CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
Version:00
NZXT C850 Gold Core
Serial Number-
Lab IDNZ85002899
Certification ID252899
  • Test Result Report ID: 25PS2899A
  • Certificate Issue Date: Jul 28, 2025
115V230V
Scheme: ETA-EMI PSU
115V230V
Scheme: LAMBDA PSU
Aristeidis Bitziopoulos, Certification Body General Manager

General Information

DUT Information

BrandNZXT
Manufacturer (OEM)HEC
SeriesC CORE
Model NumberPS-2502
Serial Number-
DUT Notes

DUT Specifications

Rated Voltage (Vrms)100-240
Rated Current (Arms)5-10
Rated Frequency (Hz)50-60
Rated Power (W)850
TypeATX12V
Dimensions (W x H x D)
Cooling135mm Fluid Dynamic Bearing Fan (HA13525H12SF-Z)
Semi-Passive Operation✓ (selectable)
Cable DesignFully Modular

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps202070.830
Watts120850150
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
Oscilloscopes Picoscope 4444, 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
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 24 pin (600mm) 1 1 16-18AWG No
4+4 pin EPS12V (700mm) 1 1 18AWG No
8 pin EPS12V (700mm) 1 1 18AWG No
6+2 pin PCIe (650mm) 3 3 18AWG No
12+4 pin PCIe (650mm) (600W) 1 1 16-24AWG No
SATA (500mm+150mm+150mm+150mm) 2 8 18AWG No
4-pin Molex (500mm+150mm+150mm) 1 3 18AWG No

Parts Description

General Data
Manufacturer (OEM) HEC
PCB Type Double-Sided
Primary Side
Transient Filter 4x Y caps, 3x X caps, 2x CM chokes, 1x MOV, 1x Power Integrations CAP200DG (X Capacitor Discharge IC)
Inrush Protection 1x NTC Thermistor MF72 5D-15 (5 Ohm) & Relay
Bridge Rectifier(s)
2x MCC GBU15K (800V, 15A @ 100°C)
APFC MOSFETs
2x CRMicro CRJF99N65G2 (650V, 20A @ 100°C, Rds(on): 99mOhm)
APFC Boost Diode
1x Sanan SDS065J008C3 (650V, 8A @ 155°C)
Bulk Cap(s)
1x Teapo (400V, 560uF @ 105°C, TD(V))
Main Switchers
2x NCEPower NCE65TF130F (650V, 18A @ 25°C, Rds(on): 109mOhm)
APFC  Controller
1x Champion CM6500UNX &
1x Champion CM03X (reduce the no-load consumption)
Resonant Controller
Champion CM6901T6X
Topology
Primary side: APFC, Half-Bridge & LLC Resonant converter
Secondary side: [12V] Synchronous Rectification & [Minor Rails] DC-DC converters
Secondary Side
+12V MOSFETs 6x Pingwei PWC012N04ES (40V, 132A @ 100°C, Rds(on): 1.2mOhm)
5V & 3.3V DC-DC Converters: 
PWM Controller(s): ANPEC APW7159C
Filtering Capacitors

Electrolytic:
2x Teapo (3,000h @ 105°C, SC)
4x Elite (2-5,000h @ 105°C, ED(M))
1x Elite (@ 105°C, PS(M))
Polymer: 8x Elite, 25x Biostar
Supervisor IC Weltrend WT7527RT (OVP, UVP, OCP, SCP, PG)
MCU Nuvoton M051FB9AE
Fan Model Hong Hua HA13525H12SF-Z (135mm, 12V, 0.50A, Fluid Dynamic Bearing Fan)
5VSB
Rectifier
1x PingWei PS1065L (60V, 10A)
Standby PWM Controller
Excelliance MOS EM8569D

