are rock stable and supply more than enough power for nearly any i7 setup you could make. I know it's an investment but it's more expensive to replace for example your harddrive if it dies because of unstable power, not even counting the worth of the lost data.
I'd recommend a beefy 750w corsair unit, they are rock stable and supply more than enough power for nearly any i7 setup you could make. I know it's an investment but it's more expensive to replace for example your harddrive if it dies because of unstable power, not even counting the worth of the lost data.