CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
ZHONG YUAN POWER GX850
Serial Number
Lab IDZY85002350
  • Report: 24PS2350A
  • Receipt Date: Jan 24, 2024
  • Test Date: Feb 12, 2024
  • Report Date: Feb 15, 2024
115V230V
Efficiency Rating
115V230V
Noise Rating
Aristeidis Bitziopoulos, Laboratory General Manager

General Information

DUT Information

BrandZHONG YUAN POWER
Manufacturer (OEM)ZHONG YUAN
SeriesGX
Model NumberGX850
Serial Number
DUT Notes

DUT Specifications

Rated Voltage (Vrms)100-240
Rated Current (Arms)10-5
Rated Frequency (Hz)50-60
Rated Power (W)850
TypeATX12V
Cooling120mm Fluid Dynamic Bearing Fan
(HA1225L12F-Z)
Semi-Passive Operation✓ (selectable)
Cable DesignFully Modular

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps202070.52.50.3
Watts10084612.53.6
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 (500mm) 1 1 18-22AWG No
4+4 pin EPS12V (500mm) 2 2 18AWG No
6+2 pin PCIe (500mm+110mm) 2 4 16AWG No
12+4 pin PCIe (500mm) (600W) 1 1 16-28AWG No
SATA (500mm+150mm+150mm+150mm) 2 8 18AWG No
4-pin Molex (500mm+150mm+150mm) / FDD (+150mm) 1 3 / 1 18-22AWG No
AC Power Cord (1400mm) - C13 coupler 1 1 17AWG -

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 v3.0 Compliance✓

Performance Summary

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)33.2
AC Loss to PWR_OK Hold Up Time (ms)26.2
PWR_OK Inactive to DC Loss Delay (ms)7

Vampire Power

Tables

Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 114.88 V 114.83 V 113.85 V 114.91 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: 1.416 1.416 1.340 1.418 1.490 PASS
Mains Voltage THD: 0.14 % 0.11 % N/A 0.17 % 2.00 % PASS
Real Power: 0.068 W -0.005 W N/A 0.114 W N/A N/A
Apparent Power: 11.020 W 10.987 W N/A 11.055 W N/A N/A
Power Factor: 0.007 N/A N/A N/A N/A N/A
Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 229.99 V 229.93 V 227.70 V 230.03 V 232.30 V PASS
Mains Frequency: 50.00 Hz 49.99 Hz 49.50 Hz 50.01 Hz 50.50 Hz PASS
Mains Voltage CF: 1.416 1.415 1.340 1.416 1.490 PASS
Mains Voltage THD: 0.13 % 0.12 % N/A 0.16 % 2.00 % PASS
Real Power: 0.163 W 0.096 W N/A 0.278 W N/A N/A
Apparent Power: 37.405 W 37.335 W N/A 37.496 W N/A N/A
Power Factor: 0.005 N/A N/A N/A N/A N/A

Efficiency Graph

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

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

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

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)

Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.23W 60.943% 0.035
5.115V 0.377W 114.87V
2 0.09A 0.46W 69.91% 0.06
5.114V 0.658W 114.87V
3 0.55A 2.808W 80.874% 0.254
5.105V 3.472W 114.87V
4 1A 5.097W 81.762% 0.355
5.097V 6.234W 114.87V
5 1.5A 7.631W 82.148% 0.408
5.087V 9.289W 114.87V
6 2.5A 12.662W 81.364% 0.466
5.065V 15.563W 114.87V
Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.23W 50.171% 0.013
5.115V 0.459W 229.95V
2 0.09A 0.46W 61.751% 0.02
5.114V 0.745W 229.95V
3 0.55A 2.808W 78.284% 0.095
5.105V 3.587W 229.95V
4 1A 5.097W 80.644% 0.157
5.097V 6.321W 229.95V
5 1.5A 7.63W 81.537% 0.211
5.087V 9.358W 229.95V
6 2.5A 12.667W 82.215% 0.291
5.067V 15.407W 229.95V

Supplementary Tests (For Reference)

