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% | 5.231A | 1.987A | 1.982A | 0.986A | 85.008 | 88.051% | 714 | 11.4 | 40.3°C | 0.98 |
| 12.121V | 5.034V | 3.331V | 5.071V | 96.544 | 41.61°C | 114.89V | ||||
| 20% | 11.477A | 2.984A | 2.977A | 1.185A | 169.959 | 91.665% | 716 | 11.3 | 40.7°C | 0.983 |
| 12.115V | 5.028V | 3.326V | 5.062V | 185.412 | 41.7°C | 114.86V | ||||
| 30% | 18.075A | 3.483A | 3.477A | 1.385A | 254.967 | 92.514% | 718 | 11.4 | 41.03°C | 0.989 |
| 12.111V | 5.025V | 3.322V | 5.053V | 275.597 | 43.13°C | 114.83V | ||||
| 40% | 24.686A | 3.983A | 3.977A | 1.586A | 340.052 | 92.63% | 721 | 11.9 | 41.76°C | 0.993 |
| 12.106V | 5.022V | 3.319V | 5.044V | 367.111 | 44.5°C | 114.8V | ||||
| 50% | 30.937A | 4.983A | 4.978A | 1.788A | 424.869 | 92.369% | 724 | 12.2 | 42.21°C | 0.995 |
| 12.101V | 5.018V | 3.315V | 5.034V | 459.965 | 46.41°C | 114.77V | ||||
| 60% | 37.174A | 5.985A | 5.982A | 1.99A | 509.415 | 92.034% | 726 | 12.4 | 42.6°C | 0.996 |
| 12.095V | 5.013V | 3.31V | 5.025V | 553.513 | 47.68°C | 114.74V | ||||
| 70% | 43.477A | 6.988A | 6.989A | 2.193A | 594.734 | 91.562% | 729 | 12.9 | 43.15°C | 0.997 |
| 12.089V | 5.009V | 3.306V | 5.016V | 649.545 | 49.45°C | 114.7V | ||||
| 80% | 49.788A | 7.99A | 7.998A | 2.297A | 679.545 | 90.954% | 732 | 13.4 | 43.87°C | 0.997 |
| 12.084V | 5.005V | 3.301V | 5.007V | 747.134 | 52.73°C | 114.67V | ||||
| 90% | 56.500A | 8.495A | 8.492A | 2.4A | 764.967 | 90.3% | 961 | 20.2 | 44.7°C | 0.998 |
| 12.079V | 5.002V | 3.297V | 4.999V | 847.145 | 53.82°C | 114.65V | ||||
| 100% | 62.956A | 9.002A | 9.017A | 3.01A | 849.778 | 89.573% | 1164 | 26.6 | 45.16°C | 0.998 |
| 12.073V | 4.998V | 3.294V | 4.983V | 948.694 | 55.3°C | 114.6V | ||||
| 110% | 69.284A | 10.012A | 10.126A | 3.014A | 934.362 | 88.795% | 1363 | 31.7 | 46.14°C | 0.998 |
| 12.068V | 4.993V | 3.289V | 4.976V | 1052.272 | 57.49°C | 114.57V | ||||
| CL1 | 0.116A | 14.422A | 14.456A | 0A | 121.293 | 85.467% | 731 | 13.4 | 40.02°C | 0.986 |
| 12.115V | 5.005V | 3.3V | 5.079V | 141.921 | 45.18°C | 114.86V | ||||
| CL2 | 0.114A | 21.941A | 0A | 0A | 111.308 | 83.441% | 725 | 12.3 | 40.15°C | 0.988 |
| 12.117V | 5.01V | 3.317V | 5.084V | 133.396 | 44.46°C | 114.87V | ||||
| CL3 | 0.114A | 0A | 21.995A | 0A | 73.995 | 78.33% | 724 | 12.2 | 40.14°C | 0.98 |
| 12.119V | 5.026V | 3.301V | 5.085V | 94.468 | 44.49°C | 114.88V | ||||
| CL4 | 70.350A | 0A | 0A | 0A | 849.658 | 90.094% | 1016 | 22.3 | 45.21°C | 0.998 |
| 12.078V | 5.021V | 3.316V | 5.04V | 943.072 | 56.95°C | 114.61V |
Load regulation is within 1% at 12V and 5V, but loose at 3.3V. It is improved at 12V, which is the most crucial rail. The same was true for the 1000W model compared to the previous one.
