If you need a new PSU for your next small form factor system build, check out this review of Silverstone's NJ450-SXL 450W power supply at LanOC.
Early on the SFX form factor was limited in power and because of the overall density struggled with heat and with that noise. That has improved a lot over the years, especially with Silverstone being a champion for SFX all the way from the start.