Typical Load Tests

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 5.263A 2.006A 1.982A 0.983A 85.008 86.04% 0 <6.0 38.57°C 0.934
12.047V 4.986V 3.331V 5.088V 98.744 34.35°C 115.16V
20% 11.546A 3.011A 2.975A 1.182A 169.981 90.009% 0 <6.0 39.09°C 0.993
12.045V 4.983V 3.328V 5.078V 188.863 34.55°C 115.13V
30% 18.181A 3.515A 3.474A 1.382A 254.994 91.386% 0 <6.0 40.28°C 0.997
12.043V 4.98V 3.325V 5.068V 279.014 35.25°C 115.11V
40% 24.823A 4.02A 3.974A 1.582A 340.09 91.839% 540 6.3 35.79°C 0.998
12.040V 4.977V 3.322V 5.057V 370.329 41.33°C 115.09V
50% 31.118A 5.026A 4.973A 1.784A 425.098 91.768% 547 6.7 36.15°C 0.998
12.038V 4.975V 3.318V 5.047V 463.194 41.74°C 115.07V
60% 37.375A 6.035A 5.974A 1.986A 509.63 91.406% 660 10.8 36.78°C 0.998
12.036V 4.973V 3.315V 5.037V 557.545 42.83°C 115.05V
70% 43.700A 7.045A 6.977A 2.189A 594.948 90.924% 808 15.8 37.47°C 0.998
12.033V 4.97V 3.311V 5.026V 654.343 44.56°C 115.02V
80% 50.031A 8.055A 7.981A 2.293A 679.78 90.363% 982 21.8 37.93°C 0.997
12.030V 4.966V 3.308V 5.017V 752.231 46.01°C 115V
90% 56.763A 8.562A 8.471A 2.396A 765.214 89.701% 1180 27.7 38.77°C 0.997
12.027V 4.964V 3.305V 5.009V 853.118 47.81°C 114.98V
100% 63.430A 9.071A 8.994A 2.5A 849.93 88.976% 1380 32.8 39.85°C 0.997
12.025V 4.961V 3.302V 5.001V 955.222 49.92°C 114.96V
110% 69.836A 10.086A 10.095A 2.504A 935.328 88.202% 1512 35.4 40.22°C 0.997
12.022V 4.957V 3.298V 4.994V 1060.478 51.09°C 114.94V
CL1 0.116A 12.129A 11.95A 0A 101.294 84.039% 0 <6.0 40.9°C 0.974
12.045V 4.963V 3.322V 5.098V 120.519 35.37°C 115.14V
CL2 0.116A 20.193A 0A 0A 101.396 82.88% 303 <6.0 35.26°C 0.974
12.047V 4.952V 3.334V 5.104V 122.157 42.34°C 115.01V
CL3 0.116A 0A 19.903A 0A 67.392 77.835% 0 <6.0 43.86°C 0.898
12.043V 4.977V 3.316V 5.099V 86.601 34.8°C 115.16V
CL4 70.645A 0A 0A 0A 849.711 89.574% 1272 30.7 39.95°C 0.997
12.028V 4.974V 3.312V 5.061V 948.863 50.89°C 114.95V

The results above are not used in the certification process

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 5.262A 2.005A 1.981A 0.982A 85.002 87.518% 0 <6.0 38.72°C 0.789
12.048V 4.988V 3.332V 5.09V 97.11 34.49°C 229.94V
20% 11.542A 3.009A 2.974A 1.181A 169.935 91.661% 0 <6.0 39.33°C 0.914
12.045V 4.985V 3.329V 5.081V 185.402 34.74°C 229.92V
30% 18.176A 3.512A 3.471A 1.38A 254.935 92.977% 0 <6.0 40.18°C 0.961
12.043V 4.983V 3.327V 5.072V 274.195 35.16°C 229.91V
40% 24.818A 4.016A 3.97A 1.58A 340.021 93.525% 266 <6.0 35.69°C 0.98
12.040V 4.981V 3.325V 5.063V 363.566 41.26°C 229.9V
50% 31.098A 5.02A 4.967A 1.781A 424.834 93.58% 543 6.3 36°C 0.988
12.037V 4.98V 3.322V 5.055V 453.971 42.04°C 229.88V
60% 37.355A 6.027A 5.966A 1.982A 509.358 93.381% 635 9.9 36.95°C 0.99
12.035V 4.979V 3.319V 5.045V 545.47 43.48°C 229.87V
70% 43.683A 7.035A 6.966A 2.184A 594.679 93.185% 787 15.2 37.22°C 0.993
12.031V 4.976V 3.317V 5.036V 638.117 44.42°C 229.85V
80% 50.016A 8.002A 7.965A 2.287A 679.302 92.948% 963 21.6 37.73°C 0.995
12.029V 4.974V 3.314V 5.029V 730.843 45.83°C 229.84V
90% 56.751A 8.547A 8.453A 2.39A 764.923 92.658% 1158 27.2 38.13°C 0.996
12.025V 4.972V 3.312V 5.022V 825.56 47.19°C 229.83V
100% 63.424A 9.054A 8.972A 2.493A 849.642 92.326% 1357 32.2 39.47°C 0.997
12.021V 4.97V 3.31V 5.015V 920.256 49.55°C 229.81V
110% 69.834A 10.064A 10.067A 2.496A 935.03 91.91% 1510 35.4 40.13°C 0.997
12.018V 4.968V 3.307V 5.009V 1017.372 51.02°C 229.8V
CL1 0.116A 12.102A 11.949A 0A 101.291 85.637% 578 8.0 34.75°C 0.834
12.046V 4.974V 3.322V 5.101V 118.284 40.24°C 229.94V
CL2 0.115A 20.138A 0A 0A 101.362 84.695% 543 6.3 35°C 0.835
12.048V 4.964V 3.335V 5.105V 119.677 42.07°C 229.94V
CL3 0.115A 0A 19.901A 0A 67.38 79.38% 0 <6.0 44.03°C 0.756
12.045V 4.981V 3.316V 5.102V 84.849 34.93°C 229.94V
CL4 70.662A 0A 0A 0.001A 849.502 92.873% 1274 30.7 39.86°C 0.997
12.023V 4.98V 3.321V 5.071V 914.661 50.79°C 229.81V

