GTX 660ti/660 on 400w w/ +12V@30A?

I'm thinking of upgrading my gfx card and my psu. My current 400w psu w/ +12V@20A is no where near the req. for a gtx 660/660ti. I found this psu on newegg:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817703034

It's also only 400w, but its 12V is at 30A for a total of 360w on the 12v.
I might do some medium overclocking on my fx-4100, but currently my weak 400w can even support a stable 4.2ghz.

Can it support a 660ti and/or 660?

ps. the psu only comes with one PCIe cable, so for the 660ti i would get another 6pin cable

I imagine it should handle a 660 fine, probably a 660Ti too but I wouldn't even attempt to go higher than that.

Buy at least a 500-550w. Being to short on the PSU will make it work harder. You can find good 500w PSU at that price.

I have one of these in my HTPC
http://www.newegg.com/Product/Product.aspx?Item=N82E16817194095

Seasonic, you cant go wrong.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151094

Corsair CX, good too
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

That unit can run that setup easily.
It could run a (stock) GTX680 and that CPU (at stock) for that matter.