CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
ASRock Steel Legend SL-750G
Serial Number
Lab IDAR75002669
  • Report: 24PS2669A
  • Receipt Date: Nov 22, 2024
  • Test Date: Dec 3, 2024
  • Report Date: Dec 6, 2024
115V230V
Efficiency Rating
115V230V
Noise Rating
Aristeidis Bitziopoulos, Laboratory General Manager

General Information

DUT Information

BrandASRock
Manufacturer (OEM)HEC
SeriesSteel Legend
Model NumberSL-750G
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
Cooling135mm Fluid Dynamic Bearing Fan (RL4ZS1352512HH)
Semi-Passive Operation✓ (selectable)
Cable Design

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps202062.530.3
Watts120750153.6
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 (600mm) 1 1 18AWG No
4+4 pin EPS12V (700mm) 2 2 18AWG No
6+2 pin PCIe (590mm+140mm) 1 2 18AWG No
6+2 pin PCIe (590mm) 1 1 18AWG No
12+4 pin PCIe (640mm) (600W) 1 1 16-28AWG No
SATA (450mm+120mm+120mm) 3 9 18AWG No
4-pin Molex (440mm+110mm+110mm) 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 v3.1 PSU Power Excursion✓

Performance Summary

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)16.3
AC Loss to PWR_OK Hold Up Time (ms)13.7
PWR_OK Inactive to DC Loss Delay (ms)2.6

Vampire Power

Tables

Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 115.05 V 115.02 V 113.85 V 115.09 V 116.15 V PASS
Mains Frequency: 60.00 Hz 59.97 Hz 59.40 Hz 60.02 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: 0.041 W -0.006 W N/A 0.080 W N/A N/A
Apparent Power: 8.148 W 8.090 W N/A 8.202 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: 231.02 V 230.93 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 1.418 1.490 PASS
Mains Voltage THD: 0.17 % 0.15 % N/A 0.25 % 2.00 % PASS
Real Power: 0.098 W 0.061 W N/A 0.152 W N/A N/A
Apparent Power: 27.968 W 27.787 W N/A 28.163 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 0.232W 68.049% 0.039
5.157V 0.341W 114.91V
2 0.09A 0.464W 75.023% 0.07
5.156V 0.619W 114.92V
3 0.55A 2.831W 81.969% 0.289
5.146V 3.454W 114.92V
4 1A 5.138W 82.029% 0.364
5.137V 6.264W 114.91V
5 1.5A 7.693W 81.932% 0.418
5.128V 9.389W 114.92V
6 3A 15.296W 80.536% 0.485
5.099V 18.993W 114.91V
Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.232W 58.938% 0.013
5.157V 0.394W 229.89V
2 0.09A 0.464W 68.617% 0.023
5.156V 0.677W 229.89V
3 0.55A 2.831W 80.755% 0.113
5.147V 3.506W 229.89V
4 1A 5.138W 81.501% 0.186
5.138V 6.304W 229.88V
5 1.5A 7.693W 81.931% 0.222
5.128V 9.389W 229.89V
6 3A 15.297W 81.52% 0.332
5.099V 18.765W 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% 4.430A 1.95A 1.976A 0.973A 75.006 87.428% 593 17.4 40.27°C 0.978
12.057V 5.128V 3.341V 5.14V 85.791 42.71°C 114.88V
20% 9.879A 2.926A 2.965A 1.169A 149.95 90.515% 595 17.5 40.77°C 0.986
12.050V 5.126V 3.339V 5.131V 165.665 44.61°C 114.86V
30% 15.683A 3.415A 3.461A 1.367A 224.957 91.575% 599 14.5 41.19°C 0.979
12.044V 5.124V 3.337V 5.123V 245.656 46.43°C 114.83V
40% 21.501A 3.905A 3.957A 1.565A 300.05 91.836% 639 9.4 41.89°C 0.983
12.039V 5.123V 3.336V 5.114V 326.727 48.32°C 114.81V
50% 26.926A 4.883A 4.95A 1.763A 374.494 91.64% 701 12.8 42.09°C 0.986
12.033V 5.12V 3.334V 5.105V 408.658 50.29°C 114.78V
60% 32.395A 5.863A 5.943A 1.963A 449.4 91.264% 792 17.1 42.78°C 0.989
12.026V 5.118V 3.332V 5.096V 492.42 52.57°C 114.75V
70% 37.870A 6.843A 6.938A 2.162A 524.316 90.8% 1063 26.8 43.21°C 0.991
12.020V 5.115V 3.33V 5.087V 577.443 51.06°C 114.73V
80% 43.421A 7.822A 7.934A 2.264A 599.506 90.213% 1375 34.3 43.68°C 0.993
12.013V 5.113V 3.328V 5.079V 664.545 51.45°C 114.69V
90% 49.314A 8.314A 8.419A 2.366A 674.551 89.579% 1619 38.9 44.14°C 0.994
12.006V 5.111V 3.326V 5.072V 753.027 50.97°C 114.67V
100% 55.009A 8.806A 8.935A 2.967A 749.774 88.85% 1785 42 45.21°C 0.995
11.999V 5.109V 3.324V 5.055V 843.873 51.28°C 114.65V
110% 60.580A 9.79A 10.024A 2.971A 824.785 88.106% 1787 42.1 45.67°C 0.996
11.992V 5.107V 3.322V 5.05V 936.142 53.4°C 114.61V
CL1 0.116A 14.137A 14.348A 0A 121.293 85.118% 733 15.2 41.17°C 0.987
12.054V 5.106V 3.325V 5.15V 142.502 49.43°C 114.88V
CL2 0.115A 19.583A 0A 0A 101.366 84.123% 681 11.6 40.8°C 0.983
12.058V 5.105V 3.337V 5.156V 120.498 48.12°C 114.89V
CL3 0.115A 0A 19.837A 0A 67.399 79.353% 650 10.2 40.44°C 0.978
12.059V 5.117V 3.328V 5.155V 84.936 47°C 114.89V
CL4 62.436A 0A 0A 0A 749.573 89.551% 1791 42.2 45.02°C 0.995
12.005V 5.121V 3.338V 5.122V 837.036 52.33°C 114.66V