The results above are not used in the certification process

Light Load Tests

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
20W 1.233A 0.501A 0.495A 0.196A 20.007 69.388% 0 <6.0 33.38°C 0.734
12.049V 4.994V 3.334V 5.11V 28.888 30.31°C 115.17V
40W 2.714A 0.701A 0.693A 0.294A 40.005 78.846% 0 <6.0 34.5°C 0.818
12.048V 4.992V 3.334V 5.107V 50.779 31.13°C 115.16V
60W 4.194A 0.902A 0.891A 0.392A 60.004 83.468% 0 <6.0 36.73°C 0.857
12.048V 4.991V 3.333V 5.104V 71.906 32.94°C 115.16V
80W 5.672A 1.103A 1.09A 0.49A 79.973 85.959% 0 <6.0 37.35°C 0.916
12.048V 4.989V 3.332V 5.1V 93.051 33.37°C 115.16V

The results above are not used in the certification process

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
20W 1.232A 0.501A 0.495A 0.196A 19.998 70.664% 0 <6.0 33.1°C 0.458
12.051V 4.994V 3.334V 5.11V 28.39 30.02°C 229.95V
40W 2.712A 0.701A 0.693A 0.294A 39.998 80.306% 0 <6.0 34.77°C 0.604
12.050V 4.993V 3.334V 5.107V 49.859 31.42°C 229.95V
60W 4.194A 0.902A 0.891A 0.392A 59.997 84.996% 0 <6.0 36.15°C 0.701
12.049V 4.991V 3.333V 5.104V 70.596 32.61°C 229.94V
80W 5.670A 1.102A 1.089A 0.49A 79.939 87.467% 0 <6.0 37.12°C 0.774
12.049V 4.99V 3.333V 5.101V 91.409 33.25°C 229.94V

The results above are not used in the certification process

Ripple Measurements

Test12V5V3.3V5VSBPass/Fail
10% Load5.60mV6.88mV5.70mV5.91mVPass
20% Load6.82mV8.47mV5.90mV8.00mVPass
30% Load6.97mV8.83mV6.16mV9.58mVPass
40% Load8.09mV10.00mV7.63mV9.88mVPass
50% Load9.21mV12.09mV8.44mV8.05mVPass
60% Load9.47mV12.91mV7.58mV14.42mVPass
70% Load10.17mV12.85mV7.73mV9.68mVPass
80% Load11.96mV13.11mV11.29mV14.26mVPass
90% Load12.98mV13.57mV11.49mV16.71mVPass
100% Load18.11mV16.52mV12.91mV13.44mVPass
110% Load17.78mV19.72mV15.88mV13.96mVPass
Crossload17.92mV14.81mV10.76mV11.03mVPass
Crossload28.19mV10.05mV6.26mV10.54mVPass
Crossload37.84mV14.13mV11.75mV10.55mVPass
Crossload417.18mV13.09mV9.09mV15.41mVPass

The results above are not used in the certification process

Test12V5V3.3V5VSBPass/Fail
10% Load8.76mV9.99mV10.60mV7.22mVPass
20% Load9.80mV10.30mV10.75mV8.93mVPass
30% Load9.90mV10.61mV10.09mV10.12mVPass
40% Load12.06mV11.75mV11.37mV9.50mVPass
50% Load10.78mV13.19mV11.58mV9.19mVPass
60% Load11.34mV14.22mV11.79mV13.93mVPass
70% Load11.44mV15.30mV12.10mV10.38mVPass
80% Load12.48mV14.58mV13.14mV16.00mVPass
90% Load15.21mV15.92mV12.88mV17.50mVPass
100% Load17.53mV18.84mV15.60mV12.81mVPass
110% Load18.83mV21.58mV17.96mV13.30mVPass
Crossload110.08mV15.28mV12.15mV11.30mVPass
Crossload210.52mV16.54mV10.24mV11.92mVPass
Crossload39.18mV15.71mV13.08mV11.20mVPass
Crossload416.61mV15.20mV13.85mV15.64mVPass

The results above are not used in the certification process

ZHONG YUAN POWER GX850

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