Customer: -
Everdenberg 117,47100 Bayside Parkway Fremont, CA 94538,USA.
Everdenberg 117,47100 Bayside Parkway Fremont, CA 94538,USA.
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, Rohde & Schwarz 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 |
| Standby Power Consumption | 0.0405W | 0.0818W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 85.459% | 84.416% |
| Conducted Emissions EN55032 & CISPR 32 | Passed | |
| 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 | 24.50 |
| Power OK | 19.70 |
| Power OK to DC Loss | 4.80 |
| Model Name | Corsair |
| Lab ID | CR85002879 |
| Serial Number | A9H1D518401FMC |
| Date of receipt | Jun 13, 2025 |
| Testing Date | Jul 7, 2025 |
| Report Issued Date | Jul 10, 2025 |
| DUT Notes | 2879 |
| Engineer Name | |
| Authorized By the Laboratory General 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 |
| Manufacturer (OEM) | Great Wall |
| Max. DC Output | 850W |
| Efficiency (115V) | Cybenetics Platinum (90.080%) |
| Efficiency (230V) | Cybenetics Platinum (92.076%) |
| Noise (115V) | Cybenetics A++ (10.65 dB[A]) |
| Noise (230V) | Cybenetics A++ (10.97 dB[A]) |
| Modular | ✓ (Fully) |
| Intel C6/C7 Power State Support | ✓ |
| Operating Temperature (Continuous Full Load) | 0 - 50°C |
| Over Voltage Protection | ✓ |
| Under Voltage Protection | ✓ |
| Over Power Protection | ✓ |
| Over Current (+12V) Protection | ✓ |
| Over Temperature Protection | ✓ |
| Short Circuit Protection | ✓ |
| Surge Protection | ✓ |
| Inrush Current Protection | ✓ |
| Fan Failure Protection | ✗ |
| No Load Operation | ✓ |
| Cooling | 140mm Fluid Dynamic Bearing Fan (NR140HP) |
| Semi-Passive Operation | ✓ (Selectable) |
| Dimensions (W x H x D) | 150 x 85 x 160mm |
| Weight | 1.60 kg (3.53 lb) |
| Form Factor | ATX12V v3.1, EPS 2.92 |
| ATX 3.1 & PCIe 5.1 ready | ✓ |
| Alternative Low Power Mode (ALPM) compatible | ✓ |
| Warranty | 10 Years |
| 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 |
| Rated Voltage (Vrms) | 100-240 |
| Rated Current (Arms) | 5-10 |
| Rated Frequency (Hz) | 47-63 |
| Rated Power (W) | 850 |
| Type | ATX12V |
| Dimensions (W x H x D) | 150 x 85 x 160mm |
| Cooling | 140mm Fluid Dynamic Bearing Fan (NR140HP) |
| Semi-Passive Operation | ✓ (selectable) |
| Cable Design | Fully Modular |
The Efficiency Measurement’s Uncertainty is ±0.15%
The reported expanded uncertainty (U) was derived as the product of the combined standard uncertainty (u) and the coverage factor k = 2, corresponding to a confidence interval of approximately 95%. Measurement uncertainty was determined in accordance with JCGM Guide 100:2008, "Guide to the Expression of Uncertainty in Measurements". The estimate of the reported uncertainty pertains to values obtained during the measurements and does not account for possible long-term changes.
Efficiency Measurement Uncertainty Budget
| Source of Uncertainty | Standard Uncertainty, u(xi) | Relative Standard Uncertainty, u(xi)/xi |
| Intralab Reproducibility | 0.0310 | 0.00031 |
| Electronic loads Calibration | 0.0500 | 0.00050 |
| Power Analyzer Calibration | 0.0250 | 0.00025 |
| Operator and Test Fixture | 0.0350 | 0.00035 |
| Relative Combined Standard Uncertainty (RSS): | 0.00073 | |
| % Expanded Uncertainty U (k=2, norm): | 0.15 | |
The Noise Measurement’s Uncertainty is ±1.23 dBA
The reported expanded uncertainty (U) was derived as the product of the combined standard uncertainty (u) and the coverage factor k = 2, corresponding to a confidence interval of approximately 95%. Measurement uncertainty was determined in accordance with JCGM Guide 100:2008, "Guide to the Expression of Uncertainty in Measurements". The estimate of the reported uncertainty pertains to values obtained during the measurements and does not account for possible long-term changes.
| Source of Uncertainty |
Standard Uncertainty, u(xi)/xi (dBA) |
| Intralab Reproducibility | 0.031 |
| Mic Calibrator 4231 calibration | 0.200 |
| Microphone frequency response | 0.577 |
| Temperature | 0.12 |
| Position error | 0.058 |
| Relative Combined Standard Uncertainty (RSS): | 0.61 |
| Expanded Uncertainty U (k=2, norm): | 1.23 |
The Conducted EMI Emissions Measurement’s Uncertainty is ±1.75 dB
The reported expanded uncertainty (U) was derived as the product of the combined standard uncertainty (u) and the coverage factor k = 2, corresponding to a confidence interval of approximately 95%. Measurement uncertainty was determined in accordance with JCGM Guide 100:2008, "Guide to the Expression of Uncertainty in Measurements". The estimate of the reported uncertainty pertains to values obtained during the measurements and does not account for possible long-term changes.
| Source of Uncertainty |
Standard Uncertainty, u(xi)/xi (dB) |
| Spectrum Analyzer total measurement uncertainty | 0.250 |
| Spectrum Analyzer calibration | 0.500 |
| Noise and Signal Quality | 0.577 |
| Bandwidth and Resolution Bandwidth (RBW) | 0.289 |
| Measurement time and Averaging | 0.115 |
| Environmental Factors | 0.115 |
| Relative Combined Standard Uncertainty (RSS): | 0.87 |
| Expanded Uncertainty U (k=2, norm): | 1.75 |