the ratings seem quite ok for your setup mate, but m not sure about the brand of the PSU (supercomp). Seems its a local brand and you must have got with ur cabby. So cant rely on that.

Moreover these local PSUs will cause havoc to your system. Better get rid of that buy a good PSU like coolermaster 460w or gigabyte 460w. In case if you require an excellent, long lasting, future proof PSU go for corsair 450w or 550w. The latter is very future proof in case if you are going to for higher end gfx card...

hope this helps..