The PC Power & Cooling Silencer 750 Quad CrossFire Edition is an
excellent power supply that delivers on all the advertised claims. It
produces very stable, clean DC outputs efficiently at an affordable price.
For most users (operating below 400W DC output with good case cooling), the
Silencer 750W Quad CF PSU will be very quiet, but it can become noisy at
high loads with warm case air temperatures."
FULL STORY @ PCPER (http://www.pcper.com/article.php?aid=437)