EVGA SuperNOVA 1000 G7 Power Supply Review

The EVGA SuperNOVA 1000 G7 is tiny in dimensions but is powerful, offering top performance.

EVGA SuperNOVA 1000 G7
(Image: © Tom's Hardware)

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Protection Features

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

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OCP (Cold @ 25°C)12V: 99A (118.84%), 12.170V
5V: 31A (129.17%), 5.133V
3.3V: 30.1A (125.42%), 3.354V
5VSB: 4.2A (140%), 5.022V
OCP (Hot @ 41°C)12V: 97.2A (116.67%), 12.195V
5V: 29.2A (121.67%), 5.140V
3.3V: 28.5A (118.75%), 3.366V
5VSB: 4.3A (143.33%), 5.023V
OPP (Cold @ 24°C)1291.64W (129.16%)
OPP (Hot @ 44°C)1258.75W (125.88%)
OTP✓ (156°C @ 12V Secondary Side)
SCP12V to Earth: ✓
5V to Earth: ✓
3.3V to Earth: ✓
5VSB to Earth: ✓
-12V to Earth: ✓
PWR_OKProper Operation
Inrush: NTC Thermistor & Bypass Relay

OCP and OPP are set correctly. Lastly, the other protection features are present and work properly. 

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.

No problems here since the 3.3V rail is always lower than the other two. 

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

Efficiency Graph

(Image credit: Tom's Hardware)

Ripple Graphs

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

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 Fluke Ti480 PRO camera able to deliver an IR resolution of 640x480 (307,200 pixels).

The main transformer and the vertical board holding the 12V FETs are the hottest parts. All in all, the temperatures on all parts are kept in control during this test. 

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Contributing Editor

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

  • Co BIY
    Another great review.

    Are there cost reductions in making a physically smaller power supply ?

    I hope we get to see a review of the Chieftronic Powerplay. It's putting up some interesting numbers.