Customer: Cybenetics LTD
Syrou 6, Latsia, 2231, Nicosia Cyprus
Syrou 6, Latsia, 2231, Nicosia Cyprus
PF850D V2 BRONZE
| 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) | - | 88.616% |
| Efficiency Graphs |  |  |
| Average PF (>1450 Load Combinations) | - | 0.967 |
| 12V Step | 8.00W | |
| 5V/3.3V Step | 2.00W | |
| Standby Power Consumption | - | 0.0947W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | - | 80.846% |
| Conducted Emissions EN 55032 & CISPR 32 (48W) | Passed | |
Conducted Emissions Graphs   | ||
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | - | 36.41dBA |
| Noise Graphs |  |  |
| Efficiency With 10W (≤500W) or 2% (>500W) Load | - |
| Hold Up Time | 19.50ms |
| Power OK | 17.40ms |
| Power OK to DC Loss | 2.10ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 11.792 | 4.941 | 3.270 | 4.882 |
| 10ms | 11.426 | 4.924 | 3.248 | 4.847 |
| 1ms | 11.263 | 4.911 | 3.235 | 4.826 |
| 0.1ms | 11.090 | 4.885 | 3.215 | 4.874 |
| Product Identification Details | |
| Brand | Gamer Storm |
| Model | PF850D V2 BRONZE |
| OEM/ODM | Helly |
| Serial Number | - |
| Product Specifications | |
| Manufacturer | |
| Rated Voltage (Vrms) | 200-240 |
| Rated Current (Arms) | 5 |
| Rated Frequency (Hz) | 50-60 |
| Rated Power (W) | 850 |
| Operating Temperature (Continuous Full Load) (°C) | 0 - 40 |
| Type | ATX12V |
| Cable Design | Fixed cables |
| Warranty | No Info |
| Cybenetics | |
| Dimensions (W x H x D) | 150 x 85 x 140mm |
| Weight | 1.74 kg (3.84 lb) |
| Cooling | 120mm Fluid Dynamic Bearing Fan (HA1225M12F-Z) |
| Semi-Passive Operation | ✗ |
| Cybenetics Testing Information | |
| Lab ID | GA85003188 |
| Date of receipt | Jan 28, 2026 |
| Testing Date | Mar 5, 2026 |
| Report Issued Date | Mar 16, 2026 |
| DUT Notes | During +12V OCP testing, the unit had high ripple (> 200 mV) under both normal and hot conditions. It shut down normally. |
| Engineer Name | Ioannis Kalyviotis |
| Authorized By the Laboratory Technical Manager | Aristeidis Bitziopoulos |
| Signature |  |
| Captive Cables | ||||
| Description | Cable Count | Connector Count (Total) | Gauge | Cable Type |
| ATX connector 20+4 pin (570mm) | 1 | 1 | 18-22AWG | Copper |
| 4+4 pin EPS12V (675mm+150mm) | 1 | 2 | 18AWG | Copper |
| 6+2 pin PCIe (575mm+150mm) | 2 | 4 | 18AWG | Copper |
| 12+4 pin PCIe (625mm) (600W) | 1 | 1 | 16-24AWG | Tinned Copper |
| SATA (450mm+150mm+150mm) / 4-pin Molex (+150mm) | 2 | 6 / 2 | 18AWG | 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) | Helly Technology |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 2x Y caps, 1x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | NTC Thermistor MF72 10D-20 (10Ohm @ 25°C) & Relay |
| Bridge Rectifier | 2x HG GBU 1508 (600V, 15A @ 100°C) |
| APFC MOSFETs | 1x Perfect Intelligent Power Semiconductor PTA28N50F (500V, 18A@ 100°C, Rds(on):0.17Ohm) |
| APFC Boost Diode | WeEn BYC10X-600P (600V, 10A @ 175°C) |
| Bulk Cap(s) | ChengX (420V, 560uF 2000h @ 105°C, LS ) |
| Main Switchers | 2x Perfect Intelligent Power Semiconductor PTA28N50F (500V, 18A@ 100°C, Rds(on):0.17Ohm) |
| PFC / PWM Combo Controller | Champion CM6800UX |
| Topology | Primary Side: APFC, Dual Forward Secondary Side: [12V] Synchronous Rectification & [Minor Rails] DC-DC Converters |
| Secondary Side | |
| +12V MOSFETs | 3x Kwansemi KS62031CAT (60V, 116A @ 100°C, Rds(on): 2.5mOhm) |
| 5V & 3.3V | DC-DC Converters: 2x Kwansemi KS3212NAT (30V, 44A@ 100℃,Rds(on): 3.2mOhm) 2x Kwansemi KS3214NAT (30V, 38A@ 100℃,Rds(on): 5.5mOhm) PWM Controller(s): 2x ANPEC APW7164 |
| Filtering Capacitors | Electrolytic: |
| Supervisor IC | INFSitronix IN1S429I (OVP,UVP,OCP,PG) |
| Fan Power Switch | SS8550 Y2 PNP Transistor |
| Fan Model | Hong Hua HA1225M12F-Z (120mm, 12V, 0.45A, Fluid Dynamic Bearing Fan) |
| 5VSB Circuit | |
| Rectifier | Dongke DK5V60R20S (60V, 20mOhm) |
| Standby PWM Controller | Excelliance MOS EM8569C |
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 | ±0.43% |
| Timings | ±2.64ms |
| Power Excursions (Transient Response) | ±0.18V |
| Conducted EMI Emissions (150 kHz – 30 MHz) | ±2.35 dB |
| Noise Output | ±1.23 dB |