CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
ZHONG YUAN POWER SFX-850GM
Serial Number
Lab IDZY85002511
  • Report: 24PS2511A
  • Receipt Date: Jul 9, 2024
  • Test Date: Jul 18, 2024
  • Report Date: Jul 18, 2024
115V230V
Efficiency Rating
115V230V
Noise Rating
Aristeidis Bitziopoulos, Laboratory General Manager

General Information

DUT Information

BrandZHONG YUAN POWER
Manufacturer (OEM)Zhong Yuan Power
SeriesSFX
Model NumberSFX-850GM
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
TypeSFX
Cooling92mm Fluid Dynamic Bearing Fan (HA9215HH12FD-F00)
Semi-Passive Operation✓
Cable DesignFully Modular

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps202070.830.3
Watts100850153.6
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 (300mm) 1 1 16-18AWG No
4+4 pin EPS12V (400mm) 2 2 16AWG No
6+2 pin PCIe (400mm+150mm) 1 2 18AWG No
12+4 pin PCIe (450mm) (600W) 1 1 16-28AWG No
SATA (300mm+155mm+155mm+155mm) 2 8 18AWG No
4-pin Molex (300mm+150mm+150mm+150mm) 1 4 18AWG No
AC Power Cord (1380mm) - 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✓
ALPM (Alternative Low Power Mode) compatible✓
ATX v3.1 PSU Power Excursion✓

Performance Summary

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)25
AC Loss to PWR_OK Hold Up Time (ms)18
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: 115.07 V 115.04 V 113.85 V 115.12 V 116.15 V PASS
Mains Frequency: 60.00 Hz 59.99 Hz 59.40 Hz 60.01 Hz 60.60 Hz PASS
Mains Voltage CF: 1.416 1.415 1.340 1.418 1.490 PASS
Mains Voltage THD: 0.13 % 0.08 % N/A 0.20 % 2.00 % PASS
Real Power: 0.056 W 0.006 W N/A 0.086 W N/A N/A
Apparent Power: 8.715 W 8.363 W N/A 9.070 W N/A N/A
Power Factor: 0.008 N/A N/A N/A N/A N/A
Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 231.06 V 230.96 V 227.70 V 231.11 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: 1.417 1.416 1.340 1.419 1.490 PASS
Mains Voltage THD: 0.17 % 0.15 % N/A 0.25 % 2.00 % PASS
Real Power: 0.097 W 0.072 W N/A 0.176 W N/A N/A
Apparent Power: 28.663 W 28.177 W N/A 29.175 W N/A N/A
Power Factor: 0.003 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 71.799% 0.039
5.116V 0.321W 115.15V
2 0.09A 0.46W 78.405% 0.07
5.115V 0.587W 115.14V
3 0.55A 2.812W 86.735% 0.283
5.111V 3.242W 115.14V
4 1A 5.107W 86.793% 0.375
5.106V 5.884W 115.14V
5 1.5A 7.653W 86.848% 0.42
5.101V 8.812W 115.14V
6 3A 15.259W 83.112% 0.486
5.086V 18.359W 115.14V
Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.23W 62.451% 0.013
5.116V 0.369W 230.35V
2 0.09A 0.46W 73.311% 0.023
5.115V 0.628W 230.36V
3 0.55A 2.812W 84.921% 0.113
5.11V 3.312W 230.35V
4 1A 5.107W 86.247% 0.185
5.106V 5.92W 230.35V
5 1.5A 7.653W 85.793% 0.246
5.101V 8.921W 230.35V
6 3A 15.26W 82.734% 0.347
5.086V 18.444W 230.35V

