EVGA 750 B3 PSU Review

Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the 750 B3's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load7.0mV6.5mV11.4mV14.0mVPass
20% Load9.2mV6.6mV11.2mV14.3mVPass
30% Load9.3mV7.5mV11.0mV13.8mVPass
40% Load10.6mV8.4mV11.7mV14.6mVPass
50% Load11.4mV10.2mV12.2mV15.2mVPass
60% Load13.0mV10.1mV13.7mV15.6mVPass
70% Load13.0mV11.4mV14.4mV17.8mVPass
80% Load13.8mV11.5mV14.9mV17.8mVPass
90% Load14.9mV13.2mV16.6mV21.8mVPass
100% Load17.2mV16.7mV18.0mV27.3mVPass
110% Load17.3mV17.0mV18.6mV29.8mVPass
Cross-Load 18.9mV8.5mV9.7mV11.9mVPass
Cross-Load 217.0mV14.7mV16.4mV25.0mVPass

EVGA's ripple suppression is excellent! Only the 5VSB rail has room for improvement, though for this rail's standards, a less-than 30mV worst-case measurement is still considered fine.

Ripple Oscilloscope Screenshots

The following oscilloscope screenshots illustrate the AC ripple and noise registered on the main rails (+12V, 5V, 3.3V and 5VSB). The bigger the fluctuations on the screen, the bigger the ripple/noise. We set 0.01 V/Div (each vertical division/box equals 0.01V) as the standard for all measurements.

Ripple At Full Load

Ripple At 110-Percent Load

Ripple At Cross-Load 1

Ripple At Cross-Load 2

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  • Dark Lord of Tech
    Several complaints in the forums from builders , very disappointed with the B3 series.
  • logainofhades
    Yea, I will no longer recommend a B3 series PSU. Seasonic and Corsair's new CX450m-650m are better options right now.
  • SinxarKnights
    The solder quality between review samples and retail samples is pretty shady in of itself IMO.
  • 10tacle
    The fact that EVGA hasn't even responded to the 450W B3 fail test that was back in August is highly disturbing in an of itself. It is inexcusable to just ignore a tech website's inquiry (and serious concerns) as to why a series of their products are failing. I know EVGA's customer support is top notch in the industry (I've had to use it), but their public/customer relations team needs an overhaul. If I were the CEO, I'd be calling for some heads and light a fire under some backsides to ride Super Flower hard for a fix.
  • maxwellmelon
    with out them identifying the failed component how can they say that the PSU not turning back on after a OPP is not intentional setup because it being shut down at 120% of load is about right like they said. It could be designed that way as a safety feature. and a way to sell more psu because when you try to RMA it they can say you overloaded it and is not covered. Operating above 750 watts is above the psu limits and having a one time OPP shut down is still technically having OPP on it.
  • Aris_Mp
    When a PSU is broken after OPP's triggering, it is not a feature but a problem. OPP along with the rest of the protections is there to protect the PSU in order not to break when a user goes wild with it.
  • Lutfij
    The third paragraph of the last page reminded me of what cars with all souped up aftermarket parts but a crappy driver often results with - disaster.

    EVGA Have recently come under flack on other forums as well and their response isn't, erm, admirable. Nice work with the review, Aris, keep it up!
  • rtansey378
    They must be having issues in the CS department. After dealing with them for an RMA I found their website to be down totally twice and fundamentally broken in important other areas during RMA submission. I was getting different answers from different people to basic questions and there were unreturned emails that led to other issues - it was kind of a nightmare overall that went on for a month. Even after being expedited to a manager of some type it wasn't much better. And their 2-3 advance RMA uses UPS ground so it is not 2-3 days at all. It routinely takes them 3 days to get the replacement into UPS' hands and then UPS takes their sweet time. People also use their expensive desktop PCs for work. I went through that twice as they sent the wrong unit back the first time.

    They charge a premium largely on their CS reputation. I guess they are now hoping people won't have to use it and learn otherwise. Being branded as a good guy in the CS is huge. Being branded as a bad guy is a death sentence. You'd think they would at least return major website emails and spin use some good old corporate spin. They won't even do that. Makes you wonder.

    I hope they figure it out. But Im no longer going to pay their premium. If they have the cheaper product then I would still consider them. That will rarely be the case. They did some nice patented stuff with their GTX 1070/1080 revisions so maybe they are putting all their eggs in that basket.
  • mlee 2500
    Wow, I expect better from something EVGA puts their name on.

    THANK YOU tom's HARDWARE for performing objective tests on multiple samples to keep us informed and the vendors honest....

    I seriously could have seen myself buying my next PSU based on EVGA's reputation alone. I won't make that that mistake now.