CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
Zalman TeraMax II 850W
Serial Number
Lab IDZL85002107
  • Report: 22PS2107A
  • Receipt Date: Dec 24, 2022
  • Test Date: Jan 3, 2023
  • Report Date: Jan 4, 2023
115V230V
Efficiency Rating
115V230V
Noise Rating
Aristeidis Bitziopoulos, Laboratory General Manager

General Information

DUT Information

BrandZalman
Manufacturer (OEM)Jiumeng
SeriesTeraMax
Model NumberZM850-TMX2
Serial Number
DUT NotesThe TMX units are the same as TMX2 ones minus the 12VHPWR output port at the modular panel of the PSU

DUT Specifications

Rated Voltage (Vrms)100-240
Rated Current (Arms)12-6
Rated Frequency (Hz)50-60
Rated Power (W)850
TypeATX12V
Cooling120mm Rifle Bearing Fan
(BOK BDH12025S)
Semi-Passive Operation✗
Cable DesignFully Modular

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps202070.8330.3
Watts120850153.6
Total Max. Power (W)850

Test Equipment

Electronic Loads Chroma 63601-5 x2
Chroma 63600-2
63640-80-80 x10
63610-80-20
AC Sources Chroma 6530, APM SP300VAC4000W-P
Power Analyzers RS HMC8015, N4L PPA1530, N4L PPA5530
Oscilloscopes Picoscope 4444, Rigol DS7014, Siglent SDS2104X PLUS
Sound Analyzer Bruel & Kjaer 2270 G4
Microphone Bruel & Kjaer Type 4955-A
Temperature Logger Picoscope TC-08
Tachometer UNI-T UT372
Multimeters Keysight 34465A, Keithley 2015 - THD
UPS FSP Champ Tower 3kVA, CyberPower OLS3000E 3kVA
Isolation Transformer 4kVA
Testing Methodology Cybenetics PSU Test Protocol

Cables and Connectors

Modular Cables
Description Cable Count Connector Count (Total) Gauge In Cable Capacitors
ATX connector 20+4 pin (600mm) 1 1 18-20AWG No
4+4 pin EPS12V (700mm) 2 2 18AWG No
6+2 pin PCIe (550mm+150mm) 3 6 18AWG No
12+4 pin PCIe (600mm) (600W) 1 1 16-26AWG No
SATA (500mm+150mm+150mm+150mm) 3 12 18AWG No
4-pin Molex (510mm+150mm+150mm) / FDD (+150mm) 1 3 / 1 18-22AWG No

Test Results

Temperature & Compliance Info

Temperature Range (°C /°F)30-32 / 86-89.6
ErP Lot 3/6 Ready✓
(EU) No 617/2013 Compliance✓
ALPM (Alternative Low Power Mode) compatible✓
ATX v3.1 PSU Power Excursion✓

Performance Summary 115V

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)14.4
AC Loss to PWR_OK Hold Up Time (ms)13.2
PWR_OK Inactive to DC Loss Delay (ms)1.2

Vampire Power

Tables 115V

Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 114.84 V 114.80 V 113.85 V 114.88 V 116.15 V PASS
Mains Frequency: 60.00 Hz 59.99 Hz 59.40 Hz 60.02 Hz 60.60 Hz PASS
Mains Voltage CF: 1.417 1.416 1.340 1.419 1.490 PASS
Mains Voltage THD: 0.15 % 0.12 % N/A 0.19 % 2.00 % PASS
Real Power: 0.045 W 0.003 W N/A 0.077 W N/A N/A
Apparent Power: 9.853 W 9.824 W N/A 9.887 W N/A N/A
Power Factor: 0.006 N/A N/A N/A N/A N/A

Efficiency Graph

115V

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

115V

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) 115V

Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.23W 66.392% 0.038
5.129V 0.347W 114.85V
2 0.09A 0.461W 73.637% 0.068
5.128V 0.626W 114.84V
3 0.55A 2.814W 80.514% 0.273
5.118V 3.495W 114.85V
4 1A 5.108W 81.205% 0.344
5.109V 6.29W 114.85V
5 1.5A 7.647W 80.993% 0.392
5.099V 9.441W 114.84V
6 2.999A 15.195W 78.554% 0.454
5.067V 19.344W 114.85V

Supplementary Tests (For Reference)

