When I first opened the package and read "450W PSU" I was very sceptical if this unit could perform - and I was completely wrong. Certainly you should not power a GeForce 8800 GTX SLI rig with it, but you probably knew that. For a normal PC with a single graphics card it is absolutely sufficient. The attractive price of $75 makes this a great deal when building a new system.
What I found to be most impressive with the Corsair VX450W is that it is extremely quiet. In our testing it lead the noise charts by quite a margin over all other PSUs tested so far. That's why I will use it in my daily work system.
It is not only quiet but also very efficient, claiming our number one efficiency spot with over 83%. So aside from having a quiet, stable, cost efficient system you are also helping to save the environment. Should the unit break some day, Corsair's 5 year warranty will ensure you get a replacement fast.