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% 5.155A 2.004A 1.965A 0.981A 85.005 85.464% 0 <6.0 50.01°C 0.951
12.300V 4.99V 3.359V 5.101V 99.462 40.14°C 115.16V
20% 11.307A 3.008A 2.951A 1.178A 169.961 90.57% 0 <6.0 50.81°C 0.983
12.299V 4.989V 3.355V 5.093V 187.658 40.94°C 115.13V
30% 17.803A 3.51A 3.445A 1.377A 254.966 91.46% 0 <6.0 52.21°C 0.989
12.296V 4.987V 3.352V 5.085V 278.77 41.11°C 115.1V
40% 24.310A 4.013A 3.941A 1.576A 340.054 91.894% 0 <6.0 54.51°C 0.992
12.293V 4.985V 3.349V 5.078V 370.047 41.78°C 115.09V
50% 30.470A 5.018A 4.933A 1.776A 424.99 91.81% 1266 19.9 42.28°C 0.994
12.290V 4.983V 3.345V 5.07V 462.901 49.59°C 115.06V
60% 36.599A 6.024A 5.925A 1.976A 509.501 91.515% 1491 24.8 42.62°C 0.994
12.287V 4.981V 3.342V 5.062V 556.743 49.96°C 115.03V
70% 42.800A 7.031A 6.921A 2.177A 594.844 91.1% 1751 29.4 43.12°C 0.995
12.284V 4.98V 3.338V 5.054V 652.958 50.85°C 115.01V
80% 49.000A 8.037A 7.916A 2.279A 679.657 90.482% 1990 33.1 43.6°C 0.996
12.281V 4.977V 3.334V 5.046V 751.157 52.1°C 114.99V
90% 55.595A 8.542A 8.404A 2.381A 765.065 89.982% 2234 36.6 44.65°C 0.996
12.277V 4.975V 3.331V 5.04V 850.244 53.32°C 114.96V
100% 61.936A 9.049A 8.924A 2.984A 849.919 89.201% 2551 39.8 45.77°C 0.996
12.274V 4.973V 3.328V 5.027V 952.813 55.29°C 114.94V
110% 68.150A 10.058A 10.017A 2.988A 934.513 88.274% 2556 39.8 46.61°C 0.995
12.270V 4.971V 3.324V 5.021V 1058.663 57.63°C 114.92V
CL1 0.114A 12.432A 12.215A 0A 104.299 82.743% 1445 23.6 40.54°C 0.963
12.300V 4.987V 3.348V 5.102V 126.054 48.17°C 115.14V
CL2 0.114A 20.028A 0A 0A 101.395 82.394% 1221 19 40.68°C 0.964
12.302V 4.993V 3.363V 5.107V 123.062 47.03°C 115.14V
CL3 0.113A 0A 19.74A 0A 67.386 75.606% 1099 15.8 40.18°C 0.945
12.300V 4.989V 3.343V 5.103V 89.127 45.79°C 115.15V
CL4 69.210A 0A 0A 0A 849.575 89.759% 2222 36.2 45.54°C 0.996
12.276V 4.981V 3.342V 5.066V 946.515 53.11°C 114.93V

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% 5.154A 2.004A 1.965A 0.98A 84.998 86.243% 0 <6.0 47.75°C 0.75
12.302V 4.99V 3.359V 5.101V 98.561 40.13°C 230.37V
20% 11.305A 3.007A 2.95A 1.178A 169.945 91.187% 0 <6.0 48.61°C 0.852
12.299V 4.988V 3.355V 5.093V 186.368 40.55°C 230.37V
30% 17.802A 3.51A 3.446A 1.377A 254.954 92.807% 0 <6.0 49.64°C 0.932
12.296V 4.986V 3.352V 5.085V 274.716 41.12°C 230.37V
40% 24.310A 4.013A 3.942A 1.576A 340.055 93.496% 1511 25 41.94°C 0.955
12.293V 4.984V 3.349V 5.078V 363.713 50.24°C 230.37V
50% 30.474A 5.019A 4.933A 1.776A 425.031 93.554% 1334 22.1 42.3°C 0.967
12.290V 4.982V 3.345V 5.069V 454.315 48.89°C 230.37V
60% 36.609A 6.025A 5.927A 1.976A 509.594 93.481% 1506 24.9 42.76°C 0.974
12.286V 4.981V 3.341V 5.061V 545.129 49.21°C 230.37V
70% 42.807A 7.032A 6.922A 2.177A 594.925 93.326% 1739 29.3 43.16°C 0.978
12.284V 4.979V 3.338V 5.053V 637.469 49.57°C 230.35V
80% 49.005A 8.038A 7.917A 2.279A 679.714 92.969% 1943 32.4 43.8°C 0.981
12.281V 4.977V 3.334V 5.046V 731.114 50.63°C 230.33V
90% 55.600A 8.543A 8.405A 2.381A 765.121 92.692% 2248 37.1 44.57°C 0.981
12.277V 4.975V 3.331V 5.039V 825.451 51.71°C 230.31V
100% 61.939A 9.05A 8.924A 2.984A 849.958 92.33% 2539 39.7 45.6°C 0.981
12.274V 4.973V 3.328V 5.027V 920.567 53.3°C 230.29V
110% 68.149A 10.058A 10.017A 2.988A 934.529 91.987% 2550 39.8 46.08°C 0.981
12.271V 4.971V 3.324V 5.021V 1015.943 54.13°C 230.28V
CL1 0.114A 12.432A 12.216A 0A 104.299 83.463% 1421 23.3 41.38°C 0.786
12.299V 4.987V 3.348V 5.102V 124.974 48.07°C 230.38V
CL2 0.114A 20.027A 0A 0A 101.395 82.931% 1166 17.5 40.69°C 0.782
12.302V 4.993V 3.363V 5.107V 122.265 46.65°C 230.38V
CL3 0.113A 0A 19.741A 0A 67.388 76.08% 1143 17 41.35°C 0.74
12.299V 4.989V 3.343V 5.103V 88.574 46.74°C 230.38V
CL4 69.214A 0A 0A 0A 849.607 93.059% 2194 35.6 45.65°C 0.982
12.276V 4.98V 3.341V 5.065V 912.986 51.62°C 230.29V

