AC Ripple and Noise on the DC Outputs
The amount of AC ripple and noise present on the DC outputs was checked using a digital oscilloscope. This AC component may be present in the KHz range where most switching power supplies operate or it may be more prevalent at the 60 Hz line frequency. We adjust the O-scope time base to look for AC ripple at both low and high frequencies. The ATX12V V2.2 specification for DC output noise/ripple is defined in the ATX12V Power Supply Design Guide.
Ideally we would like to see no AC ripple (repetitive) or noise (random) on the DC outputs – the cleaner the better! But in reality there will always be some present. I measured the amplitude of the AC signal (in millivolts, peak-to-peak) to see how well the power supply complied with the ATX standard. The following table lists the ripple/noise results during all of the load tests for the main output voltages of interest.
SuperNOVA 650 P2:
The 650W P2 power supply exhibited outstanding AC ripple suppression on all of the primary outputs, all the way up to full load.
SuperNOVA 750 P2:
The results for the 750W P2 power supply were also just outstanding!
I can add to the list of
I can add to the list of disadvantages: extremely rigid cabling and very tight connectors (caution is advised with Molex in particular). I have first hand experience with EVGA PSUs and while great as a PSU box little details make them highly questionable purchase. Included cabling for example is by miles more flexible with Corsair. Best thing you can do is to buy cable set from CableMod (not EVGA). You will see then how cables should be made for such premium priced PSU.
Perhaps smaller models have different fans, but I can certainly say that EVGA fans are loudest I’ve heard in a long time – again Corsair is top of the pick for quiet. Noise from 1000 P2 or 1200 P2 dwarfs multiple HDD arrays and ~20 fans in each system. Ecomode is all nice, but its sole purpose is to shut the racket from cooling fan.
Big EVGA fan, but they shouldn’t just auto-copy Leadex/SuperFlower without any improvements.
Also an EVGA fan- and my main
Also an EVGA fan- and my main selling point is the 10 year warranty. PSUs at these ratings with this warranty at this price are a bargain AFAIC. You are into boutique-ville after this.
I would also like to see smarter PSUs. Cabling is not that big of an issue with me and I love modular designs where I don’t have to figure out where to put the excess cables any more. The EVGA I have is not noisy at all.
In all, this review agrees with what I’ve seen. It has been a great product to me so far.
With such low ripple-
Do the
With such low ripple-
Do the cables have in-built caps???????????????
Something one might want to test sometime-
Does a extremely low ripple PSU like this have any
significant benefit for on-board audio compared to
a cheaper noisier PSU?????????????????
Edit: Yes, small capacitors
Edit: Yes, small capacitors are built into the ends of the CPU and VGA cables – under the heat shrink. The 650W PSU has one CPU cable with both a 4+4 pin and 8 pin connector. The 750W PSU comes with two CPU cables, one with an 8-pin connector and the other with a 4+4 pin connector.
JG must have a slightly
JG must have a slightly different model to you-his has
capacitors in cables-looks the same.
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story2&reid=446
Yes, you are correct (and I
Yes, you are correct (and I was wrong). I have edited the response above – thanks for pointing it out!
What about the torture load?
What about the torture load? Did you guys check it on how much torture load it can handle. Because that will give the most accurate idea about how much power supply it can sustain through. Please do the torture load test. I have been asked this question by one of my blog readers where I reviewed this power supply. you can see here (https://www.glinkster.com/best-power-supply-for-gaming/)
One thing more I don’t like about this power supply which I also mentioned in my review is the plastic connectors on one end are split while the other end is not. Apart from that, it is a great looking power supply and it simply amaze me with its low noise. And yes I agree, the 10 year warranty is the main selling point in this PSU.