Enermax Revolution 85+ High Efficiency PSU
by Christoph Katzer on November 6, 2008 4:15 AM EST- Posted in
- Cases/Cooling/PSUs
Efficiency and PFC
This efficiency graph surely does not need much explanation. The Enermax Revolution 85+ is the most efficient power supply we have tested to date. It reaches a little higher than 90% efficiency with 230VAC, but even with 120VAC it still manages to hit almost 89% efficiency. With 90VAC up to 86% efficiency is possible, which is simply amazing.
About the only negative is that you need a load of at least 200W to reach the optimal efficiency range. However, you can still get 80% efficiency with 120W to 150W (depending on input voltage), but then we don't expect anyone running a load of 150W to be interested in a 1000W PSU. Beyond the 200W mark, this power supply is more efficient than most other power supplies -- almost regardless of rating or load. The Enermax Revolution 85+ continues to improve on this result up to the peak efficiency reached at around 500W.
We were hoping for a similarly impressive power factor correction result, but it's merely the equal of the other high-end power supplies we've tested in this area. The 120VAC and 90VAC are above .99 for almost the entire test, which is good. As usual, 230VAC struggles but still starts at .964.
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strikeback03 - Friday, November 7, 2008 - link
You should have stated you were using a 700W power supply, your post indicated you thought you were drawing 700W.http://www.anandtech.com/casecoolingpsus/showdoc.a...">http://www.anandtech.com/casecoolingpsus/showdoc.a...
I have a similar system on my desk here at work (only 3 GHz on the q6600, but it is a B3 stepping; 2 HDD, 1 optical, 7300GT instead 0f 9800GX2) and idle is about 100 W at the wall, peak draw is like 160-170. Your system probably draws another 120-150W at idle, and maybe 250 at full power. A 700W power supply is quite reasonable for that system, as it probably uses 200-250 at idle and another 150-200 at full bore. It won't draw 700W.
Freddo - Thursday, November 6, 2008 - link
This PSU is so cool, as it's very energy efficient & have modular cables.I would really like to see a PSU as energy efficient as this one, but down at ~400W or so instead, and with passive cooling, or at least "half passive", with a small 80mm fan outwards that only starts to spin when it's near full load and getting hot.
Christoph Katzer - Thursday, November 6, 2008 - link
Wait until next year's ~CES/CeBIT, there is a manufacturer who might have exactly what you're waiting for...iwodo - Thursday, November 6, 2008 - link
As Anand as well as other tech site has confirm, even with GTX SLI and Quad Core CPU, you will hardly need more then 500W, lets give it a peak spike of 40% will only means 700W.So why are we having PSU that starts at 800W? When only less then 5% of market uses it. Not to mention 1000W PSU.
Shmak - Thursday, November 6, 2008 - link
All power supplies reach their efficiency peak at about 50% load, which is shown on any psu review you care to look at. Therefore, if your system idles at around 500W, a 1000W psu will likely be most efficient for your build.GaryJohnson - Thursday, November 6, 2008 - link
Watts don't mean anything. What matters is having enough stable amps on a couple (or single) 12v rails to power SLI or Crossfire.OddJensen - Thursday, November 6, 2008 - link
Try a Core i7 w/HD4870X2 in crossfire. You'll soon find out why we have 1kW PSUs.larson0699 - Thursday, November 6, 2008 - link
How about a Pentium D or Skulltrail with quad GTX 280's?Do like the small jets and shut off everything else before powering up THOSE engines.
Nigel.k.l - Tuesday, November 26, 2019 - link
I purchased mine back in 09 and its still running, I7 8700k 1070ti system