MSI MAG A850GL PCIE5 850W 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% 5.217A 2A 2.019A 0.986A 85 87.597% 1119 28.8 40.05C 0.957
12.153V 5V 3.269V 5.07V 97.034 44.14C 114.82V
20% 11.447A 3.002A 3.031A 1.186A 169.936 90.641% 1123 28.9 40.75C 0.977
12.147V 4.997V 3.267V 5.059V 187.48 45.10C 114.79V
30% 18.031A 3.503A 3.538A 1.387A 254.948 91.402% 1124 29.0 41.33C 0.981
12.140V 4.995V 3.265V 5.046V 278.932 45.99C 114.76V
40% 24.628A 4.006A 4.045A 1.59A 340.04 91.495% 1130 29.2 41.79C 0.978
12.134V 4.993V 3.263V 5.033V 371.646 46.84C 114.74V
50% 30.868A 5.009A 5.06A 1.793A 424.857 91.129% 1133 29.4 42.31C 0.977
12.127V 4.992V 3.261V 5.02V 466.215 47.78C 114.7V
60% 37.090A 6.012A 6.075A 1.998A 509.365 90.64% 1139 29.5 42.69C 0.979
12.121V 4.99V 3.259V 5.007V 561.963 48.76C 114.68V
70% 43.383A 7.017A 7.092A 2.203A 594.674 90.001% 1143 29.6 43.11C 0.981
12.115V 4.988V 3.257V 4.993V 660.745 50.17C 114.64V
80% 49.693A 8.023A 8.112A 2.309A 679.516 89.092% 1679 40.3 43.75C 0.982
12.107V 4.985V 3.254V 4.982V 762.71 51.83C 114.61V
90% 56.426A 8.531A 8.613A 2.414A 765.015 88.172% 2383 48.2 44.09C 0.983
12.096V 4.982V 3.251V 4.971V 867.639 53.13C 114.58V
100% 63.058A 9.035A 9.139A 2.521A 849.7 87.329% 2379 48.2 45.04C 0.985
12.092V 4.98V 3.25V 4.959V 972.994 55.09C 114.55V
110% 69.444A 10.043A 10.253A 2.525A 935.088 86.279% 2382 48.2 46.95C 0.986
12.087V 4.978V 3.248V 4.95V 1083.803 57.91C 114.51V
CL1 0.115A 13.278A 13.424A 0A 111.304 83.207% 1155 29.9 42.00C 0.972
12.161V 4.986V 3.255V 5.084V 133.771 47.48C 114.81V
CL2 0.114A 20.031A 0A 0A 101.341 81.293% 1159 29.9 41.21C 0.972
12.166V 4.99V 3.269V 5.089V 124.662 48.30C 114.82V
CL3 0.114A 0A 20.264A 0A 67.386 75.904% 1131 29.3 40.33C 0.958
12.163V 5V 3.257V 5.089V 88.779 49.42C 114.83V
CL4 70.224A 0A 0A 0A 849.566 88.212% 2393 48.3 45.98C 0.985
12.099V 5V 3.269V 5.027V 963.099 56.96C 114.56V

Load regulation is within 1% on all rails, so it is tight enough.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 17.1 mV 11.6 mV 13.1 mV 7.8 mV Pass
20% Load 20.7 mV 10.8 mV 12.0 mV 11.3 mV Pass
30% Load 23.5 mV 11.7 mV 13.6 mV 12.7 mV Pass
40% Load 21.6 mV 12.0 mV 13.9 mV 11.2 mV Pass
50% Load 14.4 mV 10.9 mV 12.1 mV 10.8 mV Pass
60% Load 13.5 mV 10.9 mV 12.2 mV 13.8 mV Pass
70% Load 14.9 mV 10.5 mV 12.5 mV 17.5 mV Pass
80% Load 16.0 mV 13.0 mV 14.4 mV 9.7 mV Pass
90% Load 17.4 mV 13.8 mV 15.0 mV 13.6 mV Pass
100% Load 27.6 mV 13.8 mV 16.0 mV 15.2 mV Pass
110% Load 26.8 mV 13.9 mV 16.2 mV 15.9 mV Pass
Crossload 1 29.6 mV 12.7 mV 14.5 mV 7.0 mV Pass
Crossload 2 20.1 mV 19.9 mV 16.1 mV 8.7 mV Pass
Crossload 3 18.8 mV 12.3 mV 18.8 mV 7.3 mV Pass
Crossload 4 25.1 mV 11.7 mV 14.8 mV 9.9 mV Pass

Ripple suppression is good on all rails.

