Corsair RM650e ATX v3.1 PSU Review

Load Regulation

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 3.582A 2.001A 2.006A 1.006A 65.009 84.609% 0 <6.0 46.83°C 0.971
12.121V 4.998V 3.29V 4.969V 76.833 40.05°C 114.84V
20% 8.177A 3.003A 3.012A 1.21A 129.949 89.409% 0 <6.0 49.39°C 0.989
12.113V 4.995V 3.287V 4.961V 145.341 40.71°C 114.81V
30% 13.125A 3.505A 3.516A 1.413A 194.954 90.72% 0 <6.0 51.15°C 0.986
12.106V 4.993V 3.285V 4.954V 214.893 41.36°C 114.78V
40% 18.086A 4.007A 4.021A 1.618A 260.043 91.064% 0 <6.0 53.65°C 0.987
12.099V 4.992V 3.283V 4.945V 285.558 41.77°C 114.76V
50% 22.709A 5.013A 5.031A 1.823A 325.042 90.904% 406 <6.0 42.28°C 0.99
12.089V 4.988V 3.28V 4.937V 357.567 57.13°C 114.74V
60% 27.290A 6.019A 6.043A 2A 389.285 90.531% 501 <6.0 42.78°C 0.991
12.078V 4.985V 3.277V 4.929V 430.002 58.74°C 114.71V
70% 31.951A 7.027A 7.058A 2.236A 454.73 90.027% 612 8.5 43.41°C 0.992
12.068V 4.982V 3.274V 4.92V 505.104 60.09°C 114.69V
80% 36.622A 8.035A 8.072A 2.341A 519.53 89.389% 734 13.4 43.78°C 0.993
12.059V 4.978V 3.27V 4.914V 581.206 61.91°C 114.67V
90% 41.699A 8.542A 8.569A 2.446A 584.979 88.668% 905 20.6 44.52°C 0.994
12.050V 4.975V 3.268V 4.906V 659.739 63.51°C 114.64V
100% 46.517A 9.049A 9.096A 3.071A 649.794 87.893% 1187 30.1 45.51°C 0.994
12.041V 4.973V 3.265V 4.886V 739.309 64.69°C 114.62V
110% 51.216A 10.061A 10.209A 3.073A 714.413 87.039% 1503 36.9 46.83°C 0.994
12.030V 4.969V 3.261V 4.882V 820.801 64.67°C 114.59V
CL1 0.116A 13.292A 13.353A 0A 111.3 83.886% 1112 27.5 43.32°C 0.988
12.107V 4.981V 3.272V 4.993V 132.679 55.75°C 114.81V
CL2 0.115A 20.06A 0A 0A 101.337 82.783% 1110 27.4 41.45°C 0.987
12.109V 4.982V 3.284V 4.996V 122.411 50.09°C 114.81V
CL3 0.114A 0A 20.161A 0A 67.387 76.525% 847 18.5 41.02°C 0.975
12.106V 4.991V 3.273V 4.996V 88.06 49.02°C 114.83V
CL4 53.929A 0A 0A 0A 649.618 88.979% 1247 31.7 44.21°C 0.994
12.046V 4.987V 3.28V 4.97V 730.082 56.35°C 114.63V

Load regulation is within 1% on all major rails.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 15.0 mV 12.4 mV 13.0 mV 12.8 mV Pass
20% Load 17.5 mV 12.6 mV 14.0 mV 13.2 mV Pass
30% Load 19.8 mV 14.0 mV 15.3 mV 13.6 mV Pass
40% Load 21.6 mV 14.7 mV 16.3 mV 15.0 mV Pass
50% Load 21.9 mV 13.5 mV 15.0 mV 15.0 mV Pass
60% Load 21.9 mV 14.6 mV 16.7 mV 15.1 mV Pass
70% Load 21.6 mV 14.8 mV 15.7 mV 15.6 mV Pass
80% Load 23.1 mV 14.5 mV 17.8 mV 15.8 mV Pass
90% Load 29.9 mV 21.0 mV 21.2 mV 20.4 mV Pass
100% Load 38.3 mV 15.3 mV 17.5 mV 19.6 mV Pass
110% Load 40.6 mV 20.6 mV 23.7 mV 21.8 mV Pass
Crossload 1 26.6 mV 14.0 mV 17.7 mV 11.8 mV Pass
Crossload 2 18.7 mV 16.0 mV 14.4 mV 10.5 mV Pass
Crossload 3 16.1 mV 12.7 mV 17.8 mV 10.8 mV Pass
Crossload 4 37.9 mV 14.3 mV 15.0 mV 13.7 mV Pass

Ripple suppression is decent at 12V and pretty good on the rest of the rails.