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% 4.429A 1.95A 1.976A 0.973A 75.009 88.882% 593 17.4 40.02°C 0.881
12.058V 5.127V 3.341V 5.14V 84.391 41.3°C 229.88V
20% 9.879A 2.927A 2.966A 1.17A 149.961 92.256% 596 17.5 40.53°C 0.949
12.052V 5.125V 3.339V 5.131V 162.55 42.55°C 229.87V
30% 15.684A 3.416A 3.461A 1.367A 224.97 93.132% 604 11.4 41.37°C 0.961
12.045V 5.123V 3.337V 5.122V 241.558 43.48°C 229.86V
40% 21.501A 3.905A 3.958A 1.565A 300.068 93.528% 650 10.2 41.96°C 0.97
12.039V 5.122V 3.336V 5.113V 320.831 44.03°C 229.84V
50% 26.929A 4.884A 4.95A 1.764A 374.544 93.505% 710 13.4 42.31°C 0.974
12.033V 5.12V 3.334V 5.104V 400.562 45.4°C 229.83V
60% 32.398A 5.864A 5.944A 1.963A 449.437 93.366% 775 16.6 42.75°C 0.978
12.026V 5.117V 3.332V 5.095V 481.373 46.25°C 229.82V
70% 37.876A 6.845A 6.94A 2.163A 524.376 93.135% 1041 26.3 43.21°C 0.98
12.020V 5.114V 3.33V 5.086V 563.013 46.64°C 229.8V
80% 43.425A 7.824A 7.935A 2.265A 599.558 92.813% 1331 33.4 43.83°C 0.982
12.013V 5.112V 3.327V 5.078V 645.989 46.87°C 229.79V
90% 49.320A 8.316A 8.42A 2.367A 674.624 92.413% 1701 40.1 44.97°C 0.984
12.005V 5.11V 3.326V 5.071V 730.039 48.7°C 229.78V
100% 55.015A 8.808A 8.936A 2.968A 749.818 92.043% 1787 42.1 45.58°C 0.986
11.999V 5.108V 3.324V 5.054V 814.635 48.62°C 229.76V
110% 60.586A 9.792A 10.026A 2.972A 824.837 91.626% 1790 42.2 46.18°C 0.987
11.992V 5.106V 3.322V 5.048V 900.216 51.28°C 229.75V
CL1 0.116A 14.14A 14.349A 0A 121.299 86.748% 756 17 42.98°C 0.939
12.054V 5.105V 3.325V 5.149V 139.827 48.68°C 229.87V
CL2 0.116A 19.588A 0A 0A 101.375 85.697% 707 13.2 43.12°C 0.925
12.059V 5.104V 3.336V 5.155V 118.297 47.58°C 229.88V
CL3 0.115A 0A 19.837A 0A 67.404 80.657% 674 11.4 42.25°C 0.881
12.059V 5.116V 3.327V 5.154V 83.563 46.77°C 229.88V
CL4 62.447A 0A 0A 0A 749.645 92.625% 1743 40.9 44.68°C 0.986
12.004V 5.121V 3.337V 5.12V 809.336 46.72°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 1.232A 0.487A 0.494A 0.194A 20.007 73.936% 586 8.8 36.01°C 0.912
12.053V 5.132V 3.343V 5.16V 27.055 39.9°C 114.91V
40W 2.711A 0.682A 0.691A 0.291A 40.005 83.438% 589 12.2 37.85°C 0.96
12.061V 5.132V 3.343V 5.156V 47.945 40.26°C 114.89V
60W 4.190A 0.877A 0.888A 0.388A 60.004 86.526% 590 13.9 38.16°C 0.972
12.059V 5.131V 3.343V 5.153V 69.347 40.48°C 114.89V
80W 5.667A 1.072A 1.086A 0.485A 79.956 88.3% 591 15 39.29°C 0.978
12.057V 5.13V 3.342V 5.15V 90.55 42.19°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 1.232A 0.487A 0.494A 0.194A 20.003 75.414% 0 <6.0 41.15°C 0.561
12.052V 5.133V 3.343V 5.158V 26.522 36.02°C 229.89V
40W 2.710A 0.682A 0.691A 0.291A 40.003 84.832% 0 <6.0 42.79°C 0.751
12.062V 5.132V 3.343V 5.156V 47.156 37.89°C 229.89V
60W 4.190A 0.877A 0.888A 0.388A 60.003 88.043% 588 12.2 38.28°C 0.842
12.060V 5.131V 3.343V 5.153V 68.156 39.16°C 229.88V
80W 5.666A 1.072A 1.086A 0.486A 79.957 89.825% 591 15 39.5°C 0.889
12.058V 5.13V 3.342V 5.15V 89.012 40.77°C 229.88V

