CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
Cooler Master Masterwatt Lite 400W
Serial NumberMPX4001ACABW1164700477
Lab IDCM40001754
  • Report: 20PS1754A
  • Receipt Date: Nov 10, 2020
  • Test Date: Nov 18, 2020
  • Report Date: Nov 19, 2020
115V230V
Efficiency Rating
115V230V
Noise Rating
Aristeidis Bitziopoulos, Laboratory General Manager

General Information

DUT Information

BrandCooler Master
Manufacturer (OEM)
SeriesMasterwatt Lite
Model NumberMPX-4001-ACABW
Serial NumberMPX4001ACABW1164700477
DUT Notes

DUT Specifications

Rated Voltage (Vrms)200-240
Rated Current (Arms)3.5
Rated Frequency (Hz)50-60
Rated Power (W)400
TypeATX12V
Cooling120mm Sleeve Bearing Fan
(D12SH-12)
Semi-Passive Operation✗
Cable DesignFixed cables

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps2020302.50.3
Watts12036012.53.6
Total Max. Power (W)400

Test Equipment

Electronic Loads Chroma 63601-5 x4
Chroma 63600-2 x2
63640-80-80 x20
63610-80-20 x2
AC Sources Chroma 6530, Keysight AC6804B
Power Analyzers N4L PPA1530 x2
Sound Analyzer Bruel & Kjaer 2270 G4
Microphone Bruel & Kjaer Type 4955-A
Data Loggers Picoscope TC-08 x2, Labjack U3-HV x2
Tachometer UNI-T UT372 x2
Digital Multimeter Keysight U1273AX, Fluke 289, Keithley 2015 - THD
UPS CyberPower OLS3000E 3kVA x2
Transformer 3kVA x2
Testing Methodology Cybenetics PSU Test Protocol

Cables and Connectors

Native Cables
Description Cable Count Connector Count (Total) Gauge In Cable Caps
ATX connector 20+4 pin (520mm) 1 1 20-22AWG No
4+4 pin EPS12V (620mm) 1 1 20AWG No
6+2 pin PCIe (530mm) 1 1 20AWG No
SATA (480mm+95mm+95mm) 2 6 20AWG No
4-pin Molex (480mm+100mm+100mm) / FDD (+100mm) 1 3 / 1 20-22AWG No
Modular Cables
AC Power Cord (1350mm) - C13 coupler 1 1 18AWG -

Test Results

Temperature & Compliance Info

Temperature Range (°C /°F)30-32 / 86-89.6
ErP Lot 3/6 Ready✓
(EU) No 617/2013 Compliance✓

Performance Summary 230V

Efficiency Rating
Noise RatingStandard
Average Efficiency (>1450 load combinations)82.963%
Average Noise Output (>1450 Load Combinations)44.57dBA
Average PF (>1450 Load Combinations)0.973
Efficiency With 10W (≤500W) or 2% (>500W) Load0.000%
Standby Power Consumption0.0924W
12V Ripple (Full Load)61.12mV
5V Ripple (Full Load)32.85mV
3.3V Ripple (Full Load)19.44mV
5VSB Ripple (Full Load)15.45mV
12V Load Regulation1.08%
5V Load Regulation1.70%
3.3V Load Regulation3.35%
5VSB Load Regulation2.90%
Inrush Current73.840A
12V Transient Response (150%)0.00V
5V Transient Response (150%)V
3.3V Transient Response (150%)V
5VSB Transient Response (150%)V
Hold-Up Time & Power Ok Signal11.50ms
AC Loss to PWR_OK Hold Up Time8.80ms
PWR_OK Inactive to DC Loss Delay2.70ms
PSU Timings: T1 (20% / 100%)59.0ms57.0ms
PSU Timings: T3 (20% / 100%)266.0ms272.0ms
OPP (25.50°C / 32.00°C)112.94%111.46%

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)11.5
AC Loss to PWR_OK Hold Up Time (ms)8.8
PWR_OK Inactive to DC Loss Delay (ms)2.7

Vampire Power

Tables 230V

Graphs 230V

INFO

This graph is generated by the PPA Standby Power Analysis software which takes full control of the power analyzer during the whole procedure. This application features all of the EN50564 & IEC62301 test limits for standby power software testing

Efficiency Graph

230V

INFO

This graph depicts the PSU`s efficiency throughout its entire operational range. For the generation of the efficiency and noise graphs we set our loaders to auto mode through our custom-made software before trying thousands of possible load combinations

Noise Graph

230V

INFO

The PSU`s noise in its entire operational range and under 30-32 °C ambient is depicted in this graph. The X axis represents the load on the +12V rail(s) while the Y axis is the load on the minor rails

Indicative Performance

Efficiency under high ambient temperature

INFO

The PSU`s efficiency under high ambient temperatures with 115V and 230V input. For this graph the results of the 10-110% load regulation table are used

5VSB Efficiency

INFO

This graph depicts the efficiency levels of the 5VSB rail with 115V and 230V input