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

Efficiency RatingPLATINUM
Noise RatingA++
Average Efficiency (>1450 load combinations)90.092%
Average Noise Output (>1450 Load Combinations)11.79dBA
Average PF (>1450 Load Combinations)0.985
Efficiency With 10W (≤500W) or 2% (>500W) Load68.228%
Standby Power Consumption0.0620W
12V Ripple (Full Load)30.64mV
5V Ripple (Full Load)17.22mV
3.3V Ripple (Full Load)14.79mV
5VSB Ripple (Full Load)12.10mV
12V Load Regulation1.01%
5V Load Regulation1.26%
3.3V Load Regulation1.72%
5VSB Load Regulation2.17%
Inrush Current36.880A
Efficiency RatingPLATINUM
Noise RatingA++
Average Efficiency (>1450 load combinations)91.944%
Average Noise Output (>1450 Load Combinations)10.38dBA
Average PF (>1450 Load Combinations)0.952
Efficiency With 10W (≤500W) or 2% (>500W) Load68.079%
Standby Power Consumption0.1170W
12V Ripple (Full Load)30.85mV
5V Ripple (Full Load)17.48mV
3.3V Ripple (Full Load)15.28mV
5VSB Ripple (Full Load)12.27mV
12V Load Regulation1.03%
5V Load Regulation1.24%
3.3V Load Regulation1.72%
5VSB Load Regulation2.20%
Inrush Current63.350A
12V Transient Response (200%)11.47V
5V Transient Response (200%)4.906V
3.3V Transient Response (200%)3.196V
5VSB Transient Response (200%)5.003V
Hold-Up Time & Power Ok Signal21.00ms
AC Loss to PWR_OK Hold Up Time18.50ms
PWR_OK Inactive to DC Loss Delay2.50ms
PSU Timings: T1 (20% / 100%)48.0ms51.0ms
PSU Timings: T3 (20% / 100%)125.0ms124.0ms
12V OCP (27.6°C / 43.6°C)89.00A (125.71%), 12.011V88.80A (125.42%), 12.052V
5V OCP (27.6°C / 43.6°C)25A (125.00%), 4.994V24.6A (123.00%), 4.991V
3.3V OCP (27.6°C / 43.6°C)24.4A (122.00%), 3.281V24.2A (121.00%), 3.282V
5VSB OCP (27.6°C / 43.6°C)4.2A (140.00%), 5.059V4.3A (143.33%), 5.058V
OPP (29.19°C / 42.20°C)123.87%123.87%

Hold-Up Time & Power Ok Signal

Hold-Up Time (ms)21
AC Loss to PWR_OK Hold Up Time (ms)18.5
PWR_OK Inactive to DC Loss Delay (ms)2.5

Vampire Power

Tables

Detailed Results
Average Min Limit Min Max Limit Max Result
Mains Voltage RMS: 115.08 V 115.05 V 113.85 V 115.13 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 0.17 % 2.00 % PASS
Real Power: 0.062 W 0.039 W N/A 0.086 W N/A N/A
Apparent Power: 11.784 W 11.288 W N/A 12.300 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: 231.06 V 230.95 V 227.70 V 231.12 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 % 0.14 % N/A 0.28 % 2.00 % PASS
Real Power: 0.117 W 0.072 W N/A 0.176 W N/A N/A
Apparent Power: 38.545 W 37.830 W N/A 39.365 W N/A N/A
Power Factor: 0.003 N/A N/A N/A N/A N/A

Graphs

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

Conducted Emissions EN55032 & CISPR 32

NEUTRAL
PHASE

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 66.292% 0.032
5.123V 0.348W 114.95V
2 0.09A 0.461W 74.066% 0.057
5.121V 0.622W 114.94V
3 0.55A 2.814W 81.653% 0.249
5.114V 3.446W 114.92V
4 1A 5.108W 81.727% 0.346
5.106V 6.25W 114.93V
5 1.5A 7.651W 81.786% 0.396
5.099V 9.354W 114.93V
6 3A 15.238W 81.162% 0.447
5.078V 18.776W 114.94V
Test # 5VSB DC/AC (Watts) Efficiency PF/AC Volts
1 0.045A 0.231W 56.564% 0.011
5.121V 0.409W 230.06V
2 0.09A 0.461W 66.734% 0.019
5.12V 0.691W 230.05V
3 0.55A 2.812W 79.674% 0.094
5.112V 3.531W 230.06V
4 1A 5.106W 80.917% 0.157
5.105V 6.311W 230.05V
5 1.5A 7.647W 81.602% 0.214
5.097V 9.37W 230.05V
6 3A 15.232W 81.427% 0.315
5.077V 18.707W 230.05V