The results above are not used in the certification process

Ripple Measurements

Test12V5V3.3V5VSBPass/Fail
10% Load19.85mV16.81mV16.32mV17.24mVPass
20% Load21.03mV17.98mV16.88mV19.59mVPass
30% Load23.23mV17.16mV16.78mV18.31mVPass
40% Load23.94mV16.40mV16.47mV17.90mVPass
50% Load25.32mV19.16mV17.75mV19.44mVPass
60% Load24.05mV17.27mV17.03mV18.62mVPass
70% Load25.38mV16.96mV16.78mV18.57mVPass
80% Load25.58mV17.62mV19.23mV21.74mVPass
90% Load26.96mV17.88mV19.44mV20.00mVPass
100% Load39.29mV20.04mV22.37mV21.94mVPass
110% Load40.75mV20.38mV21.35mV21.82mVPass
Crossload129.78mV17.38mV21.08mV18.87mVPass
Crossload222.41mV19.52mV22.61mV18.67mVPass
Crossload322.15mV18.19mV18.98mV19.64mVPass
Crossload439.14mV17.73mV19.07mV19.94mVPass

The results above are not used in the certification process

Test12V5V3.3V5VSBPass/Fail
10% Load17.91mV15.38mV14.53mV15.19mVPass
20% Load20.36mV15.69mV14.78mV16.16mVPass
30% Load21.64mV15.48mV14.94mV16.98mVPass
40% Load23.58mV17.88mV15.04mV16.21mVPass
50% Load23.69mV16.35mV15.45mV16.21mVPass
60% Load22.25mV16.86mV15.70mV16.11mVPass
70% Load22.25mV14.00mV15.09mV13.91mVPass
80% Load25.83mV16.96mV17.60mV17.95mVPass
90% Load21.08mV12.72mV14.47mV13.15mVPass
100% Load37.95mV18.71mV19.11mV17.43mVPass
110% Load40.16mV18.64mV20.20mV17.18mVPass
Crossload129.62mV17.87mV21.35mV15.87mVPass
Crossload219.70mV16.71mV19.85mV13.55mVPass
Crossload321.39mV16.04mV16.22mV13.76mVPass
Crossload437.40mV16.97mV15.47mV15.55mVPass

The results above are not used in the certification process

ASRock Steel Legend SL-750G

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