Originally Posted by FALC0N
To the best of my knowledge, there is no reliable data available concerning failure rates of these units. However, the preponderance of user feedback very strongly suggests that the current CX doesn't fare well against the VX.
I have already seen more failure reports and a higher percentage of failures then we ever saw with the VX, and it has been available for a much shorter time. Its a lot harder for unskilled users to screw up a PSU like they might other components. So I view these reports are more reliable than I would for other components.
Just to address this directly -
The VX series was launched in mid 2007 and hit EOL in early 2010, or roughly 3 years.
The CX430 launched in later 2010, and has been updated to Bronze this year, but has been continuously selling for over 2 years as well.
In sales, CX is many times higher than VX ever was. If failure rates were identical, you'd hear more about them just due to that.