CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
Seasonic Core GX-850 ATX3 (#2)
Serial Number-
Lab IDSS85002750
  • Report: 25PS2750A
  • Receipt Date: Feb 11, 2025
  • Test Date: Feb 20, 2025
  • Report Date: Mar 6, 2025
115V230V
Efficiency Rating
115V230V
Noise Rating
Aristeidis Bitziopoulos, Laboratory General Manager

General Information

DUT Information

BrandSeasonic
Manufacturer (OEM)Seasonic
SeriesCore
Model NumberSRP-CGX851-A5A32SF
Serial Number-
DUT Notes

DUT Specifications

Rated Voltage (Vrms)100-240
Rated Current (Arms)5.5-11
Rated Frequency (Hz)50-60
Rated Power (W)850
TypeATX12V
Cooling120mm Fluid Dynamic Bearing Fan (HA1225H12F-Z)
Semi-Passive Operation✗
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 (750mm) 2 2 16AWG No
2x 6+2 pin PCIe (710mm) 1 2 16-18AWG No
6+2 pin PCIe (750mm) 1 1 16-18AWG No
12+4 pin PCIe (700mm) (600W) 1 1 16-28AWG No
SATA (455mm+155mm+155mm) 2 6 18AWG No
4-pin Molex (455mm+125mm+125mm) 1 1 18AWG No

Parts Description

General Data
Manufacturer (OEM) Seasonic
PCB Type Double-Sided
Primary Side
Transient Filter 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV
Inrush Protection 1x NTC Thermistor MF72-5D20L (5 Ohm) & Relay
Bridge Rectifier(s)

2x GBU1508S (800V, 15A @ 100°C)
APFC MOSFETs

2x CRMicro CRJS140N65G2F (650V, 15A, @ 100°C, Rds(on): 140mOhm)
APFC Boost Diode

1x Global Power Technology G4S06508DT (650V, 8A, @ 152°C)
Bulk Cap(s)

1x Teapo (400V, 470uF, 2,000h @ 105°C, LG)
Main Switchers

4x Haujing Microelectronics CS13N50AOR (500V, 8.2A, @ 100°C, Rds(on): 0.5Ohm)
APFC Controller Champion CM6500UNX
Resonant Controller Champion CU6901VPA
Topology

Primary side: APFC, Full-Bridge & LLC Resonant converter Secondary side: Synchronous Rectification & DC-DC converters
Secondary Side
+12V MOSFETs 4x 33208B
5V & 3.3V DC-DC Converters: 6x UBIQ QN3106M6N (30V, 57A @ 100°C, Rds(on): 3.8mOhm) PWM Controller(s): UPI-semi uP3861P
Filtering Capacitors

Electrolytic: 11x Teapo (2-5,000h @ 105°C, SC), Polymer: 21x
Supervisor IC Weltrend WT7527RA (OVP, UVP, OCP, SCP, PG)
Fan Controller Nuvoton M031FB0AE
Fan Model Hong Hua HA1225H12F-Z (120mm, 12V, 0.58A, Fluid Dynamic Bearing Fan)
5VSB Circuit
Low Side Rectifier
Dongke DK5V45R10S (45V, Rds(on): 10mOhm)
Standby PWM Controller Excelliance MOS EM8569C

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)18
AC Loss to PWR_OK Hold Up Time (ms)14.7
PWR_OK Inactive to DC Loss Delay (ms)3.3

Vampire Power

Tables

Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 115.05 V 115.01 V 113.85 V 115.08 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 0.18 % 2.00 % PASS
Real Power: 0.067 W 0.005 W N/A 0.109 W N/A N/A
Apparent Power: 11.279 W 10.688 W N/A 11.864 W N/A N/A
Power Factor: 0.006 N/A N/A N/A N/A N/A
Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 231.01 V 230.90 V 227.70 V 231.08 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 0.26 % 2.00 % PASS
Real Power: 0.174 W 0.134 W N/A 0.299 W N/A N/A
Apparent Power: 36.075 W 35.442 W N/A 36.840 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 0.228W 62.324% 0.035
5.072V 0.366W 114.91V
2 0.09A 0.456W 70.859% 0.061
5.07V 0.644W 114.92V
3 0.55A 2.777W 80.78% 0.257
5.049V 3.438W 114.91V
4 1A 5.03W 81.15% 0.356
5.03V 6.198W 114.91V
5 1.5A 7.512W 80.783% 0.405
5.007V 9.299W 114.92V
6 3A 14.82W 78.876% 0.481
4.94V 18.79W 114.91V
Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.228W 48.061% 0.013
5.072V 0.475W 229.89V
2 0.09A 0.456W 60.201% 0.021
5.07V 0.759W 229.88V
3 0.55A 2.777W 77.705% 0.097
5.049V 3.575W 229.88V
4 1A 5.03W 80.17% 0.16
5.029V 6.274W 229.88V
5 1.5A 7.512W 80.69% 0.206
5.007V 9.31W 229.89V
6 3A 14.822W 80.089% 0.317
4.941V 18.508W 229.88V

