CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
Seasonic Focus GX-850 (ATX v3.0)
Serial Number
Lab IDSS85002331
  • Report: 24PS2331A
  • Receipt Date: Jan 2, 2024
  • Test Date: Jan 17, 2024
  • Report Date: Jan 23, 2024
115V230V
Efficiency Rating
115V230V
Noise Rating
Aristeidis Bitziopoulos, Laboratory General Manager

General Information

DUT Information

BrandSeasonic
Manufacturer (OEM)Seasonic
SeriesFocus GX
Model NumberSSR-850FX3
Serial Number
DUT Notes

DUT Specifications

Rated Voltage (Vrms)100-240
Rated Current (Arms)11-5.5
Rated Frequency (Hz)50-60
Rated Power (W)850
TypeATX12V
Cooling135mm Fluid Dynamic Bearing Fan
(HA13525H12F-Z)
Semi-Passive Operation✓ (selectable)
Cable DesignFully Modular

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps20207030.3
Watts100840153.6
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 (620mm) 1 1 16-18AWG No
4+4 pin EPS12V (710mm) 2 2 16AWG No
6+2 pin PCIe (750mm) 3 3 16-18AWG No
12+4 pin PCIe (760mm) (600W) 1 1 16-28AWG No
SATA (510mm+150mm+150mm+150mm) 2 8 18AWG No
SATA 3.3 (410mm+150mm) 1 2 18AWG No
4-pin Molex (450mm+125mm+125mm) 1 3 18AWG 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 v3.0 Compliance✓

Performance Summary

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)19.8
AC Loss to PWR_OK Hold Up Time (ms)15.6
PWR_OK Inactive to DC Loss Delay (ms)4.2

Vampire Power

Tables

Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 115.15 V 115.13 V 113.85 V 115.17 V 116.15 V PASS
Mains Frequency: 60.00 Hz 59.91 Hz 59.40 Hz 60.01 Hz 60.60 Hz PASS
Mains Voltage CF: 1.415 1.415 1.340 1.416 1.490 PASS
Mains Voltage THD: 0.13 % 0.11 % N/A 0.14 % 2.00 % PASS
Real Power: 0.073 W 0.065 W N/A 0.082 W N/A N/A
Apparent Power: 9.960 W 9.956 W N/A 9.963 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: 230.38 V 230.36 V 227.70 V 230.40 V 232.30 V PASS
Mains Frequency: 50.00 Hz 50.00 Hz 49.50 Hz 50.00 Hz 50.50 Hz PASS
Mains Voltage CF: 1.415 1.415 1.340 1.416 1.490 PASS
Mains Voltage THD: 0.14 % 0.13 % N/A 0.16 % 2.00 % PASS
Real Power: 0.165 W 0.145 W N/A 0.193 W N/A N/A
Apparent Power: 33.331 W 33.316 W N/A 33.341 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 0.231W 55.116% 0.029
5.134V 0.287W 115.17V
2 0.09A 0.462W 72.995% 0.063
5.132V 0.633W 115.17V
3 0.55A 2.817W 81.902% 0.265
5.121V 3.439W 115.17V
4 1A 5.111W 82.33% 0.364
5.11V 6.208W 115.17V
5 1.5A 7.647W 81.835% 0.415
5.097V 9.345W 115.17V
6 3.001A 15.179W 80.041% 0.483
5.059V 18.966W 115.16V
Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.231W 50.495% 0.014
5.134V 0.458W 230.4V
2 0.09A 0.462W 62.315% 0.022
5.132V 0.742W 230.4V
3 0.55A 2.817W 78.709% 0.102
5.121V 3.58W 230.41V
4 1A 5.111W 81.111% 0.168
5.11V 6.303W 230.4V
5 1.5A 7.648W 81.65% 0.227
5.097V 9.367W 230.4V
6 3.001A 15.183W 81.168% 0.332
5.06V 18.71W 230.4V