Protection Features

OCP (Normal @ 27.6°C)12V: 89.00A (125.71%), 12.011V
5V: 25A (125.00%), 4.994V
3.3V: 24.4A (122.00%), 3.281V
5VSB: 4.2A (140.00%), 5.059V
OCP (Hot @ 43.6°C)12V: 88.80A (125.42%), 12.052V
5V: 24.6A (123.00%), 4.991V
3.3V: 24.2A (121.00%), 3.282V
5VSB: 4.3A (143.33%), 5.058V
OPP (Normal @ 29.2°C)1052.92W (123.87%)
OPP (Hot @ 42.2°C)1052.94W (123.87%)
OTP✓ (95°C @ Heat Sink)
SCP12V to Earth: ✓
5V to Earth: ✓
3.3V to Earth: ✓
5VSB to Earth: ✓
PWR_OKProper Operation
UVP (Full Load @ 90V)✓
UVP (No Damage @ 80V)✓
Conducted Emissions EN55032 & CISPR 32✓
NLO✓
Fan Failure Protection✗
SIPSurge: MOV
Inrush: NTC & Bypass Relay

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% 5.240A 1.978A 1.997A 0.98A 85.005 88.145% 0 <6.0 47.65°C 0.971
12.101V 5.058V 3.305V 5.103V 96.437 40.02°C 114.93V
20% 11.505A 2.97A 3.001A 1.178A 169.971 91.258% 0 <6.0 49.63°C 0.983
12.088V 5.052V 3.299V 5.093V 186.254 40.84°C 114.9V
30% 18.128A 3.469A 3.506A 1.377A 254.984 92.028% 0 <6.0 51.33°C 0.979
12.076V 5.047V 3.294V 5.084V 277.069 41.06°C 114.87V
40% 24.773A 3.968A 4.014A 1.577A 340.078 92.083% 308 <6.0 41.83°C 0.982
12.064V 5.041V 3.289V 5.075V 369.32 57.37°C 114.85V
50% 31.081A 4.967A 5.026A 1.777A 425.086 91.858% 454 <6.0 42.04°C 0.985
12.052V 5.034V 3.283V 5.065V 462.768 56.73°C 114.83V
60% 37.363A 5.969A 6.043A 1.979A 509.623 91.416% 515 <6.0 42.67°C 0.988
12.039V 5.028V 3.277V 5.055V 557.478 58.39°C 114.81V
70% 43.727A 6.973A 7.063A 2.181A 594.96 90.898% 764 15 43.18°C 0.99
12.025V 5.021V 3.271V 5.045V 654.539 57.13°C 114.78V
80% 50.105A 7.978A 8.086A 2.284A 679.791 90.285% 1000 23.8 43.84°C 0.992
12.013V 5.014V 3.265V 5.036V 752.937 57.02°C 114.76V
90% 56.898A 8.487A 8.59A 2.387A 765.23 89.602% 1243 31 45°C 0.994
11.999V 5.008V 3.259V 5.028V 854.034 57.31°C 114.75V
100% 63.435A 8.996A 9.127A 2.993A 850.035 88.757% 1465 35.7 45.5°C 0.995
11.986V 5.003V 3.254V 5.012V 957.713 58.04°C 114.73V
110% 69.861A 10.008A 10.251A 2.998A 934.64 87.741% 1902 43 46.47°C 0.996
11.972V 4.996V 3.248V 5.004V 1065.226 58.58°C 114.71V
CL1 0.116A 14.368A 14.52A 0A 121.303 85.034% 862 19.2 40.27°C 0.977
12.085V 5.025V 3.285V 5.101V 142.652 45.8°C 114.91V
CL2 0.116A 19.908A 0A 0A 101.398 83.845% 1118 27.3 40.34°C 0.972
12.093V 5.023V 3.301V 5.11V 120.933 44.5°C 114.92V
CL3 0.115A 0A 20.081A 0A 67.391 77.645% 570 <6.0 40.06°C 0.962
12.094V 5.055V 3.286V 5.108V 86.794 44.48°C 114.93V
CL4 70.854A 0A 0A 0A 849.743 89.566% 1246 31.1 45.85°C 0.995
11.994V 5.029V 3.27V 5.068V 948.738 58.68°C 114.71V