5VSB Efficiency (ERP LOT 3/6 & CEC) 230V

Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.227 59.269% 0.025
5.041V 0.383 230.28V
2 0.090A 0.454 67.560% 0.043
5.041V 0.672 230.29V
3 0.550A 2.768 76.996% 0.189
5.033V 3.595 230.30V
4 1.000A 5.025 77.895% 0.268
5.025V 6.451 230.31V
5 1.500A 7.525 78.068% 0.317
5.017V 9.639 230.29V
6 2.500A 12.498 78.269% 0.365
5.000V 15.968 230.29V

Supplementary Tests (For Reference)

Typical Load Tests 230V

Test # 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
1 1.542A 1.969A 1.953A 0.998A 39.986 73.119% 1433 36.5 30.14°C 0.832
11.927V 5.080V 3.375V 5.012V 54.686 34.15°C 230.29V
2 4.115A 2.957A 2.944A 1.201A 80.009 80.797% 1576 39.2 31.04°C 0.923
11.934V 5.073V 3.362V 4.997V 99.025 35.59°C 230.28V
3 7.037A 3.448A 3.447A 1.405A 119.938 83.718% 1577 39.2 31.11°C 0.953
11.921V 5.075V 3.351V 4.983V 143.265 36.29°C 230.27V
4 9.974A 3.937A 3.952A 1.609A 159.969 84.813% 1738 42.3 31.90°C 0.967
11.909V 5.078V 3.340V 4.970V 188.614 37.65°C 230.26V
5 12.540A 4.933A 4.961A 1.816A 199.988 85.057% 1834 43.1 32.51°C 0.975
11.921V 5.068V 3.326V 4.955V 235.123 38.82°C 230.26V
6 15.094A 5.931A 5.975A 2.000A 239.811 85.016% 1934 45.2 32.93°C 0.980
11.934V 5.059V 3.313V 4.940V 282.076 39.49°C 230.26V
7 17.656A 6.932A 7.002A 2.233A 279.991 84.757% 2028 46.6 33.56°C 0.983
11.944V 5.050V 3.300V 4.924V 330.344 40.85°C 230.25V
8 20.209A 7.938A 8.034A 2.444A 319.971 84.345% 2108 46.0 34.09°C 0.986
11.954V 5.040V 3.285V 4.907V 379.359 42.10°C 230.25V
9 23.229A 8.428A 8.548A 2.450A 359.901 84.035% 2147 47.0 34.39°C 0.987
11.943V 5.042V 3.274V 4.897V 428.276 43.26°C 230.26V
10 26.219A 8.920A 9.102A 2.559A 399.971 83.556% 2188 47.9 35.24°C 0.988
11.930V 5.044V 3.262V 4.883V 478.684 44.51°C 230.26V
11 29.646A 8.899A 9.129A 2.564A 439.826 83.102% 2193 48.0 35.70°C 0.989
11.895V 5.057V 3.252V 4.874V 529.261 45.55°C 230.25V
CL1 3.999A 14.001A 13.998A 0.000A 163.588 78.458% 2086 47.2 32.40°C 0.971
12.344V 4.862V 3.297V 4.960V 208.504 38.54°C 230.27V
CL2 30.000A 0.999A 1.000A 1.000A 359.918 85.106% 1992 45.7 35.86°C 0.987
11.548V 5.236V 3.305V 4.942V 422.907 44.81°C 230.27V

The results above are not used in the certification process

Light Load Tests 230V

Test # 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) PF/AC Volts
1 1.255A 0.486A 0.486A 0.199A 19.980 64.472% 1083 28.1 0.688
11.824V 5.131V 3.386V 5.033V 30.990 230.30V
2 2.505A 0.977A 0.975A 0.398A 39.969 74.916% 1293 33.6 0.826
11.846V 5.119V 3.379V 5.024V 53.352 230.30V
3 3.755A 1.468A 1.466A 0.598A 60.000 79.889% 1174 30.8 0.889
11.866V 5.108V 3.373V 5.015V 75.104 230.30V
4 4.997A 1.960A 1.960A 0.799A 79.950 82.184% 1238 32.1 0.921
11.878V 5.100V 3.367V 5.006V 97.282 230.29V

The results above are not used in the certification process

Ripple Measurements 230V

Test12V5V3.3V5VSBPass/Fail
10% Load23.00mV16.00mV8.20mV12.60mVPass
20% Load25.30mV14.50mV8.30mV45.50mVPass
30% Load26.30mV15.30mV8.60mV13.20mVPass
40% Load27.30mV15.40mV9.10mV13.50mVPass
50% Load29.90mV16.60mV9.90mV13.40mVPass
60% Load32.50mV17.10mV10.60mV13.40mVPass
70% Load35.60mV19.40mV11.50mV14.10mVPass
80% Load40.80mV21.50mV16.80mV13.70mVPass
90% Load43.20mV27.30mV17.90mV42.90mVPass
100% Load61.10mV32.90mV19.40mV15.50mVPass
110% Load61.40mV35.10mV20.50mV15.80mVPass
Crossload144.10mV29.00mV18.30mV14.00mVPass
Crossload250.30mV24.40mV13.80mV16.10mVPass

The results above are not used in the certification process

Cooler Master Masterwatt Lite 400W

Top side
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 offers the ETA and Lambda voluntary certification programs, through which the efficient and silent power supplies are promoted
CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
www.cybenetics.com - info@cybenetics.com