
MPG A1250GS PCIE5
| 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) | 89.065% | 91.034% |
| Efficiency Graphs | ![]() | ![]() |
| Average PF (>1450 Load Combinations) | 0.990 | 0.978 |
| 12V Step | - | |
| 5V/3.3V Step | - | |
| Standby Power Consumption | 0.0149W | 0.0787W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 82.210% | 81.228% |
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | 20.88dBA | 20.83dBA |
| Noise Graphs | ![]() | ![]() |
| Efficiency With 10W (≤500W) or 2% (>500W) Load | 76.547% |
| Hold Up Time | 26.80ms |
| Power OK | 22.80ms |
| Power OK to DC Loss | 4.00ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 11.847 | 4.991 | 3.316 | 4.956 |
| 10ms | 11.391 | 4.935 | 3.260 | 4.912 |
| 1ms | 11.221 | 4.908 | 3.237 | 4.892 |
| 0.1ms | 11.077 | 4.884 | 3.214 | 4.873 |
| Product Identification Details | |
| Brand | MSI |
| Model | MPG A1250GS PCIE5 |
| OEM | CWT |
| Serial Number | - |
| Product Specifications | |
| Manufacturer | |
| Rated Voltage (Vrms) | 100-240 |
| Rated Current (Arms) | 15 |
| Rated Frequency (Hz) | 50-60 |
| Rated Power (W) | 1250 |
| Operating Temperature (Continuous Full Load) (°C) | 0 - 50 |
| Type | ATX12V |
| Cable Design | Fully Modular |
| Warranty | 10 Years |
| Cybenetics | |
| Dimensions (W x H x D) | 150 x 85 x 150mm |
| Weight | 1.76 kg (3.88 lb) |
| Cooling | 135mm Fluid Dynamic Bearing Fan (ZFF132512H) |
| Semi-Passive Operation | ✓ (selectable) |
| Cybenetics Testing Information | |
| Lab ID | MS12503023 |
| Date of receipt | Oct 23, 2025 |
| Testing Date | Nov 5, 2025 |
| Report Issued Date | Nov 5, 2025 |
| Engineer Name | Georgios Theodoros Sarimpalas |
| Authorized By the Laboratory Technical Manager | Aristeidis Bitziopoulos |
| Signature | ![]() |
| Modular Cables | ||||
| Description | Cable Count | Connector Count (Total) | Gauge | Cable Type |
| ATX connector 24 pin (600mm) | 1 | 1 | 16-20AWG | Tinned Copper |
| 4+4 pin EPS12V (750mm) | 2 | 2 | 18AWG | Tinned Copper |
| 6+2 pin PCIe (600mm) | 1 | 1 | 16AWG | Tinned Copper |
| 12+4 pin PCIe (600mm) (600W) | 2 | 2 | 16-24AWG | Tinned Copper |
| SATA (500mm+150mm+150mm+150mm) | 2 | 8 | 18AWG | Tinned Copper |
| 4-pin Molex (500mm+150mm+150mm+150mm) | 1 | 4 | 18AWG | Tinned Copper |
| AC Power Cord (1390mm) - C13 coupler | 1 | 1 | 18AWG | - |
| Over Voltage Protection | ✓ |
| Under Voltage Protection | ✓ |
| Over Power Protection | ✓ |
| Over Current (+12V) Protection | ✓ |
| Over Temperature Protection | ✓ |
| Short Circuit Protection | ✓ |
| Surge Protection | ✓ |
| 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 |