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% 5.234A 1.992A 1.993A 0.996A 84.999 86.01% 836 25.4 40.01°C 0.947
12.114V 5.019V 3.311V 5.021V 98.824 42.99°C 114.88V
20% 11.500A 2.99A 2.992A 1.199A 169.931 90.3% 833 24.8 40.59°C 0.966
12.089V 5.016V 3.309V 5.006V 188.184 44.66°C 114.86V
30% 18.115A 3.49A 3.493A 1.403A 254.933 91.253% 827 24.1 41.43°C 0.975
12.083V 5.015V 3.307V 4.991V 279.371 47.16°C 114.83V
40% 24.740A 3.99A 3.994A 1.608A 340.019 91.173% 863 24.8 41.81°C 0.979
12.078V 5.013V 3.305V 4.975V 372.941 49.36°C 114.8V
50% 30.997A 4.99A 4.997A 1.815A 424.79 90.753% 855 24.3 42.22°C 0.982
12.074V 5.01V 3.302V 4.959V 468.074 51.63°C 114.77V
60% 37.238A 5.991A 6.002A 2A 509.223 90.222% 847 26.1 42.68°C 0.984
12.072V 5.008V 3.299V 4.943V 564.41 54.26°C 114.74V
70% 43.544A 6.993A 7.009A 2.233A 594.641 89.506% 836 25.4 43.37°C 0.986
12.069V 5.006V 3.296V 4.925V 664.363 56.84°C 114.71V
80% 49.848A 7.994A 8.016A 2.341A 679.465 88.648% 824 23.7 43.79°C 0.989
12.068V 5.003V 3.293V 4.913V 766.477 60.38°C 114.67V
90% 56.560A 8.496A 8.506A 2.449A 764.898 87.739% 1138 33.4 44.12°C 0.991
12.065V 5.001V 3.291V 4.9V 871.788 60.29°C 114.64V
100% 63.030A 8.998A 9.027A 3.084A 849.708 86.819% 1729 43.7 45.73°C 0.992
12.058V 5V 3.29V 4.864V 978.712 56.94°C 114.6V
110% 69.380A 10A 10.127A 3.088A 934.288 85.82% 2157 49.8 46.22°C 0.993
12.050V 4.999V 3.288V 4.857V 1088.665 56.29°C 114.57V
CL1 0.115A 12.023A 12.049A 0A 101.287 83.573% 881 26.7 40.57°C 0.956
12.125V 5.006V 3.295V 5.056V 121.196 49.87°C 114.87V
CL2 0.114A 19.988A 0A 0A 101.342 82.657% 880 26.6 40.94°C 0.954
12.120V 5.001V 3.3V 5.059V 122.603 48.74°C 114.87V
CL3 0.114A 0A 20.061A 0A 67.393 76.45% 881 26.7 40.7°C 0.943
12.118V 5.007V 3.29V 5.059V 88.153 46.67°C 114.88V
CL4 70.478A 0A 0A 0A 849.476 87.683% 1518 41.6 45.17°C 0.991
12.053V 5.008V 3.302V 5.017V 968.815 55.16°C 114.61V

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% 5.234A 1.992A 1.993A 0.996A 84.999 86.887% 837 25.5 40.33°C 0.832
12.114V 5.019V 3.311V 5.021V 97.827 42.4°C 229.88V
20% 11.500A 2.99A 2.992A 1.199A 169.934 91.573% 833 24.8 40.79°C 0.912
12.089V 5.017V 3.309V 5.006V 185.569 43.54°C 229.86V
30% 18.116A 3.49A 3.493A 1.403A 254.941 92.65% 827 24.1 41.12°C 0.94
12.082V 5.015V 3.307V 4.991V 275.165 45.29°C 229.85V
40% 24.741A 3.99A 3.995A 1.608A 340.03 92.857% 863 24.8 41.99°C 0.955
12.078V 5.013V 3.305V 4.975V 366.187 46.84°C 229.84V
50% 31.003A 4.99A 4.997A 1.815A 424.828 92.655% 855 24.3 42.02°C 0.963
12.073V 5.011V 3.302V 4.959V 458.503 48.79°C 229.82V
60% 37.244A 5.991A 6.002A 2A 509.266 92.329% 846 26.1 42.59°C 0.969
12.070V 5.008V 3.299V 4.944V 551.578 51.28°C 229.8V
70% 43.550A 6.993A 7.009A 2.233A 594.682 91.873% 837 25.5 43.06°C 0.973
12.068V 5.006V 3.296V 4.925V 647.285 53.51°C 229.79V
80% 49.856A 7.993A 8.016A 2.341A 679.508 91.309% 825 23.9 43.68°C 0.977
12.067V 5.003V 3.293V 4.913V 744.187 55.81°C 229.77V
90% 56.572A 8.495A 8.506A 2.449A 764.932 90.731% 1142 33.9 44.42°C 0.979
12.063V 5.002V 3.292V 4.901V 843.081 55.75°C 229.76V
100% 63.041A 8.997A 9.027A 3.084A 849.738 90.078% 1718 43.7 45.05°C 0.981
12.056V 5.001V 3.29V 4.864V 943.334 53.95°C 229.74V
110% 69.395A 10A 10.128A 3.088A 934.312 89.382% 2158 49.8 46.69°C 0.982
12.048V 4.999V 3.288V 4.857V 1045.308 55.01°C 229.72V
CL1 0.116A 12.025A 12.051A 0A 101.291 84.516% 882 26.8 41.11°C 0.865
12.125V 5.005V 3.294V 5.055V 119.846 51.1°C 229.87V
CL2 0.114A 19.992A 0A 0A 101.343 83.506% 880 26.6 41.66°C 0.866
12.122V 5V 3.299V 5.058V 121.361 49.79°C 229.87V
CL3 0.114A 0A 20.067A 0A 67.396 77.035% 882 26.8 41.19°C 0.815
12.120V 5.007V 3.289V 5.059V 87.488 48.15°C 229.88V
CL4 70.486A 0A 0A 0A 849.501 90.804% 1518 41.6 45.01°C 0.98
12.052V 5.007V 3.301V 5.017V 935.543 52.14°C 229.75V