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% 5.236A 1.987A 1.984A 0.98A 85.007 86.369% 0 <6.0 44.63°C 0.969
12.109V 5.033V 3.326V 5.103V 98.424 40.42°C 115.14V
20% 11.504A 2.983A 2.979A 1.179A 169.98 90.096% 0 <6.0 45.38°C 0.98
12.090V 5.03V 3.323V 5.091V 188.667 40.78°C 115.13V
30% 18.112A 3.481A 3.479A 1.379A 254.999 90.74% 688 16.9 41.16°C 0.985
12.088V 5.028V 3.32V 5.079V 281.025 46.23°C 115.09V
40% 24.724A 3.98A 3.979A 1.579A 340.099 90.802% 687 16.9 41.64°C 0.986
12.089V 5.026V 3.318V 5.067V 374.555 47.27°C 115.07V
50% 30.991A 4.978A 4.979A 1.781A 425.144 90.456% 683 16.7 42.54°C 0.987
12.088V 5.024V 3.314V 5.054V 469.997 48.57°C 115.04V
60% 37.215A 5.978A 5.981A 1.984A 509.685 89.843% 677 16.4 42.73°C 0.988
12.089V 5.02V 3.311V 5.041V 567.308 49.33°C 115.02V
70% 43.502A 6.98A 6.986A 2.188A 595.002 89.074% 869 16.1 43.29°C 0.99
12.089V 5.017V 3.308V 5.028V 667.974 50.3°C 114.99V
80% 49.790A 7.98A 7.99A 2.292A 679.812 88.258% 1075 31.3 43.77°C 0.991
12.089V 5.013V 3.304V 5.018V 770.261 51.79°C 114.96V
90% 56.478A 8.483A 8.482A 2.397A 765.235 87.377% 1330 37.4 44.36°C 0.992
12.088V 5.011V 3.301V 5.008V 875.797 53.41°C 114.93V
100% 62.895A 8.987A 9.006A 3.01A 850.052 86.353% 1533 41.5 45.42°C 0.992
12.089V 5.008V 3.298V 4.984V 984.392 55.47°C 114.89V
110% 69.176A 9.992A 10.108A 3.015A 934.595 85.144% 1628 44.6 46.76°C 0.993
12.090V 5.004V 3.294V 4.976V 1097.672 57.7°C 114.87V
CL1 0.116A 12.006A 11.974A 0A 101.309 84.607% 600 12.3 41.07°C 0.974
12.100V 5.014V 3.315V 5.117V 119.741 46.55°C 115.14V
CL2 0.116A 19.957A 0A 0A 101.401 83.416% 772 20.8 40.39°C 0.975
12.097V 5.011V 3.326V 5.122V 121.563 47.46°C 115.13V
CL3 0.116A 0A 19.929A 0A 67.397 77.984% 779 21.2 40.06°C 0.965
12.103V 5.029V 3.311V 5.118V 86.425 49.08°C 115.14V
CL4 70.304A 0A 0A 0A 849.775 87.094% 1515 41.3 45.59°C 0.992
12.087V 5.023V 3.308V 5.07V 975.697 56.54°C 114.89V

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% 5.236A 1.988A 1.985A 0.98A 85.006 87.548% 0 <6.0 44.67°C 0.852
12.109V 5.032V 3.326V 5.102V 97.104 40.46°C 230.4V
20% 11.502A 2.984A 2.98A 1.179A 169.971 91.489% 0 <6.0 45.11°C 0.926
12.090V 5.029V 3.323V 5.09V 185.786 40.59°C 230.39V
30% 18.110A 3.482A 3.479A 1.379A 254.986 92.317% 688 16.9 41.13°C 0.951
12.088V 5.027V 3.32V 5.079V 276.201 46.18°C 230.38V
40% 24.721A 3.98A 3.98A 1.579A 340.077 92.616% 688 16.9 41.96°C 0.963
12.089V 5.026V 3.317V 5.067V 367.187 47.48°C 230.37V
50% 30.983A 4.978A 4.98A 1.781A 425.066 92.514% 684 16.7 42.22°C 0.969
12.089V 5.023V 3.314V 5.055V 459.468 48.25°C 230.36V
60% 37.208A 5.978A 5.982A 1.984A 509.604 92.167% 679 16.4 42.74°C 0.974
12.088V 5.02V 3.311V 5.042V 552.918 49.34°C 230.35V
70% 43.496A 6.979A 6.986A 2.187A 594.937 91.699% 872 24.6 43.44°C 0.977
12.089V 5.016V 3.307V 5.03V 648.791 50.47°C 230.33V
80% 49.789A 7.979A 7.991A 2.292A 679.771 91.167% 1080 31.4 43.85°C 0.98
12.088V 5.013V 3.304V 5.019V 745.632 51.89°C 230.32V
90% 56.477A 8.482A 8.482A 2.396A 765.213 90.638% 1334 37.5 44.2°C 0.982
12.088V 5.011V 3.301V 5.009V 844.254 53.28°C 230.31V
100% 62.898A 8.986A 9.006A 3.009A 850.033 90.022% 1532 41.5 45.21°C 0.983
12.088V 5.008V 3.298V 4.986V 944.248 55.28°C 230.29V
110% 69.179A 9.991A 10.108A 3.014A 934.6 89.313% 1627 44.6 46.59°C 0.984
12.090V 5.005V 3.294V 4.978V 1046.432 57.52°C 230.28V
CL1 0.116A 11.996A 11.97A 0A 101.298 85.735% 615 13.2 41.18°C 0.878
12.094V 5.018V 3.316V 5.117V 118.152 46.62°C 230.39V
CL2 0.116A 19.954A 0A 0A 101.401 84.493% 772 20.8 40.31°C 0.88
12.096V 5.012V 3.326V 5.122V 120.014 47.44°C 230.4V
CL3 0.116A 0A 19.929A 0A 67.395 78.865% 782 21.2 40.17°C 0.829
12.103V 5.029V 3.311V 5.118V 85.459 49.19°C 230.4V
CL4 70.309A 0A 0A 0A 849.718 90.695% 1517 41.4 45.59°C 0.983
12.086V 5.023V 3.308V 5.071V 936.893 56.57°C 230.3V

