While the ThermalTake ToughPower 550W may not be the most powerful PSU out on the market right now, that is not it's purpose.  The idea behind this PSU is to provide stable power, with the least variation on the lines possible.  Read the review at Bjorn3D to see how well it does it's job.

"Today, I'm looking at Thermaltake's yet to be available ToughPower 550W power supply. You might

ask what's the big deal? Let's say you already have a PurePower / PowerStation ~500W model. While

the amount of Watts may be enough, your new components may require more stable voltages and higher

amperage (strength of an electrical current). As the name implies, ToughPower is all about

stability."

Here are some more Systems articles from around the web:

SRC="http://www.pcper.com/site_gfx/icon-system2-small.gif" ALT="Click Here to go to Systems"

• TARGET="_blank">Ultra Products X-Connect 2 550W PSU Review @ Bigbruin.com

  
  
• Thermaltake Purepower Power

Station 520W PSU @ Legit Reviews