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10 thoughts on “Corsair RM650e ATX v3.1 PSU Review

  1. Hi! Just came over this excellent review when picking a PSU for my new eGPU setup.
    The enclosure is Razer Core X V2 (TB5) that requires a ATX PSU. The graphics card is a 5080FE. While 5080FE’s TGP is 360W, and the recommended PSU for system is 850W+, for an eGPU it should be significantly lighter so a 650W output is likely to be sufficient.
    However, RM650e has a 300W rated 12V-2×6 cable, which is lower than the 360W TGP. Corsair’s website did not reveal anything related to the 300W bottleneck for RM650e, and this is only mentioned by Cybenetics’ rating and your review. Do you think that this would constitute a bottleneck and safety concern? I know that due to the Thunderbolt bandwidth, I may never really hit a max load (let alone I’m running TB3/USB4 in the short term), but it may still be a concern if TB5 can later reach it. Furthermore, do you think the bottleneck would be on the cable rating or the PSU? If former, then maybe replacing with a 600W rated 12V-2×6 cable can resolve the potential issue…

    1. yes that can be a problem, better get a PSU that is set at 600W, on its 12V-2×6 header. Remember the cable is the same, it is the setting of the PSU’s 12V-2×6 port that does the trick.

  2. Hello Aris, such great work your providing the community! Now that my eyes are open I feel like they should have never hit the market from the beggining, an example is the FSP Vitas, I was about to buy one but was hesitant because you made very explicit about the Yang Loo fan being very weak, so I did some research and Voilá there seems to be an increasing number of people who bought a Vita some months ago now posting videos about fan noise and asking for advice. I mean the Vitas are amazing as far as voltage regulations goes and whatnot, but should a product that is bound to fail shortly after being sold really be put out to the market? It’s not so easy finding a Psu we can trust

    So about this Rme650, the Inrush Currents are really high, will that be an issue or is it good? I’m thinking it might be good due to the new gpus needing very short power spikes but then again I’m not totally familiar with the concept and also your graph states that Lower is Better, pls if you can take the time to briefly elaborate I’d be very welcome! Seems like Corsair adopted Cybenetics approved test so cheers on that

    1. Hi! High inrush currents are not good, but it is not easy, at all, to completely drain the bulk cap(s) as we do. High inrush current means that with a completely drained bulk cap, the PSU asks for way to much power, which can even trip the electrical relay connected to the AC socket. As for YL fans, they are hit and miss unfortunately. Really bad idea from FSP to use them and I told them to switch ASAP to something better.

      1. I get it now! So my lack of in depth electrical knowledge assumes it shouldn’t be a problem unless the bulk caps go bad or the psu is disconnected from the ac plug for a very long time? For high inrysh currents psu would it be better prior to the 1st ever use to plug her to ac power and turn the On switch for the bulk capacitors to fill up??

        Also, I’m thinking of getting this Rme650 to go with a 330 TDP gpu (7800 xt overclocked) and 65W ryzen 7600, for a total of 450W, just 2 quick questions please:
        -Do you think if in the future If I go for something like a 9800x3d while keeping a ~300W TDP gpu it would be problematic?
        -Also, this psu only comes with 1x “12v-6×2 to 2x8pin” cable, but it’s only rated for 300W, isn’t this a problem for a 330W gpu? I think it’s my only way of connecting the gpu with this cable… because the psu only has 2x8pin Cpu/Pcie connections so I need 1 for Cpu and I don’t know if I should connect the gpu (which has 2x8pin) to only 1x8pin on the psu.

        1. 1) 9800X3D has low power consumption so even with a 300W GPU this PSU will be ok
          2) If the GPU needs 330W then it will probably won’t work with the 300W set 12V-2×6

          1. Thank you Aris! I actually ended up going with your suggestion “you can get one of the best mid-capacity PSUs available in today’s market, the RM750x (ATX v3.1), so consider this, too” and I already have a Ryzen 7700 with me and waiting on a Palit 5070 Ti. So my plans sidetracked completely and ended up getting a different Psu, Cpu, Gpu. Ahahahah
            Is there a Paypal where I could buy you a beer?
            Much *more* success to you and your team Aris, thanks for the help!

  3. Speaking about Corsair …
    I own rm 1000x 2024
    Rtx 4090 super (right now)
    Ryzen 9800x3d
    For future Rtx 5090 is good way to go ? This psu will handle it ? I searched whole psu’s models on your side and I’m looking for sleeved cabled / individually so u pick this one.

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