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% 5.240A 1.977A 1.997A 0.98A 85.005 88.622% 0 <6.0 45.58°C 0.845
12.100V 5.059V 3.305V 5.102V 95.918 40.09°C 230.04V
20% 11.505A 2.97A 3.001A 1.178A 169.972 92.269% 0 <6.0 45.97°C 0.923
12.088V 5.053V 3.299V 5.093V 184.214 40.64°C 230.04V
30% 18.130A 3.468A 3.506A 1.377A 254.986 93.343% 0 <6.0 46.54°C 0.947
12.075V 5.048V 3.294V 5.084V 273.173 41.49°C 230.03V
40% 24.775A 3.968A 4.014A 1.577A 340.083 93.671% 304 <6.0 41.56°C 0.961
12.063V 5.042V 3.289V 5.074V 363.061 50.14°C 230.02V
50% 31.087A 4.967A 5.027A 1.778A 425.111 93.624% 450 <6.0 42.03°C 0.967
12.050V 5.035V 3.283V 5.064V 454.058 49.9°C 230.01V
60% 37.370A 5.968A 6.043A 1.979A 509.641 93.394% 512 <6.0 42.71°C 0.972
12.037V 5.029V 3.277V 5.054V 545.693 50.95°C 230V
70% 43.733A 6.972A 7.064A 2.181A 594.968 93.116% 758 14.6 43.22°C 0.975
12.024V 5.022V 3.271V 5.043V 638.95 49.68°C 229.98V
80% 50.113A 7.976A 8.087A 2.285A 679.803 92.701% 997 23.8 43.84°C 0.977
12.011V 5.015V 3.264V 5.035V 733.332 50.02°C 229.97V
90% 56.905A 8.484A 8.591A 2.388A 765.24 92.282% 1241 30.9 44.24°C 0.98
11.997V 5.01V 3.259V 5.026V 829.244 49.57°C 229.96V
100% 63.444A 8.994A 9.128A 2.994A 850.032 91.784% 1465 35.7 45.45°C 0.982
11.984V 5.004V 3.253V 5.01V 926.127 50.31°C 229.95V
110% 69.870A 10.006A 10.254A 2.999A 934.638 91.219% 1744 40.7 46.3°C 0.983
11.970V 4.997V 3.247V 5.003V 1024.613 50.74°C 229.94V
CL1 0.116A 14.363A 14.521A 0A 121.305 85.708% 1120 27.4 41.33°C 0.896
12.084V 5.027V 3.285V 5.101V 141.533 44.7°C 230.04V
CL2 0.116A 19.901A 0A 0A 101.401 84.54% 1116 27.3 40.83°C 0.876
12.092V 5.025V 3.3V 5.11V 119.945 42.62°C 230.05V
CL3 0.116A 0A 20.081A 0A 67.392 78.344% 568 <6.0 40.64°C 0.826
12.093V 5.055V 3.286V 5.107V 86.023 43.81°C 230.05V
CL4 70.856A 0A 0A 0A 849.739 92.469% 1374 34.1 45.28°C 0.982
11.993V 5.028V 3.269V 5.067V 918.95 50.12°C 229.95V

