Customer: Cybenetics LTD
Syrou 6, Latsia, 2231, Nicosia Cyprus
Syrou 6, Latsia, 2231, Nicosia Cyprus
RM850x Shift (ATX v3.1)
| 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) | 90.009% | 91.794% |
| Efficiency Graphs |  |  |
| Average PF (>1450 Load Combinations) | 0.992 | 0.966 |
| 12V Step | - | |
| 5V/3.3V Step | - | |
| Standby Power Consumption | 0.0405W | 0.0818W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 85.459% | 84.416% |
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | 10.65dBA | 10.97dBA |
| Noise Graphs |  |  |
| Efficiency With 10W (≤500W) or 2% (>500W) Load | 72.660% |
| Hold Up Time | 24.50ms |
| Power OK | 19.70ms |
| Power OK to DC Loss | 4.80ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 11.918 | 4.975 | 3.288 | 4.982 |
| 10ms | 11.718 | 4.948 | 3.258 | 4.951 |
| 1ms | 11.616 | 4.933 | 3.242 | 4.933 |
| 0.1ms | 11.468 | 4.908 | 3.214 | 4.914 |
| Product Identification Details | |
| Brand | Corsair |
| Model | RM850x Shift (ATX v3.1) |
| OEM | Great Wall |
| Serial Number | A9H1D518401FMC |
| Product Specifications | |
| Manufacturer | |
| Rated Voltage (Vrms) | 100-240 |
| Rated Current (Arms) | 5-10 |
| Rated Frequency (Hz) | 47-63 |
| Rated Power (W) | 850 |
| Operating Temperature (Continuous Full Load) (°C) | |
| Type | ATX12V |
| Cable Design | Fully Modular |
| Warranty | |
| Cybenetics | |
| Dimensions (W x H x D) | |
| Weight | |
| Cooling | 140mm Fluid Dynamic Bearing Fan (NR140HP) |
| Semi-Passive Operation | ✓ (selectable) |
| Cybenetics Testing Information | |
| Lab ID | CR85002879 |
| Date of receipt | Jun 13, 2025 |
| Testing Date | Jul 7, 2025 |
| Report Issued Date | Jul 10, 2025 |
| Engineer Name | - |
| Authorized By the Laboratory Technical Manager | Aristeidis Bitziopoulos |
| Signature |  |
| Modular Cables | ||||
| Description | Cable Count | Connector Count (Total) | Gauge | In Cable Capacitors |
| ATX connector 24 pin (610mm) | 1 | 1 | 16-20AWG | No |
| 4+4 pin ATX12V (650mm) | 2 | 2 | 18AWG | No |
| 6+2 pin PCIe (650mm) | 2 | 2 | 18AWG | No |
| 2x 6+2 pin PCIe (650mm) | 2 | 2 | 18AWG | No |
| 12+2 pin PCIe (650mm) (600W) | 1 | 1 | 16-24AWG | No |
| SATA (500mm+100mm+100mm) | 3 | 9 | 18AWG | No |
| 4-pin Molex (450mm+100mm+100mm+100mm) | 1 | 4 | 18AWG | No |
| Over Voltage Protection | ✓ |
| Under Voltage Protection | ✓ |
| Over Power Protection | ✓ |
| Over Current (+12V) Protection | ✓ |
| Over Temperature Protection | ✓ |
| Short Circuit Protection | ✓ |
| Surge Protection | ✓ |
| General Data | |
| Manufacturer (OEM) | Great Wall |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | NTC Thermistor SCK205R0 (5 Ohm @ 25°C) & Relay |
| Bridge Rectifier(s) | 2x GBU1510 (1000V, 15A @ 40°C) |
| APFC MOSFETs | 2x STMicroelectronics STW33N60DM2 (650V, 15.5A @ 100°C, Rds(on): 130mOhm) |
| APFC Boost Diode | 1x ROHM SCS308AH (650V, 8A @ 135°C) |
| Bulk Cap(s) | |
| Main Switchers | 2x STMicroelectronics STW33N60DM2 (650V, 15.5A @ 100°C, Rds(on): 130mOhm) |
| PFC/LLC Combo Controller | MPS HR1280 |
| Topology | Primary side: Semi-Digital, APFC, Half-Bridge & LLC Resonant Converter Secondary side: [12V] Synchronous Rectification & [Minor Rails] DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 4x Toshiba TPH1R204PL (40V, 150A @ 25°C, Rds(on): 1.24mOhm) |
| 5V & 3.3V | DC-DC Converters: 4x DMT3004LPS (30V, 17A @ 70°C, Rds(on): 3.8mOhm) PWM Controller(s): ANPEC APW7159C |
| Filtering Capacitors | Electrolytic: |
| Supervisor IC | IN1S3151-SAG |
| IC Driver | MPS MP6924B |
| MCU | STMicroelectronics STM32C011F6P3 |
| Fan Model | Corsair NR140HP (140mm, 12V, 0.33A, Fluid Dynamic Bearing Fan) |
| 5VSB Circuit | |
| Rectifier (Low Side) | 1x Diodes Incorporated DMT10H009LPS (100V, 8A @ 70°C, Rds(on): 8mOhm) |
| Standby PWM Controller | Power Integrations TNY288GG |
| 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 |