Enermax Revolution85+ 950w Modular PSU

Simulated Load testing

Simulated Load Testing

To provide our readers with the most accurate results, Overclock3D uses a professional grade SunMoon SM-268+ ATE load tester capable of placing a sustained load of 1690w across a total of six rails (including +5vsb and -12v) on the PSU. Unlike our previous resistor-based load tester, the SM-268+ gives us the ability to adjust amperage loads in increments as small as 0.01A while also measuring voltages and wattage readings on-screen.

During today's tests, we will be placing the Revolution85+ 950w under 25%, 50%, 75% and 100% load levels at both room temperature and inside a hot box regulated to a temperature of around 50°C. Additional cross load tests will also be performed under these conditions to simulate how the PSU would perform with a heavily uneven distribution of load. It should also be noted that the all +12v rails on the Revolution85+ will be combined during the testing, allowing us to make best use of the load testers configuration.
 
Enermax Revolution 950w Results @ Room Temp
   +3.3v  +5.0v  +12v  +5vSB  -12v  AC Watts /
 DC Watts
 Efficiency  Intake /
 Exhaust
Δ Temp
Test 1
(Low)
6.25A  4.25A 16.25A  1.25A  0.15A  282w /
249w
 88.29%  19.0°C /
 20.3°C
 1.3°C
3.34v 5.05v 12.22v 5.04v  -11.40v
Test 2
(Med)
 12.50A  8.50A  32.50A  2.5A  0.30A  544w /
495w
 90.99%  19.2°C /
22.5°C
 3.3°C
3.30v 5.02v 12.16v 4.99v  -11.39v
Test 3
(High)
18.75A 12.75A 48.75A  3.75A  0.45A  809w /
737w
 91.10%  19.8C /
25.5°C
 5.7°C
3.26v 4.98v 12.08v 4.93v  -11.43v
Test 4
(Full)
 25.00A  17.00A  65.00A  5.00A  0.60A  1079w /
976w
 90.45%  20.4°C /
28.4°C
 8.0°C
3.23v 4.94v 12.00v 4.87v  -11.49v
Test 5
(x-load)
20.00A 20.00A 1.00A 0.00A 0.00A  213w /
178w
83.56% 21.0°C /
27.3°C
 6.3°C
3.29v 5.02v 12.24v 5.06v -11.73v
Test 6
(x-load)
 1.00A  1.00A  70.00A  0.00A  0.00A  902w /
850w
94.23%  20.7°C /
28.7°C
 8.0°C
3.32v  5.01v 12.02v 5.02v  -12.04v

Looking first at the voltage output in standard Tests 1-4 both the +3.3v and +5v rails put up a fairly good fight with only 0.11v and 0.07v fluctuation from the Low and High level tests on the +3.3v and +5.0v rails respectively. The +12v rail takes the biggest hit of the group by dropping from 12.22v down to 12.00v, but this is obviously nothing to be ashamed of given that all rails are well within ATX spec and the unit was actually loaded to 976w in Test 4 - 26w above the units stated output. One area of slight concern is the -12v rail which sits at around -11.4v at most load levels. Thankfully this rail has little to do with the stability and operation of a PC system, so we can almost forgive Enermax for letting things slip a little here.

The crossload results on the other hand are simply amazing! With 40A spread across the +3.3v and +5v rails and only 1A on the +12v rail during Test 5, the Revolution85+ managed to keep voltages well under control with results better than some of the non-crossload tests. This trend also continues into Test 6 with a massive 70A load on the +12v rails but only 1A on each of the +3.3v and +5v rails and all voltages once again remaining almost perfect. This is a first for any PSU tested here at OC3D, so well done Enermax!
 
Enermax Revolution 950w Results @ 50°C
   +3.3v  +5.0v  +12v  +5vSB  -12v  AC Watts /
 DC Watts
 Efficiency  Intake /
 Exhaust
Δ Temp
Test 1
(Low)
6.25A  4.25A 16.25A  1.25A  0.15A  282w /
249w
 88.29%  51.1°C /
48.6°C
 -2.5°C
3.34v 5.05v 12.22v 5.04v  -11.47v
Test 2
(Med)
 12.50A  8.50A  32.50A  2.5A  0.30A  544w /
495w
 90.99%  51.8°C /
48.8°C
 -3.0°C
3.31v 5.01v 12.14v 4.98v  -11.47v
Test 3
(High)
18.75A 12.75A 48.75A  3.75A  0.45A  806w /
736w
 91.31%  50.5C /
48.3°C
 -2.2°C
3.26v 4.98v 12.06v 4.91v  -11.51v
Test 4
(Full)
 25.00A  17.00A  65.00A  5.00A  0.60A  1079w /
976w
 90.45%  52.0°C /
51.5°C
 -0.5°C
3.23v 4.93v 12.00v 4.85v  -11.56v
Test 5
(x-load)
20.00A 20.00A 1.00A 0.00A 0.00A  215w /
178w
82.79% 51.2C /
48.2C
 -3.0°C
3.29v 5.02v 12.24v 5.06v -11.75v
Test 6
(x-load)
 1.00A  1.00A  70.00A  0.00A  0.00A  902w /
850w
94.23%  51.2°C /
49.2°C
 -2.0°C
3.32v  5.01v 12.02v 5.02v  -12.04v

With the temperature cranked up to 50°C and a re-run of all the previous tests, the Revolution85+ proved to be one tough cookie. Throughout most of the results the voltage didn't budge in the slightest from the room temperature tests, showing that the unit is easily capable of delivering its full 950w (and more) in hot environments. Even more impressive than this was the efficiency levels, which stayed above 90% in Tests 2,3 and 4 and hit a whopping 94% in Test 6.
 
