Enermax Launches the Pro82+ and Modu82+
by Christoph Katzer on March 25, 2008 1:00 AM EST- Posted in
- Cases/Cooling/PSUs
DC Output Stability and Quality
On the above graphics, we show the percentage the power supplies are able to regulate the voltage output. The test shows that even power supplies in the same series do not always perform the same. The most important rails are the 12V rails, and here the 385W version is clearly regulating well. The Pro82+ 525W and Modu82+ 625W are both under 3%, which is also a very good result.
Detailed Voltage Distribution
Both larger versions 525W and 625W models have slight problems with higher loads, since the voltage drops towards the lower end of specification. In contrast, the 385W starts quite high and thus doesn't drop too far under the specified ideal output of 3.3V.
It looks odd when watching the regulation of the 385W. In fact, it doesn't differ too much from the others and regulates within 4-5%, but the 5V rail starts at about 5.00V and then drops very low as load increases. The 3.3V started much higher and therefore the drop doesn't matter too much. Regardless, all tested PSUs are well within specs so there's nothing to worry about.
The 12V rails look good on all of the units. The best results come from the 525W power supply, since it does not drop much under the specified ideal 12.00V. The other units look decent as well and there is nothing to worry about. The Pro82+ and Modu82+ provide very good and stable DC regulation.
In case of ripple and noise, we were surprised to see very little distortion on the rails. The highest amount of ripple on the 12V rail was 16mV for example. The other rails were similar except the 5Vsb rail, which went a little high. That's pretty common, unfortunately.
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Bremen7000 - Tuesday, March 25, 2008 - link
Horizontal bar charts for price? Really? I guess when all you have is a hammer...Woodchuck2000 - Thursday, March 27, 2008 - link
Well put...One of the shoddier reviews I've seen on Anandtech for quite some time, including some shocking graph abuse and grammatical errors throughout.
In the DC Output Stability and Quality section, There are four PSUs in the top three graphs and then only three shown in the analysis below. Which 525W supply is that?
In the graphs below, I assume the numbers at the lower half of the nonsensical Y-axis are meant to be negative? And is the load percentage on the X-axis a percentage of total rated PSU capacity, or rated line current. And in either case, are other lines loaded and if so how? You'd expect completely different 12v load characteristics depending on which other lines are loaded any how much.
"In case of ripple and noise, we were surprised to see very little distortion on the rails. The highest amount of ripple on the 12V rail was 16mV for example. The other rails were similar except the 5Vsb rail, which went a little high. That's pretty common, unfortunately."
Why is that surprising? How did you measure ripple? Is that amplitude or peak above rated? A little high under what circumstances? Why's that common, and if it's only the 5V Standby Rail, why is that necessarily unfortunate? The whole article is full of meaningless generalisations like that one...
Anandtech has enough quality writers not to need filler like this. All in all, D-
C'DaleRider - Tuesday, March 25, 2008 - link
Apart from the upgrade in caps, there seems to be no design improvements. On the contrary, the workmanship looks a bit dodgy. I'd wait to see if these blow up left right and center after a year of use before passing a verdict.
[quote]To our surprise, there are two main capacitors, which is something we don't see often in Enermax power supplies.[/quote]
Whaaaaa??? Last I checked the entire FMA lineup had "two capacitors" on the primary side.
Spacecomber - Tuesday, March 25, 2008 - link
At the beginning of the section on the Pro82+, you state, "The package is quite different from the Modu82+ series and comes in completely different dimensions". I think that you were just describing the dimensions of the box that the power supplies come in, but the picture at the start of the article, where the power supplies are stacked on each other, gives the impression that the power supplies themselves might be of different dimensions.Can you confirm that the external dimensions are the same for all these new models? Are these power supplies of the typical size?
Thanks.
Christoph Katzer - Tuesday, March 25, 2008 - link
Yes, only the package is different.strikeback03 - Tuesday, March 25, 2008 - link
Your photo of the label for the big Pro82+ shows 625W, but your charts on pages 12 and 14 say Pro82+ 525W. Which was it actually?Didn't look elsewhere, but these are on Newegg right now for $10-30 more than you list in the review. The Infiniti 650 is priced the same as the Modu82+ 625W but the Infiniti ships free, and the Infiniti 720W is cheaper than either after a $25 MIR.
Griswold - Tuesday, March 25, 2008 - link
Any good reason (like you couldnt get ahold of one) for not including the 425W PSU of this line? Its by far the most reasonable of the three... too bad.