You have a fairly low power build there so why not go completely silent?
http://www.overclockers.co.uk/showproduct.php?prodid=CA-016-SR
Your i3 should be easily cooled by the passive system and you don't appear to have a gfx card to worry about either. A few of us on here have this case (and the precursor) and it is a lovely case, although I would recommend against the black one (which I have) as it marks so easily!
You'll need to spend about another £80 on a 150-160w pico PSU though which would upp your budget by about £50.