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 1.240A 0.498A 0.498A 0.198A 20.002 73.706% 850 25.8 36.48°C 0.849
11.978V 5.022V 3.314V 5.062V 27.137 37.11°C 114.9V
40W 2.728A 0.697A 0.697A 0.297A 40 81.408% 852 25.8 37.15°C 0.91
11.984V 5.021V 3.313V 5.056V 49.134 38.87°C 114.9V
60W 4.172A 0.896A 0.896A 0.396A 59.997 83.184% 836 25.1 38.54°C 0.933
12.113V 5.02V 3.313V 5.05V 72.127 41.26°C 114.89V
80W 5.639A 1.096A 1.096A 0.496A 79.939 86.126% 835 25.4 39.41°C 0.945
12.114V 5.02V 3.312V 5.045V 92.817 42.17°C 114.88V

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 1.240A 0.498A 0.498A 0.198A 19.996 74.948% 853 24.6 36.19°C 0.494
11.979V 5.022V 3.314V 5.062V 26.681 37.23°C 229.9V
40W 2.727A 0.697A 0.697A 0.297A 39.994 82.45% 854 24.5 37.1°C 0.676
11.985V 5.021V 3.314V 5.056V 48.507 38.07°C 229.89V
60W 4.171A 0.896A 0.896A 0.396A 59.993 84.123% 836 25.4 38.25°C 0.771
12.113V 5.021V 3.313V 5.05V 71.317 39.73°C 229.88V
80W 5.639A 1.095A 1.096A 0.496A 79.936 86.846% 836 25.4 39.25°C 0.822
12.113V 5.02V 3.312V 5.044V 92.044 41.32°C 229.88V

The results above are not used in the certification process

Ripple Measurements

Test12V5V3.3V5VSBPass/Fail
10% Load13.66mV14.46mV14.89mV15.24mVPass
20% Load26.79mV14.82mV15.55mV16.06mVPass
30% Load18.37mV17.32mV17.55mV16.11mVPass
40% Load16.88mV15.74mV15.24mV16.26mVPass
50% Load17.70mV14.46mV14.53mV16.98mVPass
60% Load20.05mV15.48mV15.24mV18.16mVPass
70% Load18.52mV15.89mV16.01mV19.39mVPass
80% Load20.05mV16.25mV17.44mV17.75mVPass
90% Load19.54mV17.73mV18.31mV18.41mVPass
100% Load28.89mV18.67mV20.21mV21.59mVPass
110% Load28.77mV17.84mV19.25mV19.54mVPass
Crossload115.46mV16.26mV18.66mV17.03mVPass
Crossload215.30mV20.28mV16.83mV16.52mVPass
Crossload314.99mV16.66mV23.22mV18.01mVPass
Crossload429.35mV16.29mV16.64mV18.33mVPass

The results above are not used in the certification process

Test12V5V3.3V5VSBPass/Fail
10% Load14.94mV15.17mV16.06mV16.06mVPass
20% Load31.70mV15.94mV16.06mV16.78mVPass
30% Load18.05mV17.27mV18.21mV16.88mVPass
40% Load18.16mV17.11mV17.24mV17.34mVPass
50% Load17.91mV16.09mV15.96mV19.23mVPass
60% Load18.26mV16.61mV16.68mV18.93mVPass
70% Load19.03mV18.24mV16.73mV21.95mVPass
80% Load21.08mV17.22mV17.90mV18.47mVPass
90% Load19.70mV17.22mV18.57mV19.59mVPass
100% Load29.48mV18.24mV20.05mV21.04mVPass
110% Load31.20mV18.59mV19.92mV21.78mVPass
Crossload117.63mV18.14mV19.14mV17.81mVPass
Crossload216.06mV23.04mV18.36mV17.24mVPass
Crossload315.66mV17.22mV24.96mV18.16mVPass
Crossload429.31mV16.35mV17.85mV19.16mVPass

The results above are not used in the certification process

Seasonic Core GX-850 ATX3 (#2)

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
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