Typical Load Tests 115V

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 5.292A 1.963A 1.944A 0.98A 84.985 86.725% 838 23.0 39.31°C 0.98
11.980V 5.095V 3.393V 5.101V 97.993 43.61°C 114.84V
20% 11.608A 2.949A 2.926A 1.178A 169.905 90.079% 841 23.2 40.96°C 0.977
11.975V 5.087V 3.383V 5.091V 188.618 45.76°C 114.82V
30% 18.292A 3.446A 3.423A 1.377A 254.889 91.228% 854 23.0 41.34°C 0.986
11.963V 5.078V 3.374V 5.082V 279.395 46.64°C 114.78V
40% 24.998A 3.944A 3.922A 1.577A 339.957 91.405% 995 26.2 42.09°C 0.99
11.951V 5.07V 3.365V 5.072V 371.922 47.77°C 114.77V
50% 31.330A 4.939A 4.92A 1.778A 424.52 91.129% 1146 30.3 42.62°C 0.992
11.938V 5.062V 3.353V 5.061V 465.841 48.76°C 114.75V
60% 37.672A 5.936A 5.923A 1.98A 509.042 90.703% 1223 29.7 42.85°C 0.994
11.925V 5.054V 3.342V 5.051V 561.222 49.59°C 114.72V
70% 44.100A 6.938A 6.935A 2.181A 594.4 90.157% 1367 32.6 43.17°C 0.995
11.912V 5.045V 3.331V 5.04V 659.295 50.21°C 114.7V
80% 50.542A 7.945A 7.951A 2.285A 679.25 89.45% 1516 35.4 43.8°C 0.996
11.899V 5.036V 3.318V 5.03V 759.366 51.84°C 114.68V
90% 57.403A 8.452A 8.46A 2.389A 764.663 88.697% 1634 39.2 44.73°C 0.996
11.885V 5.027V 3.308V 5.021V 862.112 54.1°C 114.66V
100% 64.013A 8.965A 9.001A 2.997A 849.508 87.808% 1743 39.7 45.23°C 0.997
11.871V 5.018V 3.298V 5.003V 967.467 55.24°C 114.63V
110% 70.492A 9.979A 10.129A 3.001A 934.034 86.752% 1838 40.9 46.72°C 0.996
11.858V 5.009V 3.286V 4.997V 1076.68 57.66°C 114.6V
CL1 0.115A 14.179A 14.238A 0A 121.246 82.994% 1062 26.2 39.88°C 0.975
11.983V 5.091V 3.349V 5.108V 146.089 45.39°C 114.82V
CL2 0.114A 19.553A 0A 0A 101.366 83.176% 875 23.3 38.13°C 0.976
11.989V 5.114V 3.365V 5.117V 121.868 45.37°C 114.82V
CL3 0.114A 0A 19.611A 0A 67.354 76.184% 854 23.0 40.58°C 0.973
11.980V 5.071V 3.364V 5.113V 88.407 49.68°C 114.84V
CL4 71.554A 0A 0A 0.001A 849.383 88.042% 1749 39.5 44.9°C 0.996
11.872V 5.019V 3.327V 5.075V 964.746 55.82°C 114.63V

The results above are not used in the certification process

Light Load Tests 115V

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
20W 1.238A 0.49A 0.485A 0.195A 19.989 69.962% 830 24.3 36.57°C 0.83
11.985V 5.102V 3.403V 5.122V 28.569 39.66°C 114.84V
40W 2.727A 0.686A 0.679A 0.293A 39.987 80.313% 834 22.3 37.13°C 0.92
11.984V 5.099V 3.4V 5.119V 49.787 40.47°C 114.84V
60W 4.216A 0.883A 0.874A 0.391A 59.986 83.902% 838 23 38.07°C 0.96
11.982V 5.096V 3.398V 5.115V 71.499 41.86°C 114.83V
80W 5.703A 1.079A 1.069A 0.489A 79.941 86.88% 834 22.3 39.11°C 0.977
11.979V 5.096V 3.396V 5.112V 92.013 43.01°C 114.83V

The results above are not used in the certification process

Ripple Measurements 115V

Test12V5V3.3V5VSBPass/Fail
10% Load20.23mV11.28mV14.56mV11.69mVPass
20% Load29.95mV7.06mV16.68mV11.64mVPass
30% Load26.10mV7.57mV17.29mV12.19mVPass
40% Load28.53mV14.28mV19.77mV13.51mVPass
50% Load27.01mV13.36mV20.78mV15.23mVPass
60% Load25.45mV11.89mV22.70mV16.65mVPass
70% Load24.84mV15.45mV24.47mV15.84mVPass
80% Load24.33mV13.57mV28.51mV17.91mVPass
90% Load24.89mV10.52mV29.17mV17.00mVPass
100% Load39.60mV12.57mV32.71mV23.97mVPass
110% Load42.79mV13.94mV35.34mV30.13mVPass
Crossload142.00mV12.24mV33.50mV15.56mVPass
Crossload233.64mV9.15mV30.79mV12.50mVPass
Crossload310.43mV16.92mV31.95mV12.90mVPass
Crossload439.20mV10.86mV20.42mV21.05mVPass

The results above are not used in the certification process

Zalman TeraMax II 850W

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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
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