Enermax MODU87+ 700w PSU Review

Simulated Load Results (Advanced)

The following results below represent the 'worst-case' output of the Enermax MODU87+ 700w PSU during a 1 hour testing period. Recording of these results was conducted using a SunMoon SM268+ load tester connected to a PC via RS232, a Fluke 50 Series II thermometer and a Rigol 25Mhz 400MSa/s oscilloscope inside a custom made heat chamber capable of maintaining a 50ºC ambient with a variation of less than 5%.

Enermax MODU87+ 700w @ 50°C
   +3.3v  +5.0v  +12v  +5vSB  -12v  AC Watts /
 DC Watts
 Efficiency  Intake /
Δ Temp
3.25A 3.25A 11.50A 0.75A  0.12A 187w /
92.51% 50.1°C /
3.39v 5.05v 12.20v 5.16v  -12.12v
7.50A 7.50A 23.00A 1.50A  0.25A  350w /
92.63%  51.7°C /
3.33v 5.00v 12.12v 5.09v  -12.28v
11.25A 11.25A 34.50A 2.25A  0.37A  571w /
 91.94% 50.5C /
3.27v 4.94v 12.08v 5.03v -12.44v
15.00A 15.00A 46.00A 3.00A 0.50A 777w /
89.70%  51.8°C /
3.23v 4.88v 12.04v 4.97v -12.62v
16.00A 16.00A 1.00A 0.00A 0.00A 167w /
85.62% 51.5°C /
4.4 °C
3.27v 4.93v 12.20v 5.17v -13.21v
 1.00A  1.00A  58.00A  0.00A  0.00A 766w /
92.16%  50.8°C /
3.36v 5.02v 12.04v 5.12v -13.33v
 17.00A 17.00A 58.00A  3.00A  0.50A 946w /
90.16%  51.1°C /
3.19v 4.85v 12.00v 4.94v -12.94v

To reiterate what's already been said over on the previous page, the MODU87+ shows excellent voltage stability on the +12v rail across all loads including the cross-load and max load tests. The +3.3v and +5v rails also manage to hold good voltages through tests 1-4, and only really trip up in the max load test.

Efficiency is among the best we've ever seen with the unit averaging around ~90%. Even in test 5 where most PSU's barely manage to achieve 80%, it pumped out a respectable 85%.

Temperatures are also under control for the most part with the exhaust temp only rising 10.7°C above the 51.8°C ambient temperature during test4. Only in test 7 where the MODU87+ was running 150w above its rated output did the unit start to loose control with the exhaust temp hitting 71.7°C, but this is to be expected as Enermax have most likely only tuned the fan control to deal with loads of up to 700w.

Enermax MODU87+ 700w Scope Results @ 50c
   +3.3v  +5.0v  +12v

Moving on to the ripple results now, and the first thing that shows up is just how good the suppression on the +5v rail is. Seriously, the flat line across all of the tests would have paramadics administering epinephrine in an attempt to bring it back to life. For some reason though, the +3.3v rail doesn't share this trait, and instead sits between 20-30mVpp through the testing. Of course, this is by no means a poor result. But with both rails using exactly the same VRM's I do have to wonder why.

The +12v rail is yet another interesting (yet boring) result because much like the +5v rail, it hardly changes regardless of the load. Test1 is the same as Test4. Everything in between is pretty much the same. And the Max load result taken at 850w is only 4mVpp higher than at 170W!

Now let's try and cobble together some form of conclusion...

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Most Recent Comments

25-03-2010, 21:12:09

Just been doing my weekly catch up of reviews and figured I'd give this a little read.

Top quality review as always Jimbo.

I never had any issue with the data in its table form myself, but for those that do, the graphs are layed out very well and extremely clear so you've hit the nail on the head there too.

As for the PSU... Hmm. Yeah it looks ummm odd shall we say but the efficiency is top notch.

Still don't think I'll be swapping out my HX750 anytime soon.

Oh yeah, and I'm not quite sure why this hasn't had any replies either :S.Quote

26-03-2010, 03:15:01

Cheers for breaking the ice fella Quote

26-03-2010, 10:18:51

I kept quiet cos that fan looks like it belongs in a Las Vegas hookers handbag! Results were very good though.

I dont think Ive ever seen an enermax that didnt have some kind of quirk in the styling though, the revolution for instance was ruined by the dodgy braiding.Quote

03-01-2011, 20:29:00

Originally Posted by tinytomlogan View Post

I kept quiet cos that fan looks like it belongs in a Las Vegas hookers handbag! Results were very good though.

I dont think Ive ever seen an enermax that didnt have some kind of quirk in the styling though, the revolution for instance was ruined by the dodgy braiding.
Funny since they do a vegas range of fans http://www.enermax.co.uk/apollishvegas.html?L=2Quote

03-01-2011, 22:46:05

nice review dude, ive never actually paid much attention to enermax, this gives me a bit of insight and will likely notice them in the streets when im out...Quote

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