CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
be quiet! Pure Power 13 M 850W
Serial Number027EUS5161002004
Lab IDBQ85002841
Certification ID252841
  • Test Result Report ID: 25PS2841A
  • Certificate Issue Date: Jun 10, 2025
115V230V
Scheme: ETA-EMI PSU
115V230V
Scheme: LAMBDA PSU
Outside Validation Scope
Aristeidis Bitziopoulos, Certification Body General Manager

General Information

Test Equipment

DUT Information(Non-accredited measurements)

Cables and Connectors(Non-accredited measurements)

Protection Features(Manufacturer)

Power Specifications

Parts Description

Test Results

Temperature & Compliance Info

Performance Summary

Hold-Up Time & PWR_OK Signal

Vampire Power

Tables

Graphs

Efficiency Graph

Efficiency and power factor by load range

868788899091929394Average efficiency (%)87.6291.5292.0491.4590.3588.5992.9993.8093.6693.080-<20 %20-<40 %40-<60 %60-<80 %80-100 %axis starts at 86115V230V
868788899091929394Average efficiency (%)0-<20 %20-<40 %40-<60 %60-<80 %80-100 %axis starts at 86115V230V
0.820.840.860.880.900.920.940.960.981.00Average power factor0.9730.9890.9950.9970.9980.8490.9610.9790.9850.9880-<20 %20-<40 %40-<60 %60-<80 %80-100 %axis starts at 0.82115V230V
0.820.840.860.880.900.920.940.960.981.00Average power factor0-<20 %20-<40 %40-<60 %60-<80 %80-100 %axis starts at 0.82115V230V
Load rangePointsEfficiency
115V
Efficiency
230V
PF
115V
PF
230V
0-<20 %200 / 20087.62%88.59%0.9730.849
20-<40 %318 / 31891.52%92.99%0.9890.961
40-<60 %319 / 31992.04%93.80%0.9950.979
60-<80 %318 / 31891.45%93.66%0.9970.985
80-100 %326 / 32690.35%93.08%0.9980.988
70-100 % (High-Load)486 / 48690.64%93.24%0.9970.987
All (published average)1481 / 148190.83%92.73%0.9920.961

INFO

The average efficiency and power factor in five ranges of load. Calculated from the 1481 (115V) and 1481 (230V) load combinations of the certification sweep, the same data that ETA and LAMBDA use (test 0 excluded). Load is the total DC output as a share of the rated 850 W. These are plain averages of the valid readings, as for the ETA rating, so the ranges combined give back the published averages.

Informational. Not part of the ETA or LAMBDA rating.

Noise Graph

Noise by load range

High-Load Index (70-100 % load)
Noise 12.0 dB(A) at 115V and 12.0 dB(A) at 230V · loudest point 15.5 dB(A)
Efficiency 90.64% / 93.24% · power factor 0.997 / 0.987 (115V / 230V)
05101520Average noise (dB(A))5.15.00-<20 %fan off 99%/100%10.29.620-<40 %fan off 38%/50%11.611.840-<60 %fan off 7%/0%11.811.860-<80 %fan off 0%/0%12.012.080-100 %fan off 0%/0%115V230V
05101520Average noise (dB(A))5.15.00-<20 %off 99%/100%10.29.620-<40 %off 38%/50%11.611.840-<60 %off 7%/0%11.811.860-<80 %off 0%/0%12.012.080-100 %off 0%/0%115V230V
Load rangeNoise 115V
avg (loudest)
Noise 230V
avg (loudest)
Fan off
115V / 230V
0-<20 %5.1 (10.1)5.0 (5.0)99% / 100%
20-<40 %10.2 (11.8)9.6 (11.8)38% / 50%
40-<60 %11.6 (11.8)11.8 (11.8)7% / 0%
60-<80 %11.8 (11.8)11.8 (11.8)0% / 0%
80-100 %12.0 (15.5)12.0 (13.9)0% / 0%
70-100 % (High-Load)12.0 (15.5)12.0 (13.9)0% / 0%
All (published average)11.0 (15.5)11.0 (13.9)23% / 24%

INFO

The average noise in five ranges of load, the share of points with the fan stopped (semi-passive operation), and the High-Load Index: the same figures for all points at 70 % of the rated output and above. Calculated from the 1481 (115V) and 1481 (230V) load combinations of the certification sweep, the same data that ETA and LAMBDA use (test 0 excluded). Load is the total DC output as a share of the rated 850 W. Noise is averaged on the energy scale, as for LAMBDA, so the ranges combined give back the published average noise. Each load combination is held for about five seconds; the stabilized readings at fixed loads are under "Noise under high ambient temperature".

Informational. Not part of the ETA or LAMBDA rating.

Noise under high ambient temperature (indicative)

115V

LoadNormal ambient
fan · noise · intake
High ambient
fan · noise · intake
Noise change
10%0 RPM · <6.0 dB(A) · 31.4 °C714 RPM · 11.4 dB(A) · 40.3 °Cfan starts (<6.0 → 11.4)
20%0 RPM · <6.0 dB(A) · 34.4 °C716 RPM · 11.3 dB(A) · 40.7 °Cfan starts (<6.0 → 11.3)
50%685 RPM · 10.5 dB(A) · 30.3 °C724 RPM · 12.2 dB(A) · 42.2 °C+1.7 dB(A)
100%698 RPM · 11.5 dB(A) · 31.0 °C1164 RPM · 26.6 dB(A) · 45.2 °C+15.1 dB(A)

230V

LoadNormal ambient
fan · noise · intake
High ambient
fan · noise · intake
Noise change
10%0 RPM · <6.0 dB(A) · 32.1 °C0 RPM · <6.0 dB(A) · 44.8 °Cfan off in both
20%0 RPM · <6.0 dB(A) · 33.2 °C720 RPM · 11.8 dB(A) · 40.6 °Cfan starts (<6.0 → 11.8)
50%683 RPM · 10.2 dB(A) · 30.1 °C726 RPM · 12.4 dB(A) · 42.4 °C+2.2 dB(A)
100%695 RPM · 11.4 dB(A) · 30.2 °C1157 RPM · 26.2 dB(A) · 45.4 °C+14.8 dB(A)

INFO

Fan speed, noise and the measured intake temperature at 10, 20, 50 and 100 % load, from the two load regulation tests: at normal ambient (about 30-32 °C) and at high ambient (about 40-47 °C). These are stabilized readings at fixed loads, not averages over the certification sweep, so they are indicative of how the fan behaves when it is hot. "<6.0" is the floor of our sound meter: the fan is stopped or too quiet to measure (the fan speed column says which); with the fan stopped, the intake sensor can read higher than the chamber air.

Informational. Not part of the ETA or LAMBDA rating.

Conducted Emissions EN 55032 & CISPR 32

Indicative Performance

Efficiency under high ambient temperature

5VSB Efficiency

5VSB Efficiency (ERP LOT 3/6 & CEC)

Protection Features

Supplementary Tests (For Reference)

Typical Load Tests

Light Load Tests

Ripple Measurements

be quiet! Pure Power 13 M 850W

Top side
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Power specifications label
Power specifications label
All data and graphs included in this test report can be used by any individual on the following conditions:
› It should be mentioned that the test results are provided by Cybenetics
› The link to the original test results document should be provided in any case
Cybenetics runs voluntary certification programs for power supplies - ETA for efficiency, LAMBDA for noise and SAFE for safety and correct operation - and for cooling products, with DELTA for chassis soundproofing and PHI for fan airflow and static pressure. THETA rates cooler performance on AMD AM5 and Intel LGA1851 outside ISO 17065 and accreditation scope
CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus