I have this Cougar PSU powering my system. Its not that much but its enough to run my single GTX 570. No problems encountered so far. Its been my buddy for the last 10months. Just like to share my experience with cougar 🙂
Cougar is a Quality company, Also effective on silence, I highly suggest getting some of their fans =P
I just wish their cases were a bit more up to date standards, for things like Water cooling, cause their cases are amazing too.