Toughpower GF3 850W (#2)
| 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) | 89.061% | 91.200% |
| Efficiency Graphs | ![]() | ![]() |
| Average PF (>1450 Load Combinations) | 0.981 | 0.939 |
| 12V Step | 9.00W | |
| 5V/3.3V Step | 2.00W | |
| Standby Power Consumption | 0.0490W | 0.0950W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 76.304% | 76.304% |
| Conducted Emissions EN 55032 & CISPR 32 (48W) | Passed | |
| Conducted Emissions Graphs | ![]() | ![]() |
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | 29.63dBA | 30.35dBA |
| Noise Graphs | ![]() | ![]() |
| Efficiency With 10W (≤500W) or 2% (>500W) Load | 66.116% |
| Hold Up Time | 18.30ms |
| Power OK | 17.10ms |
| Power OK to DC Loss | 1.20ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 12.048 | 5.012 | 3.315 | 4.990 |
| 10ms | 11.582 | 4.985 | 3.278 | 4.906 |
| 1ms | 11.455 | 4.975 | 3.268 | 4.881 |
| 0.1ms | 11.340 | 4.973 | 3.264 | 4.859 |
| Product Identification Details | |
| Brand | Thermaltake |
| Model | Toughpower GF3 850W (#2) |
| OEM/ODM | CWT |
| Serial Number | PSTPD0850FNFAGU4BRVW00438 |
| 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 - 50 |
| Type | ATX12VO |
| Cable Design | Fully Modular |
| Warranty | 10 years |
| Cybenetics | |
| Dimensions (W x H x D) | 150 x 87 x 140mm |
| Weight | 1.48 kg (3.26 lb) |
| Cooling | 135mm Fluid Dynamic Bearing Fan (CWT13525H12F-9) |
| Semi-Passive Operation | ✗ |
| Cybenetics Testing Information | |
| Lab ID | TT85003368 |
| Date of receipt | Jul 3, 2026 |
| Testing Date | Aug 4, 2026 |
| Report Issued Date | Aug 11, 2026 |
| Engineer Name | Efstathios Papadopoulos |
| 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 (550mm) | 1 | 1 | 16AWG | Tinned Copper |
| 4+4 pin EPS12V (700mm) | 2 | 2 | 16AWG | Tinned Copper |
| 6+2 pin PCIe (600mm+150mm) | 2 | 4 | 16AWG | Tinned Copper |
| 12+4 pin PCIe (600mm) (600W) | 2 | 2 | 16-26AWG | Tinned Copper |
| SATA (450mm+150mm+150mm) | 2 | 6 | 18AWG | Tinned Copper |
| SATA (500mm+150mm) / 4-pin Molex (450mm+150mm+150mm+150mm) | 1 | 4 | 18AWG | Tinned Copper |
| AC Power Cord (1350mm) - C13 coupler | 1 | 1 | 14AWG | |
| 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 | 2x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | 1x NTC Thermistor SCK-056 (5 Ohm @ 25°C) & Relay |
| Bridge Rectifier | 1x Yangjie GBU1506 (600V, 15A @ 100°C) |
| APFC MOSFETs | 2x Great Power GP28S50YERD (500V, 17.7A @ 100°C, Rds(on): 0.125Ohm) |
| APFC Boost Diode | 1x CRMicro CRXI06D065G2 (650V, 6A @ 167°C) |
| Bulk Cap(s) | 1x Nippon Chemi-Con (400V, 560uF 2000h @ 105°C, KMR) |
| Main Switchers | 4x Silan SVF20N50F (500V, 12.6A @ 100°C, Rds(on): 0.27Ohm) |
APFC Controller | Champion CM6500UNX & |
| Resonant Controller | Champion CM6901XIS |
| Topology | Primary side: APFC, Full-Bridge & LLC Resonant Converter Secondary side: [12V] Synchronous Rectification & [Minor Rails] DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 6x Infineon BSC014N04LS (40V, 100A @ 100°C, Rds(on): 1.4mOhm) |
| 5V & 3.3V | DC-DC Converters: 4x UBIQ Semi QM3054M6 (30V, 61A @ 100°C, Rds(on): 4.8mOhm) PWM Controller(s): ANPEC APW7159C |
| Filtering Capacitors | Electrolytic: |
| Fan Model | TT-13525 CWT13525H12F-9 (135mm, 12V, 0.4A, Fluid Dynamic Bearing Fan) |
| 5VSB Circuit | |
| Rectifier | PFC Device PFS5V45H |
| 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 dB |
| Noise Output | ±1.23 dB |