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 1.206A 0.5A 0.49A 0.196A 19.998 71.712% 0 <6.0 40.9°C 0.811
12.305V 4.996V 3.366V 5.114V 27.886 36.3°C 115.15V
40W 2.656A 0.701A 0.687A 0.294A 39.998 79.804% 0 <6.0 46°C 0.901
12.304V 4.993V 3.363V 5.112V 50.12 37.32°C 115.15V
60W 4.107A 0.902A 0.884A 0.392A 60 83.119% 0 <6.0 46.24°C 0.936
12.303V 4.992V 3.361V 5.109V 72.183 38.26°C 115.15V
80W 5.554A 1.102A 1.08A 0.49A 79.964 85.385% 0 <6.0 47.78°C 0.947
12.302V 4.991V 3.36V 5.107V 93.652 39.24°C 115.15V

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 1.206A 0.5A 0.49A 0.196A 19.999 72.32% 0 <6.0 42.18°C 0.492
12.305V 4.997V 3.365V 5.114V 27.654 36.89°C 230.37V
40W 2.656A 0.701A 0.687A 0.294A 39.997 79.844% 0 <6.0 41.02°C 0.625
12.304V 4.993V 3.362V 5.111V 50.094 37.22°C 230.37V
60W 4.106A 0.902A 0.884A 0.392A 59.996 83.564% 0 <6.0 43.67°C 0.712
12.303V 4.992V 3.361V 5.109V 71.795 38.14°C 230.37V
80W 5.553A 1.102A 1.08A 0.49A 79.949 86.048% 0 <6.0 47.06°C 0.744
12.302V 4.991V 3.36V 5.107V 92.918 39.33°C 230.37V

The results above are not used in the certification process

Ripple Measurements

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 14.1 mV 8.4 mV 5.7 mV 8.9 mV Pass
20% Load 16.4 mV 9.4 mV 6.6 mV 10.4 mV Pass
30% Load 18.0 mV 10.6 mV 7.5 mV 9.3 mV Pass
40% Load 17.7 mV 8.9 mV 6.2 mV 9.3 mV Pass
50% Load 21.2 mV 9.2 mV 5.7 mV 7.2 mV Pass
60% Load 17.1 mV 9.4 mV 5.5 mV 7.1 mV Pass
70% Load 20.3 mV 9.9 mV 5.9 mV 7.2 mV Pass
80% Load 20.1 mV 15.0 mV 14.2 mV 7.5 mV Pass
90% Load 20.6 mV 16.6 mV 15.2 mV 7.7 mV Pass
100% Load 25.9 mV 18.0 mV 16.9 mV 10.6 mV Pass
110% Load 29.1 mV 20.0 mV 18.3 mV 10.6 mV Pass
Crossload 1 15.1 mV 11.4 mV 9.3 mV 10.0 mV Pass
Crossload 2 20.5 mV 15.2 mV 7.1 mV 9.1 mV Pass
Crossload 3 21.4 mV 8.5 mV 13.9 mV 9.3 mV Pass
Crossload 4 22.3 mV 15.1 mV 15.1 mV 10.6 mV Pass

The results above are not used in the certification process

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 13.8 mV 8.2 mV 5.7 mV 9.6 mV Pass
20% Load 16.9 mV 9.2 mV 6.7 mV 10.7 mV Pass
30% Load 19.0 mV 10.6 mV 7.3 mV 9.4 mV Pass
40% Load 18.2 mV 10.2 mV 8.1 mV 9.0 mV Pass
50% Load 20.8 mV 9.6 mV 6.1 mV 7.4 mV Pass
60% Load 17.8 mV 9.6 mV 6.0 mV 7.0 mV Pass
70% Load 20.9 mV 10.1 mV 6.1 mV 7.1 mV Pass
80% Load 19.2 mV 14.9 mV 14.0 mV 7.5 mV Pass
90% Load 20.2 mV 16.5 mV 14.8 mV 8.7 mV Pass
100% Load 26.8 mV 18.0 mV 16.7 mV 10.3 mV Pass
110% Load 28.6 mV 19.9 mV 17.8 mV 10.9 mV Pass
Crossload 1 16.0 mV 11.3 mV 9.3 mV 9.7 mV Pass
Crossload 2 21.5 mV 14.7 mV 7.2 mV 9.3 mV Pass
Crossload 3 20.2 mV 9.0 mV 12.7 mV 8.9 mV Pass
Crossload 4 23.5 mV 14.6 mV 15.1 mV 10.9 mV Pass

The results above are not used in the certification process

ZHONG YUAN POWER SFX-850GM

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