CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
Seasonic Core GX-750 ATX3
Serial Number-
Lab IDSS75002753
  • Report: 25PS2753A
  • Receipt Date: Feb 11, 2025
  • Test Date: Feb 26, 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-CGX751-A5A32SF
Serial Number-
DUT Notes

DUT Specifications

Rated Voltage (Vrms)100-240
Rated Current (Arms)5-10
Rated Frequency (Hz)50-60
Rated Power (W)750
TypeATX12V
Cooling120mm Fluid Dynamic Bearing Fan (HA1225H12F-Z)
Semi-Passive Operation✗
Cable DesignFully Modular

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps20206230.3
Watts100744153.6
Total Max. Power (W)750

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 (615mm) 1 1 16-18AWG No
4+4 pin EPS12V (750mm) 2 2 16AWG No
2x 6+2 pin PCIe (700mm) 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)

1x GBU1508S (800V, 15A @ 100°C)
APFC MOSFETs

2x CRMicro CRJS190N65GCF (650V, 13A, @ 100°C, Rds(on): 210mOhm)
APFC Boost Diode

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

1x Teapo (400V, 390uF, 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)15.9
AC Loss to PWR_OK Hold Up Time (ms)11.7
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: 115.04 V 115.01 V 113.85 V 115.09 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 % 0.09 % N/A 0.19 % 2.00 % PASS
Real Power: 0.075 W 0.006 W N/A 0.107 W N/A N/A
Apparent Power: 11.707 W 11.119 W N/A 12.307 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: 231.00 V 230.89 V 227.70 V 231.06 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 1.418 1.490 PASS
Mains Voltage THD: 0.17 % 0.14 % N/A 0.27 % 2.00 % PASS
Real Power: 0.175 W 0.133 W N/A 0.230 W N/A N/A
Apparent Power: 36.482 W 35.855 W N/A 37.170 W N/A N/A
Power Factor: 0.004 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 62.638% 0.034
5.063V 0.364W 114.92V
2 0.09A 0.455W 70.998% 0.06
5.06V 0.642W 114.91V
3 0.55A 2.771W 80.889% 0.255
5.039V 3.425W 114.91V
4 1A 5.019W 80.896% 0.358
5.019V 6.204W 114.92V
5 1.5A 7.496W 81.053% 0.408
4.997V 9.248W 114.91V
6 3A 14.786W 78.953% 0.487
4.929V 18.729W 114.91V
Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.228W 48.068% 0.013
5.063V 0.475W 229.9V
2 0.09A 0.456W 59.986% 0.021
5.06V 0.76W 229.9V
3 0.55A 2.771W 77.99% 0.095
5.039V 3.554W 229.89V
4 1A 5.019W 80.101% 0.158
5.019V 6.267W 229.89V
5 1.5A 7.495W 80.519% 0.205
4.996V 9.308W 229.89V
6 3A 14.783W 80.153% 0.317
4.928V 18.444W 229.89V