Enermax Revolution 950w Scope Results @ 50c
   +3.3v  +5.0v  +12v
Test 1
(Low)
T1_3.3V T1_5V T1_12V
Test 2
(Med)
t2_3.3v t2_5v t2_12v
Test 3
(High)
t3_3.3v t3_5v t3_12v
Test 4
(Full)
t4_3v t4_5v t4_12v
Test 5
(x-load)
t5_3.3v t5_5v t5_12v
Test 6
(x-load)
t6_3.3v t6_5v t6_12v

Finishing up with the scope readings taken during the 50°C tests, it's easy to see that the Revolution85+ did extremely well. Ripple on the +3.3v and 5v rails stayed below 15mV throughout the testing with the +12v rail also performing well and keeping ripple below 20mV at all times, While I've certainly seen results like this before in tests 1-4 for some other PSU's tested recently, the fact that the Revolution85+ can keep ripple in check when in a heavy cross-load scenario is extremely good.
 
Now let's move on to the conclusion where I attempt to sum up the previous few pages.
«Prev 1 2 3 4 5 Next»

Most Recent Comments

30-04-2009, 04:02:52

JN
"Having already got a taster for the Revolution85+ in pre-production format several months ago, it's time for another visit - only this time on a retail model."

http://www.overclock3d.net/gfx/artic...064651130s.jpg

Enermax Revolution85+ 950w Modular PSU

30-04-2009, 04:05:33

tinytomlogan
*pounce

Looks like the Corsair 1000w finaly has some competition?

Seems to me this wins on performance but the Corsair wins on quality?

30-04-2009, 04:13:28

JN
Yeah its a bit of a tough call really. Although the performance of the Corsair HX1000 isn't _quite_ up to the same level as the Revolution, the Corsair is a fair bit cheaper, is more generic in appearance (for those who don't have a red PC) and doesn't have any of the cable issues that the Revolution does.

30-04-2009, 04:20:27

tinytomlogan
The cables would be a big thing for me personally, but if you can hide them well in your rig and you want the best PSU you can get then it looks like the Enermax gets that crown.

30-04-2009, 07:43:39

Diablo
I think 195 is a little bit more than I'd be prepared to pay for it, considering the little niggles it has. If they corrected those in some sort of a revision, it would definitely be worth it.

30-04-2009, 08:10:39

VonBlade
Goddam that's brutally expensive. Amazing, but yowsers.

Great to see the hot box really stressing them. And I totally agree about the molex thing. 6 SATA cables is plenty, 8 is overkill (who has 6 HDs?) and 12 is just ridiculous especially when it comes at the cost of molex's which work for pumps and lighting and and and.

(btw, the "discuss in the forums" bit on the last page isn't a link)

30-04-2009, 08:43:45

JN
Quote:
Originally Posted by name='VonBlade'
Goddam that's brutally expensive. Amazing, but yowsers.

Great to see the hot box really stressing them. And I totally agree about the molex thing. 6 SATA cables is plenty, 8 is overkill (who has 6 HDs?) and 12 is just ridiculous especially when it comes at the cost of molex's which work for pumps and lighting and and and.

(btw, the "discuss in the forums" bit on the last page isn't a link)
Yeah I'm not quite sure what possessed them to put THAT many SATA's on there. Even for server use thats excessive. Most 2/3U rackmount servers cant hold more than 9 disks.

The ideal cable configuration in my opinion is:

2x SATA cables, one with 4 connectors, the other with 2.

4x Molex cables. two with 3 connectors, two with 2 connectors

30-04-2009, 12:09:57

PeterStoba
I think they should just include basic cables, and 2 of each, and you should be able to order custom cables.

or not custom, but select from a larger range, custom lengths etc... would cost alot but worth it

30-04-2009, 15:11:21

Peace11uehman
of course this comes out the day after i order my corsair 1000...

although im pretty happy with my decison because i know that the corsair has proven itself

30-04-2009, 15:23:05

Luigi
Woah, those Sata's do seem outrageous...

I personally think 3 per cable is just about right, since most caddies hold 3 drives, so it fits rather nicely.

Corsair still get my vote, but nice review Jim

30-04-2009, 16:58:48

kimandsally
Terrific review so nice to see someone be critical of these PSU's honestly it makes me weep when some reviews are so one sided as have so many of this PSU.

I don't recall any other site retesting a off the shelf model and also I might be wrong but no other review picked up on the Sata Molex issue.

Thank goodness that there is somewhere we can come to get a totally unbiased review of what is really just a very good PSU, not a world beating machine that will run for the next millenium and only use 10 pence of electricity like some other sites might try to have us believe.

Thank you for the BEST review of this PSU I've ever seen and I think I "might" have read 98% of them.

30-04-2009, 17:25:55

JN
Cheers for the feedback everyone. KimandSally I'll slip you that 20 next time I see ya lol

Fingers crossed they get the issues sorted. The Galaxy went through a few revisions in its time, so at least Enermax don't seem to be the kind of company to bosh out a product and then put their fingers in their ears until it goes EOL.

I'm quite surprised nowhere else picked up on these things though. Even tho I'm a picky git sometimes, these things were so glaringly obvious.
Reply
x

Register for the OC3D Newsletter

Subscribing to the OC3D newsletter will keep you up-to-date on the latest technology reviews, competitions and goings-on at Overclock3D. We won't share your email address with ANYONE, and we will only email you with updates on site news, reviews, and competitions and you can unsubscribe easily at any time.

Simply enter your name and email address into the box below and be sure to click on the links in the confirmation emails that will arrive in your e-mail shortly after to complete the registration.

If you run into any problems, just drop us a message on the forums.