EVGA SuperNOVA 750 G5 Power Supply Review

Reviews
By Aris Mpitziopoulos
published

The SuperNOVA 750 G5 is fully modular, compact, and promises for high performance. Will it be able to meet the popular Corsair and Seasonic offerings though?

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Protection Features

Check out our PSUs 101 article to learn more about PSU protection features.

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Protection Features
OCP12V: 75.2A (120.32%), 12.036V 5V: 27A (112.5%), 4.931V 3.3V: 29A (120.83%), 3.291V 5VSB: 6.2A (206.67%), 4.911V
OPP1013.95W (135.19%)
OTP✓ (170°C @ 12V heat sink)
SCP12V: ✓ 5V: ✓ 3.3V: ✓ 5VSB: ✓ -12V: ✓
PWR_OKProper Operation
NLO✓
SIPSurge: MOV Inrush: NTC Thermistor & Bypass Relay

The OCP triggering points at +12V, 5V and 3.3V are reasonable set. The 5VSB rail's OCP is configured high, but there are no issues even at 6.2A. Finally, the over power protection is a bit higher than we would like to see; still, the platform looks to handle this fine.

DC Power Sequencing

According to Intel’s most recent Power Supply Design Guide (revision 1.4), the +12V and 5V outputs must be equal to or greater than the 3.3V rail at all times. Unfortunately, Intel doesn't mention why it is so important to always keep the 3.3V rail's voltage lower than the levels of the other two outputs.

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No problems here.

Cross Load Tests

To generate the following charts, we set our loaders to auto mode through custom-made software before trying more than 25,000 possible load combinations with the +12V, 5V, and 3.3V rails. The deviations in each of the charts below are calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature during testing was between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

Load Regulation Charts

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Efficiency Chart

Ripple Charts

The lower the power supply's ripple, the more stable the system will be and less stress will also be applied to its components.

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Infrared Images

We apply a half-load for 10 minutes with the PSU's top cover and cooling fan removed before taking photos with a modified FLIR E4 camera able to deliver an IR resolution of 320x240 (76,800 pixels).

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The temperatures at the internals are at normal levels, given the applied conditions, so we see no reason to use such an aggressive fan profile. Most likely FSP's engineers wanted to make sure that the PSU will outlive its extended warranty.

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Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.

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15 Comments Comment from the forums
  • Dark Lord of Tech
    Not a Leadex platform , can't really compete with the others.
    Reply
  • Yuniel
    Hello Aris , you still recommened the g3 ? , beacuse aparently is in tier Tier D - Not recommended https://linustechtips.com/main/topic/1116640-psu-tier-list-40-rev-103/ , beacuse of OPP , the 850 g3 is good PSU for high end PC gaming ?
    Reply
  • mossberg
    Yuniel said:
    Hello Aris , you still recommened the g3 ? , beacuse aparently is in tier Tier D - Not recommended https://linustechtips.com/main/topic/1116640-psu-tier-list-40-rev-103/ , beacuse of OPP , the 850 g3 is good PSU for high end PC gaming ?

    That list is a joke.
    Reply
  • agentlaidlaw
    Yuniel said:
    Hello Aris , you still recommened the g3 ? , beacuse aparently is in tier Tier D - Not recommended https://linustechtips.com/main/topic/1116640-psu-tier-list-40-rev-103/ , beacuse of OPP , the 850 g3 is good PSU for high end PC gaming ?
    linus forums are spreading fear mongering. they use toms own reviews about the G3 series as their reasoning while simultaneously ignoring toms still recommendation for it IN THOSE SAME REVIEWS. they all of a sudden don't care about the authors opinion. they pick and choose what they want to hear and spread misinformation and instill paranoia and fear mongering into people. and also flat-out ignore jonnyguru reviews for it as well. while simultaneously using jonny's reviews for recommending other power supplies.

    do yourself a favor and ignore that dumb list. the guy who took control of it is going on a fear mongering spree and has admitted hes basing everything off his own opinion rather than facts. he doesn't like single rails and telling people single rails will blow up on them if you use them in units past 600 watts or so. he's not correcting users going around on that forum stating single rails don't support ocp / opp. he's spreading misinformation about a plethora of power supplies, hes ranking power supplies that are objectively worse over nitpicking stuff. like the g3 opp that's only a concern if you ARE ALREADY PUSHING THE POWER SUPPLY BEYOND ITS RATED SPEC NO MATTER WHAT EVEN WITH GOOD OPP YOU WILL STILL HAVE PROBLEMS IN THOSE SCENARIOS OVER TIME OF CONSTANT PUSHING OVER SPEC.

    sorry for my rant but linus power supply tier has been the worse thing to come about in the community.
    Reply
  • Dark Lord of Tech
    I never ever base my recommendations on a lame tier list.
    Reply
  • WigitMigit
    Could I download evga's software and adjust the fan curve to deal with the loud fan issue? Or does their software not work with the g5 lineup
    Reply
  • TJ Hooker
    WigitMigit said:
    Could I download evga's software and adjust the fan curve to deal with the loud fan issue? Or does their software not work with the g5 lineup
    What software are you referring to? I've never heard of software that lets you change your PSU fan profile, except for Corsair link (which only works with a few of their high end PSUs).
    Reply
  • WigitMigit
    TJ Hooker said:
    What software are you referring to? I've never heard of software that lets you change your PSU fan profile, except for Corsair link (which only works with a few of their high end PSUs).
    https://www.evga.com/supernova/
    Reply
  • TJ Hooker
    WigitMigit said:
    https://www.evga.com/supernova/
    Interesting, didn't realize EVGA had something similar. But it looks like it works only with that one PSU model from ~7 years ago, guess it's not too surprising I hadn't heard of it.
    Reply
  • VTEC_Inside
    There is an issue with this review IMO.

    Active Clamp Reset Forward designs characteristically hold steady voltages better.

    The criticism regarding transient response is flawed in that it is not tested the way that people are actually going to use the things, ie with the caps in place.

    While I'm sure no one is stamping an official seal of approval on PSUs, I'd imagine they'd be ripped on pretty hard if it didn't actually adhere to ATX specifications.

    Evga's marketing wank goes on about the higher quality capacitors on the output board. A more useful test, IMO, would be to test that transient response under conditions that people are actually using the thing. Given that it only slightly failed this testing methodology without the caps, I'm left to believe that it would do just fine tested in a real world situation.
    Reply