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% 4.410A 1.991A 1.996A 0.997A 74.99 85.095% 864 24.9 40.39°C 0.947
12.107V 5.02V 3.306V 5.012V 88.126 41.46°C 114.88V
20% 9.850A 2.989A 2.996A 1.201A 149.908 89.88% 862 24.7 40.57°C 0.966
12.083V 5.018V 3.304V 4.997V 166.789 43.66°C 114.86V
30% 15.637A 3.488A 3.498A 1.405A 224.907 90.973% 857 24.1 41.36°C 0.974
12.078V 5.016V 3.302V 4.982V 247.221 46.31°C 114.83V
40% 21.434A 3.988A 3.999A 1.611A 299.989 91.167% 850 25.8 41.71°C 0.981
12.074V 5.014V 3.3V 4.967V 329.054 47.94°C 114.82V
50% 26.829A 4.988A 5.002A 1.818A 374.316 90.867% 843 26 42.18°C 0.982
12.069V 5.012V 3.298V 4.951V 411.939 49.78°C 114.78V
60% 32.274A 5.988A 6.007A 2A 449.115 90.415% 835 25.2 42.79°C 0.984
12.066V 5.01V 3.296V 4.937V 496.727 53.56°C 114.75V
70% 37.717A 6.99A 7.014A 2.236A 524.178 89.817% 825 23.9 43.05°C 0.986
12.065V 5.007V 3.293V 4.918V 583.608 56.96°C 114.73V
80% 43.228A 7.99A 8.021A 2.344A 599.369 89.078% 858 24.3 43.57°C 0.988
12.063V 5.005V 3.291V 4.906V 672.857 59.6°C 114.7V
90% 49.093A 8.491A 8.51A 2.451A 674.415 88.37% 1464 40.2 44.56°C 0.989
12.057V 5.004V 3.29V 4.896V 763.177 56.24°C 114.67V
100% 54.762A 8.993A 9.03A 3.086A 749.65 87.576% 1583 42.3 45.48°C 0.991
12.052V 5.003V 3.289V 4.86V 855.997 57.56°C 114.64V
110% 60.312A 9.989A 10.125A 3.09A 824.677 86.816% 2147 49.7 46.09°C 0.991
12.044V 5.004V 3.289V 4.854V 949.927 55.88°C 114.61V
CL1 0.114A 12.018A 12.055A 0A 101.279 84.015% 905 26.6 40.4°C 0.958
12.114V 5.008V 3.293V 5.047V 120.547 48.93°C 114.87V
CL2 0.114A 19.98A 0A 0A 101.339 82.969% 903 26.4 40.05°C 0.957
12.110V 5.003V 3.299V 5.05V 122.142 47.04°C 114.88V
CL3 0.114A 0A 20.068A 0A 67.392 76.962% 905 26.6 40°C 0.947
12.109V 5.012V 3.289V 5.05V 87.564 45.75°C 114.88V
CL4 62.210A 0A 0A 0A 749.496 88.35% 1539 42.9 45.81°C 0.99
12.048V 5.014V 3.3V 5.014V 848.335 54.11°C 114.65V

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% 4.410A 1.992A 1.996A 0.998A 74.997 86.01% 864 24.9 40.19°C 0.787
12.109V 5.019V 3.305V 5.011V 87.192 42.7°C 229.88V
20% 9.851A 2.989A 2.997A 1.201A 149.927 91.216% 861 24.6 40.74°C 0.894
12.084V 5.018V 3.304V 4.996V 164.366 42.91°C 229.87V
30% 15.641A 3.489A 3.498A 1.405A 224.927 92.504% 856 24.2 41.28°C 0.931
12.076V 5.016V 3.302V 4.982V 243.154 44.76°C 229.85V
40% 21.438A 3.989A 3.999A 1.611A 300.016 92.874% 850 25.8 41.95°C 0.948
12.073V 5.014V 3.3V 4.967V 323.035 46.77°C 229.84V
50% 26.835A 4.988A 5.003A 1.818A 374.386 92.763% 842 25.9 42.38°C 0.958
12.069V 5.012V 3.298V 4.951V 403.591 48.68°C 229.83V
60% 32.281A 5.988A 6.008A 2A 449.171 92.526% 834 24.9 42.55°C 0.965
12.065V 5.01V 3.296V 4.936V 485.454 50.96°C 229.82V
70% 37.726A 6.991A 7.015A 2.237A 524.235 92.168% 825 23.9 43.42°C 0.969
12.064V 5.007V 3.293V 4.918V 568.781 53.15°C 229.81V
80% 43.239A 7.99A 8.022A 2.344A 599.438 91.726% 858 24.3 43.98°C 0.973
12.062V 5.005V 3.291V 4.906V 653.51 55.54°C 229.79V
90% 49.108A 8.491A 8.511A 2.451A 674.491 91.289% 1457 39.6 44.36°C 0.975
12.055V 5.004V 3.29V 4.895V 738.846 53.05°C 229.78V
100% 54.774A 8.994A 9.032A 3.087A 749.723 90.787% 1583 42.3 45.23°C 0.977
12.050V 5.002V 3.288V 4.859V 825.8 54.93°C 229.76V
110% 60.339A 9.993A 10.125A 3.089A 824.712 90.412% 2145 49.6 43.7°C 0.979
12.039V 5.002V 3.289V 4.855V 912.2 51.95°C 229.74V
CL1 0.114A 12.023A 12.055A 0A 101.282 85.094% 905 26.6 40.19°C 0.851
12.113V 5.006V 3.293V 5.047V 119.023 48.1°C 229.87V
CL2 0.114A 19.991A 0A 0A 101.338 83.991% 903 26.4 40.73°C 0.853
12.111V 5V 3.299V 5.05V 120.654 45.58°C 229.87V
CL3 0.114A 0A 20.07A 0A 67.393 77.745% 906 26.7 40.48°C 0.787
12.109V 5.01V 3.289V 5.05V 86.685 45.87°C 229.88V
CL4 62.211A 0A 0A 0A 749.526 91.474% 1540 43 45.14°C 0.977
12.048V 5.011V 3.3V 5.014V 819.389 51.42°C 229.76V