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22 thoughts on “MSI MAG A850GL PCIE5 850W PSU Review

  1. Is there explanation and images for Fan Noise for 230V, like the explanation and images for 115V?

    I am seeing only the overal table comparison (between different PSUs) for Average Fan Noisee for 230V AC Input.

    1. Sorry, I only provide the fan noise map for 115V because, typically, it is the worst-case scenario. Noise at 230V is lower in most PSUs.

      1. Thank you for your response.

        If you can publish the charts and explanation for the results for the 230V, that will be very helpful for me.

        I use 230V AC Input, and i use this PSU.

        At the begining was everithing OK, but after three monhts my PC produce much more noise.
        And this noise is produced during the PC start and continue in light CPU Usage (CPU Usage < 20% and CPU Temperature < 40 grad Celsius)

        I can monitor the CPU FANS RPMs, but I am not able to monitor the RPMs for the PSU FAN.

        Is somehow possible that the PSU Fans have maximum RPMs during PC start and in light CPU Usage? (Without any reason).

        Thank you in advance for your your response.

  2. Could you have a problem with the MAG A850GL? Is it possible that you have technical failures? Or is it of good quality? Would it work for me with an RTX4070? … sorry for so many questions and again thank you very much for your help

  3. Podría tener algún problema con la MAG A850GL? Es posible que tenga fallas técnicas? O es de buena calidad? Me serviría con una RTX4070?… perdon por tantas preguntas y nuevamente muchas gracias por tu ayuda

  4. My hardware is: b450 aorus elite v2, ryzen5 5600x , rtx 3060ti. and I’m considering the msi Mag A850GL at 89USD, but I’m not sure if it’s a good option, or if it’s better to buy another one. Could you help me with your advice? thank you very much

      1. Could i have a problem with the MAG A850GL? Is it possible that you have technical failures? Or is it of good quality? Would it work for me with an RTX4070? … sorry for so many questions and again thank you very much for your help

    1. This is with a 90V input at full load and high temperatures >40C. The PSU’s power spec table says 100-240V. It doesn’t say 90V, so you operate the PSU out of spec if you do that. I don’t agree with 90V testing, and this is why I restrict it to 100V.

      MANY PSUs fail under the same scenario, not only the GPX platform.

      1. Thank you for your response

        Since 120v is within spec, It would be okay to use the A850GL and any CWT GPX based power supply in north america and 120v-based Regions, Right? it wouldn’t face any issues – just to confirm

        I appreciate your input, thanks again for all the effort.

          1. I know I am saying this for the fourth time – But thanks again.

            Your reviews have been a huge ton of help for many people, Its really great to have someone as proffesional to review, help and interact with others like this.

            And sorry for the slightly late response.

  5. Hi, Thank you so much for your reviews – I appreicate the effort.

    I’ve wanted to ask about something regarding CWT GPX based PSU’s in 120v Regions, According to Cultists PSU tier list, =>750W CWT GPX based units apparently have issues in 120v regions and whatnot?.

    Regardless, Cultists’s list has not been updated in a while, And they do not have the A-GL in the tier listing, So i’d like you to ask you about it, Is theres any problems with CWT GPX based units in 120v regions and did you face any issues with the A850GL on the 120v rail in general?. Thanks.

  6. Hi there, i have a question i know the anwser but i want to ask you, the A850 is very cheap now like under 100 Euros, and the SuperFlower 1000w XP is 180e. The construction, quality is very different? Should i go for the Super, or the A850 is enough? i have a system of 550W, and i will buy a new gpu from the 5000 series. Thank you!

    1. Well, I know this is problably the type of questions you really don’t like to answer, but I’ll be most probably changing 6750 XT to 7700 XT in the shopping list, hence budget for the PSU gets lower… What would be the cheapest 700W+ PSUs I could get and would still be decent? I would prefer semi-modular or modular.

  7. Hi, glad to find review of this one, thanks! If you were to choose between:
    a/ Thermaltake GF A3 850W for 115 EUR
    b/ MSI MAG A750GL PCIE5 for 98 EUR
    which one would you choose? The PC is i7-11700 + RX 6750 XT.

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