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 0.496A 0.495A 0.195A 20.009 73.239% 0 <6.0 39.72°C 0.88
12.051V 5.039V 3.33V 5.128V 27.317 36.65°C 115.17V
40W 2.700A 0.695A 0.694A 0.293A 40.006 78.801% 0 <6.0 41.07°C 0.94
12.108V 5.038V 3.329V 5.124V 50.767 37.62°C 115.16V
60W 4.174A 0.894A 0.892A 0.391A 60.005 83.456% 0 <6.0 42.28°C 0.959
12.108V 5.036V 3.328V 5.12V 71.9 38.48°C 115.15V
80W 5.644A 1.093A 1.091A 0.489A 79.973 86.364% 0 <6.0 43.39°C 0.968
12.109V 5.035V 3.328V 5.116V 92.601 39.46°C 115.14V

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 0.496A 0.495A 0.195A 20.006 73.71% 0 <6.0 39.79°C 0.516
12.053V 5.04V 3.33V 5.127V 27.141 36.7°C 230.4V
40W 2.700A 0.695A 0.694A 0.293A 40.004 79.637% 0 <6.0 40.64°C 0.704
12.109V 5.038V 3.329V 5.123V 50.234 37.34°C 230.4V
60W 4.173A 0.894A 0.892A 0.391A 60.002 84.497% 0 <6.0 41.8°C 0.789
12.109V 5.035V 3.328V 5.12V 71.008 38.29°C 230.4V
80W 5.644A 1.093A 1.091A 0.489A 79.968 87.496% 0 <6.0 42.98°C 0.842
12.110V 5.034V 3.327V 5.116V 91.396 39.17°C 230.4V

The results above are not used in the certification process

Ripple Measurements

Test12V5V3.3V5VSBPass/Fail
10% Load5.44mV5.81mV7.22mV8.10mVPass
20% Load10.80mV7.65mV6.61mV7.64mVPass
30% Load7.53mV6.84mV8.24mV9.63mVPass
40% Load7.58mV7.29mV9.46mV10.70mVPass
50% Load8.65mV8.87mV10.78mV11.77mVPass
60% Load9.56mV8.72mV11.34mV12.33mVPass
70% Load9.52mV9.23mV12.26mV13.55mVPass
80% Load10.33mV10.35mV16.89mV15.33mVPass
90% Load11.19mV10.56mV17.14mV17.37mVPass
100% Load16.18mV12.14mV19.19mV21.99mVPass
110% Load16.21mV13.11mV20.20mV25.56mVPass
Crossload119.62mV8.54mV13.58mV8.91mVPass
Crossload216.25mV8.88mV6.10mV8.15mVPass
Crossload36.46mV6.88mV15.77mV9.32mVPass
Crossload416.68mV10.78mV13.85mV19.38mVPass

The results above are not used in the certification process

Test12V5V3.3V5VSBPass/Fail
10% Load4.53mV5.20mV6.21mV7.49mVPass
20% Load11.82mV7.80mV6.51mV7.34mVPass
30% Load8.48mV6.68mV7.98mV9.17mVPass
40% Load8.09mV8.01mV9.16mV10.55mVPass
50% Load8.55mV8.47mV10.43mV11.97mVPass
60% Load8.80mV9.54mV11.59mV12.38mVPass
70% Load9.21mV9.23mV12.51mV13.60mVPass
80% Load10.02mV10.46mV16.33mV14.42mVPass
90% Load10.64mV10.71mV17.44mV16.30mVPass
100% Load16.43mV12.73mV18.61mV19.58mVPass
110% Load18.21mV13.01mV20.25mV21.45mVPass
Crossload122.87mV8.24mV13.14mV8.48mVPass
Crossload219.06mV7.65mV5.90mV7.74mVPass
Crossload35.44mV6.58mV16.12mV9.68mVPass
Crossload416.64mV10.59mV13.90mV17.83mVPass

The results above are not used in the certification process

Seasonic Focus GX-850 (ATX v3.0)

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