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 0.499A 0.198A 19.99 74.624% 880 26.6 36.09°C 0.818
11.973V 5.022V 3.308V 5.053V 26.788 38.75°C 114.91V
40W 2.728A 0.697A 0.698A 0.297A 39.988 82.014% 882 26.8 37.63°C 0.907
11.977V 5.022V 3.307V 5.047V 48.757 39.83°C 114.9V
60W 4.172A 0.896A 0.898A 0.397A 59.986 83.541% 863 24.8 38.85°C 0.935
12.108V 5.022V 3.307V 5.041V 71.805 40.21°C 114.89V
80W 5.640A 1.095A 1.097A 0.496A 79.921 86.124% 862 24.7 39.41°C 0.948
12.107V 5.021V 3.307V 5.035V 92.797 40.17°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
20W 1.240A 0.498A 0.499A 0.198A 19.999 75.122% 880 26.6 35.99°C 0.441
11.973V 5.022V 3.308V 5.052V 26.621 39.32°C 229.89V
40W 2.729A 0.697A 0.699A 0.297A 39.996 82.833% 881 26.7 37.27°C 0.627
11.977V 5.022V 3.307V 5.046V 48.287 40.13°C 229.88V
60W 4.173A 0.896A 0.898A 0.397A 59.994 84.497% 862 24.7 38.01°C 0.738
12.108V 5.021V 3.307V 5.04V 71.004 40.51°C 229.88V
80W 5.642A 1.095A 1.098A 0.496A 79.935 87.163% 861 24.6 39.39°C 0.799
12.107V 5.021V 3.306V 5.034V 91.707 40.68°C 229.88V

The results above are not used in the certification process

Ripple Measurements

Test12V5V3.3V5VSBPass/Fail
10% Load16.32mV16.71mV15.30mV16.52mVPass
20% Load37.48mV15.84mV15.19mV15.55mVPass
30% Load21.93mV17.47mV16.63mV17.80mVPass
40% Load20.11mV15.63mV15.14mV17.49mVPass
50% Load20.92mV16.30mV16.06mV18.06mVPass
60% Load20.16mV15.94mV15.50mV16.42mVPass
70% Load22.46mV16.45mV15.40mV18.67mVPass
80% Load22.31mV17.78mV17.29mV18.11mVPass
90% Load22.36mV17.47mV16.73mV18.31mVPass
100% Load31.17mV18.36mV17.13mV19.66mVPass
110% Load32.55mV17.97mV17.41mV20.30mVPass
Crossload118.59mV17.53mV16.39mV16.44mVPass
Crossload217.29mV19.46mV15.81mV16.93mVPass
Crossload315.81mV17.68mV17.80mV16.11mVPass
Crossload431.16mV17.22mV16.89mV18.45mVPass

The results above are not used in the certification process

Test12V5V3.3V5VSBPass/Fail
10% Load15.09mV15.63mV15.19mV15.81mVPass
20% Load41.78mV15.74mV14.94mV16.21mVPass
30% Load24.23mV15.68mV15.14mV15.70mVPass
40% Load18.47mV15.33mV15.30mV16.83mVPass
50% Load18.93mV14.30mV14.02mV16.21mVPass
60% Load19.08mV18.29mV17.55mV18.62mVPass
70% Load19.90mV16.14mV14.43mV17.44mVPass
80% Load21.34mV16.25mV16.06mV17.39mVPass
90% Load21.38mV17.17mV16.42mV20.15mVPass
100% Load32.07mV18.54mV18.65mV19.77mVPass
110% Load32.83mV18.00mV16.33mV19.28mVPass
Crossload116.86mV16.75mV16.01mV16.22mVPass
Crossload215.76mV18.49mV14.43mV15.70mVPass
Crossload315.55mV17.11mV18.92mV16.47mVPass
Crossload431.02mV16.51mV17.31mV18.93mVPass

The results above are not used in the certification process

Seasonic Core GX-750 ATX3

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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