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 1.228A 0.494A 0.498A 0.195A 20.006 71.167% 0 <6.0 43.91°C 0.887
12.101V 5.066V 3.31V 5.121V 28.111 36.21°C 114.95V
40W 2.700A 0.691A 0.698A 0.293A 40.003 81.554% 0 <6.0 45.74°C 0.934
12.108V 5.065V 3.309V 5.118V 49.052 37.96°C 114.94V
60W 4.174A 0.889A 0.898A 0.391A 60.002 85.175% 0 <6.0 46.39°C 0.96
12.105V 5.063V 3.308V 5.115V 70.443 38.47°C 114.93V
80W 5.646A 1.087A 1.098A 0.489A 79.966 87.974% 0 <6.0 47.37°C 0.965
12.102V 5.061V 3.307V 5.112V 90.897 39.81°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
20W 1.228A 0.494A 0.499A 0.195A 20.006 70.241% 0 <6.0 43.06°C 0.523
12.101V 5.066V 3.309V 5.12V 28.483 36.64°C 230.05V
40W 2.700A 0.691A 0.698A 0.293A 40.004 82.048% 0 <6.0 44.52°C 0.689
12.108V 5.065V 3.309V 5.117V 48.756 37.48°C 230.04V
60W 4.174A 0.889A 0.898A 0.391A 60.002 86.193% 0 <6.0 45.9°C 0.779
12.104V 5.063V 3.307V 5.114V 69.612 38.69°C 230.04V
80W 5.646A 1.087A 1.098A 0.489A 79.969 88.56% 0 <6.0 45.92°C 0.835
12.102V 5.061V 3.306V 5.111V 90.3 39.43°C 230.04V

The results above are not used in the certification process

Ripple Measurements

Test12V5V3.3V5VSBPass/Fail
10% Load11.55mV10.30mV6.10mV8.35mVPass
20% Load13.13mV9.44mV5.04mV8.10mVPass
30% Load15.67mV9.85mV4.88mV7.95mVPass
40% Load15.28mV10.46mV5.49mV9.07mVPass
50% Load16.99mV10.31mV5.44mV8.97mVPass
60% Load17.50mV10.97mV5.59mV9.02mVPass
70% Load18.62mV10.05mV6.10mV8.97mVPass
80% Load20.20mV11.99mV10.53mV10.60mVPass
90% Load20.76mV11.48mV11.14mV9.88mVPass
100% Load30.64mV17.22mV14.79mV12.10mVPass
110% Load32.77mV17.25mV16.26mV13.06mVPass
Crossload119.57mV12.12mV12.05mV8.57mVPass
Crossload212.87mV11.83mV5.60mV8.91mVPass
Crossload312.98mV9.49mV13.53mV7.95mVPass
Crossload430.12mV11.53mV7.01mV11.15mVPass

The results above are not used in the certification process

Test12V5V3.3V5VSBPass/Fail
10% Load12.82mV11.43mV6.10mV8.87mVPass
20% Load14.62mV9.59mV5.09mV7.85mVPass
30% Load16.30mV9.38mV5.24mV7.95mVPass
40% Load15.63mV10.00mV5.29mV8.46mVPass
50% Load16.74mV10.56mV5.14mV8.81mVPass
60% Load17.45mV10.71mV6.16mV9.78mVPass
70% Load18.17mV11.32mV6.00mV9.68mVPass
80% Load19.74mV10.86mV10.17mV9.53mVPass
90% Load20.00mV11.37mV10.63mV9.58mVPass
100% Load30.85mV17.48mV15.28mV12.27mVPass
110% Load32.75mV17.56mV15.98mV12.82mVPass
Crossload121.12mV11.58mV11.76mV8.50mVPass
Crossload212.47mV11.94mV5.65mV8.15mVPass
Crossload314.04mV9.38mV13.38mV8.05mVPass
Crossload430.88mV10.96mV6.22mV10.22mVPass

The results above are not used in the certification process

NZXT C850 Gold Core

Top side
Power specifications label
Fan
PSU Internals
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