I don't think hes in the US though, LC Power is an European brand IIRC.
That PSU isn't Diablotek horrible, but still bad.
The supposed 336W on the 12v rail (probably overrated) is pretty close to the limit of powering a GTX460, combined with the no-so-great brand makes it pretty much a no-go.
I think the high wattage psu's would be more for you and I would be looking for psu with over 600w. Remember pc updates happen every day and who knows what else you might wont to add to your machine in the near future.