| Test | 12V | 5V | 3.3V | 5VSB | DC/AC (Watts) | Efficiency | Fan Speed (RPM) | PSU Noise (dB[A]) | Temps (In/Out) | PF/AC Volts |
| 20W | 1.224A | 0.496A | 0.495A | 0.196A | 20.001 | 75.005% | 0 | <6.0 | 41.08°C | 0.819 |
| 12.130V | 5.039V | 3.336V | 5.092V | 26.665 | 36.69°C | 114.9V | ||||
| 40W | 2.696A | 0.695A | 0.693A | 0.295A | 40 | 83.707% | 0 | <6.0 | 42.16°C | 0.932 |
| 12.125V | 5.039V | 3.336V | 5.089V | 47.786 | 37.12°C | 114.89V | ||||
| 60W | 4.168A | 0.893A | 0.891A | 0.393A | 59.999 | 87.245% | 0 | <6.0 | 44.51°C | 0.964 |
| 12.125V | 5.038V | 3.335V | 5.085V | 68.772 | 38.53°C | 114.88V | ||||
| 80W | 5.635A | 1.092A | 1.089A | 0.492A | 79.951 | 88.812% | 0 | <6.0 | 47.24°C | 0.978 |
| 12.124V | 5.037V | 3.333V | 5.082V | 90.025 | 39.63°C | 114.88V |
A glance at the light loads table is always useful, as the PSU will typically operate at light loads.
Ripple Suppression
| Test | 12V | 5V | 3.3V | 5VSB | Pass/Fail |
| 10% Load | 28.4 mV | 13.8 mV | 14.7 mV | 14.9 mV | Pass |
| 20% Load | 27.0 mV | 13.4 mV | 14.6 mV | 16.0 mV | Pass |
| 30% Load | 31.0 mV | 13.9 mV | 22.2 mV | 16.3 mV | Pass |
| 40% Load | 24.1 mV | 13.5 mV | 14.0 mV | 15.8 mV | Pass |
| 50% Load | 24.5 mV | 13.8 mV | 14.7 mV | 17.2 mV | Pass |
| 60% Load | 25.7 mV | 14.4 mV | 15.3 mV | 18.6 mV | Pass |
| 70% Load | 25.9 mV | 14.0 mV | 15.0 mV | 19.6 mV | Pass |
| 80% Load | 26.9 mV | 14.4 mV | 16.0 mV | 20.5 mV | Pass |
| 90% Load | 27.3 mV | 14.2 mV | 14.9 mV | 20.8 mV | Pass |
| 100% Load | 27.3 mV | 13.7 mV | 14.8 mV | 23.2 mV | Pass |
| 110% Load | 28.1 mV | 13.8 mV | 14.8 mV | 23.6 mV | Pass |
| Crossload 1 | 27.5 mV | 14.8 mV | 15.1 mV | 18.5 mV | Pass |
| Crossload 2 | 29.8 mV | 17.1 mV | 15.7 mV | 18.9 mV | Pass |
| Crossload 3 | 28.1 mV | 13.8 mV | 16.2 mV | 18.8 mV | Pass |
| Crossload 4 | 27.4 mV | 13.1 mV | 13.7 mV | 20.2 mV | Pass |
Ripple suppression is good overall.
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Hi Ari!
I’m looking into a new PSU because of a GPU upgrade. Would you recommend this over the NZXT C850? In my country, they are the same price.
Best regards
It is a very good and newer platform than the NZXT, so I would give it a try.
Cheers, thanks for the reply. I think I’ll go for the ‘be quiet!’ then.
Thank you for the review Ari! Looking forward 550w version of the Pure Power 13M if you can review it in near future. It costs 101,90€ in Europe and probably the best offering at that price range with 10yr warranty for a low power high quality PSU.
I´m coming from Seasonic G-360 (360w) 80 Plus Gold which i bought 1/2015, but for the new system could be wise to change it even though G360 is high quality PSU that in test bench put out 450w before shut down and had high efficiency (90,7% 50% / 88.3% 20%), Japanese 105°C capacitors, very silent ADDA fan etc. I might still get +/- 5 extra years out of this, but if it kills other parts when dying then it gets expensive. I´m hoping to get similar quality for new PSU (reliable, silent, efficient) and don´t need high power version due to opting for modest 6C/12T CPU (65w TDP) and using old GTX 1060 3GB GPU for random gaming, internet and HTPC use. Unless you say to me that i should keep the current one as long it lasts?
I will do it in time. I will review the entire line, I just take it in order of Wattage.
Hi, Which one would you recommend at 850 watts? The corsair rm850x or the be quiet! pure power 13m? I would love to hear your opinion on which one would be a better option! The pricing is the exact same where I live.
Tough choice. Both are very good. I really cannot tell; it’s down to what you want more. I like the Corsair RMx series a lot; it’s among my favorite choices for builds. However, the Pure Power 13m is dead silent, which is not to say the RMx is noisy. Having the same price doesn’t help LOL
Hello, so there is actually no actual difference between both except the noise and sleeved cables (rm850x has them)? In my country the pure power 13 M 850W is like 50 euros cheaper.