Customer: Cybenetics LTD
Syrou 6, Latsia, 2231, Nicosia Cyprus
Syrou 6, Latsia, 2231, Nicosia Cyprus
PRIME 850G
| Electronic Loads | Chroma 63601-5 x2 Chroma 63600-2 Chroma 63640-80-80 x10 Chroma 63610-80-20 |
| AC Sources | Chroma 6530, APM SP300VAC4000W-P, GW Instek ASR-3500 |
| Power Analyzers | Rohde & Schwarz HMC8015 & NPA701 |
| 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 |
| EMI Analyzer | TekBox TBMR-110M-EU |
| Isolation Transformer | 4kVA |
| UPS | FSP Champ Tower 3kVA, CyberPower OLS3000E 3kVA |
| Testing Methodology | Cybenetics PSU Test Protocol |
| Voltage | 115V | 230V |
|---|---|---|
| Efficiency (>1450 Load Combinations) | 88.879% | 90.733% |
| Efficiency Graphs |  |  |
| Average PF (>1450 Load Combinations) | 0.979 | 0.936 |
| 12V Step | 9.00W | |
| 5V/3.3V Step | 2.00W | |
| Standby Power Consumption | 0.0356W | 0.0980W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 78.187% | 77.734% |
| Conducted Emissions EN55032 & CISPR 32 (48W) | Passed | |
| Conducted Emissions Graphs |  |  |
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | 39.27dBA | 39.06dBA |
| Noise Graphs |  |  |
| Efficiency With 10W (≤500W) or 2% (>500W) Load | 67.307% |
| Hold Up Time | 20.20ms |
| Power OK | 18.90ms |
| Power OK to DC Loss | 1.30ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 11.882 | 5.035 | 3.193 | 4.996 |
| 10ms | 11.614 | 5.009 | 3.161 | 4.962 |
| 1ms | 11.499 | 4.991 | 3.140 | 4.950 |
| 0.1ms | 11.435 | 4.994 | 3.144 | 4.935 |
| Product Identification Details | |
| Brand | Asus |
| Model | PRIME 850G |
| OEM | CWT (GPX) |
| Serial Number | - |
| Product Specifications | |
| Manufacturer | |
| Rated Voltage (Vrms) | 100-240 |
| Rated Current (Arms) | 12 |
| Rated Frequency (Hz) | 47-63 |
| Rated Power (W) | 850 |
| Operating Temperature (Continuous Full Load) (°C) | 0 - 40 |
| Type | ATX12V |
| Cable Design | Fully Modular |
| Warranty | 8 Years |
| Cybenetics | |
| Dimensions (W x H x D) | 150 x 85 x 150mm |
| Weight | 1.50 kg (3.31 lb) |
| Cooling | 135mm Dual Ball Bearing Fan (ZFB132512H) |
| Semi-Passive Operation | ✗ |
| Cybenetics Testing Information | |
| Lab ID | AS85003116 |
| Date of receipt | Jan 8, 2026 |
| Testing Date | Feb 24, 2026 |
| Report Issued Date | Feb 27, 2026 |
| DUT Notes | Some protection features need adjustment. |
| Engineer Name | Ioannis Kalyviotis |
| Authorized By the Laboratory Technical Manager | Aristeidis Bitziopoulos |
| Signature |  |
| Modular Cables | ||||
| Description | Cable Count | Connector Count (Total) | Gauge | Cable Type |
| ATX connector 20+4 pin (600mm) | 1 | 1 | 18-20AWG | Tinned Copper |
| 4+4 pin EPS12V (650mm+150mm) | 1 | 2 | 18AWG | Tinned Copper |
| 6+2 pin PCIe (600mm) | 1 | 1 | 18AWG | Tinned Copper |
| 6+2 pin PCIe (600mm+150mm) | 1 | 2 | 18AWG | Tinned Copper |
| 12+4 pin PCIe (700mm) (600W) | 1 | 1 | 16-24AWG | Tinned Copper |
| SATA (400mm+120mm+120mm) | 1 | 3 | 18AWG | Tinned Copper |
| SATA (400mm+120mm) | 1 | 2 | 18AWG | Tinned Copper |
| 4-pin Molex (400mm+150mm+150mm+150mm) | 1 | 4 | 18AWG | Tinned Copper |
| Over Power Protection | ✓ |
| Over Current (+12V) Protection | ✓ |
| Over Temperature Protection | ✗ |
| Short Circuit Protection | ✓ |
| Surge Protection | ✓ |
| Inrush Current Protection | ✓ |
| Fan Failure Protection | ✗ |
| General Data | |
| Manufacturer (OEM) | CWT |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 1x NTC Thermistor SCK-056 (5 Ohm @ 20°C) & Relay |
| Bridge Rectifier | 1x NIUSABOU GBU1506 (1000V, 15A @ 100°C) |
| APFC MOSFETs | 1x CRMicro CRJF99N65G2BF (650V, 20A @ 100°C, Rds(on): 90mOhm) |
| APFC Boost Diode | 1x CRMicro CRXI06D065G2 (650V, 6A @ 167°C) |
| Bulk Cap(s) | 1x Elite (420V, 560uF, 2,000h @ 105°C, PL) |
| Main Switchers | 4x Huajing Discrete Devices CS20N60F (600V, 14A @ 100°C, Rds(on): 0.36Ohm) |
| APFC Controller | Champion CM6500UNX |
| Resonant Controller | Champion CM6901X |
| Topology | Primary Side: APFC, Full-Bridge & LLC converter Secondary Side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 6x CMR013N045NS |
| 5V & 3.3V | DC-DC Converters: 4x UBIQ Semiconductor Corp. QN3107M6N (30V, 74A @ 100°C, Rds(on): 2.6mOhm) PWM Controller(s): ANPEC APW7159C |
| Filtering Capacitors | Electrolytic: |
| Supervisor IC | IN1S429I-DCG |
| FanPower Switch | Unisonic Technologies Co. 2SA928A Transistor |
| Fan Model | ZIC ZFB132512H (135mm, 12V, 0.45A, Double Ball Bearing Fan) |
| 5VSB Circuit | |
| Rectifier | Semi Power ES3GBF (280V, 3A @100°C) |
| Standby PWM Controller | Power Integrations TNY287PG |
| Photos |  |  |
| Top side | Power specifications label |
F.1 General Statement
Measurement uncertainty associated with the reported results was evaluated and estimated in accordance with JCGM 100:2008 (Guide to the Expression of Uncertainty in Measurement — GUM) and ISO/IEC 17025:2017, Clauses 7.6 and 7.2.
The uncertainty budget accounts for all significant identified contributors arising from the measurement process, instrumentation, test conditions, and operator interaction.
The reported expanded uncertainty U is obtained by multiplying the combined standard uncertainty uc by a coverage factor k = 2, corresponding to a confidence level of approximately 95 %, assuming a normal probability distribution.
Unless otherwise stated, the reported uncertainty applies only to the specific measurements performed and does not include long-term drift, aging effects, or future environmental changes.
F.2 Expanded Measurement Uncertainty by Measurement Type
| Measurement | Expanded Uncertainty U (k=2, norm) |
| Efficiency | ±0.18% |
| Timings | ±0.48ms |
| Power Excursions (Transient Response) | ±0.1V |
| Conducted EMI Emissions (150 kHz – 30 MHz) | ±2.35 dBμV |
| Noise Output | ±1.23 dB |