PC Power & Cooling Silencer 500W
by Christoph Katzer on June 9, 2008 2:00 AM EST- Posted in
- Cases/Cooling/PSUs
DC Outputs
The lower voltage rails drop slightly more than 3% below the ideal amount, while the 12V rail stays a bit closer to spec. The 3.3V and 5V rails start right at spec (just slightly higher); they then drop slightly, reaching just below 3.20V and 4.85V at maximum load. The 12V rail starts high at 12.14V and drops to 11.87V with 10% overload, easily staying in spec. These voltage drops will not cause any problem at all when this PSU is in use in a system.
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xeizo - Monday, June 9, 2008 - link
I´m also positive to the importance of reporting ripple figures, the standard is max.50mV ripple but lately there is a lot of psus sold happily stating 150mV ripple in their specs even though it´s out of the standard.If such companies voluntarily reports 150mV one can only guess how high the real figures are. Or how many more companies out there are a little bit smarter and state 50mV ripple even though the real figures are mabe ~200mV.
High ripple can damage many parts in the computer, lowers performance and rises temperature. So, yes, it's pretty important and should be mentioned in all psu reviews. Not mentioning it is no guarantee that the performance is really great.
HOOfan 1 - Monday, June 9, 2008 - link
50mV is the max specification on the 3.3V and 5V rails. The max spec on the 12V rails is 120mV.