
Focus GX-1000 ATX 3.1
| 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) | 89.433% | 91.569% |
| Efficiency Graphs | ![]() | ![]() |
| Average PF (>1450 Load Combinations) | 0.977 | 0.946 |
| 12V Step | 10.00W | |
| 5V/3.3V Step | 2.50W | |
| Standby Power Consumption | 0.0415W | 0.1131W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 80.317% | 79.461% |
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | 20.94dBA | 21.21dBA |
| Noise Graphs | ![]() | ![]() |
| Efficiency With 10W (≤500W) or 2% (>500W) Load | 67.433% |
| Hold Up Time | 23.20ms |
| Power OK | 19.80ms |
| Power OK to DC Loss | 3.40ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 11.978 | 4.989 | 3.275 | 4.948 |
| 10ms | 11.747 | 4.956 | 3.235 | 4.925 |
| 1ms | 11.650 | 4.940 | 3.216 | 4.911 |
| 0.1ms | 11.553 | 4.927 | 3.199 | 4.896 |
| Product Identification Details | |
| Brand | Seasonic |
| Model | Focus GX-1000 ATX 3.1 |
| OEM | Seasonic |
| Serial Number | A544940004 |
| Product Specifications | |
| Manufacturer | |
| Rated Voltage (Vrms) | 100-240 |
| Rated Current (Arms) | 6.5-13 |
| Rated Frequency (Hz) | 50-60 |
| Rated Power (W) | 1000 |
| 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 140mm |
| Weight | 1.68 kg (3.70 lb) |
| Cooling | 135mm Fluid Dynamic Bearing Fan (HA13525H12SF-Z) |
| Semi-Passive Operation | ✓ (selectable) |
| Cybenetics Testing Information | |
| Lab ID | SS10003022 |
| Date of receipt | Oct 17, 2025 |
| Testing Date | Nov 5, 2025 |
| Report Issued Date | Nov 7, 2025 |
| Engineer Name | Okeke Ugochukwu Onyedikachukwu |
| 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 (610mm) | 1 | 1 | 16-18AWG | Tinned Copper |
| 4+4 pin EPS12V (750mm) | 2 | 2 | 16AWG | Tinned Copper |
| 6+2 pin PCIe (750mm) | 2 | 2 | 16AWG | Tinned Copper |
| 2x 6+2 pin PCIe (700mm) | 2 | 2 | 16-18AWG | Tinned Copper |
| 12+4 pin PCIe (700mm) (600W) | 1 | 1 | 16-28AWG | Tinned Copper |
| SATA (500mm+150mm+150mm+150mm) | 2 | 8 | 18AWG | Tinned Copper |
| 4-pin Molex (450mm+120mm+120mm) | 1 | 3 | 18AWG | Tinned 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) | Seasonic |
| PCB Type | Double-Sided |
| Primary Side | |
| Transient Filter | 4x Y caps, 2x X caps, 2x CM chokes, 1x MOV |
| Inrush Protection | NTC Thermistor MF72 5D-20 (5 Ohm @ 25°C) & Relay |
| Bridge Rectifier | 2x GBU1508 (800V, 15A @ 100°C) |
| APFC MOSFETs | 2x Alpha & Omega AOB125A60L (600V, 18A @ 100°C, Rds(on): 0.125Ohm) |
| APFC Boost Diode | Infineon IDH08G65C5 (650V, 8A @ 145°C) |
| Bulk Cap(s) | Nippon Chemi-Con (420V, 820uF, 2000h @ 105°C, KHE) |
| Main Switchers | 4x Alpha & Omega AOB190A60CL (600V, 12A @ 100°C, Rds(on): 0.19Ohm) |
APFC Controller | Champion CM6500UNX |
| Resonant Controller | Champion CM6901T6X |
| Topology | Primary side: APFC, Full-Bridge & LLC Resonant Converter Secondary side: [12V] Synchronous Rectification & [Minor Rails] DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 6x Nexperia PSMN1R4-40YLD (40V, 240A @ 25°C, Rds(on): 1.4mOhm) |
| 5V & 3.3V | DC-DC Converters: 4x Nexperia PSMN4R0-30YLD (30V, 95A @ 25°C, Rds(on): 4mOhm) PWM Controller(s): ANPEC APW7159C |
| Filtering Capacitors | Electrolytic: |
| Supervisor IC | Weltrend WT7527RA (OVP, UVP, OCP, SCP, PG) |
| Micro Controller | Nuvoton M031FB0AE |
| Fan Model | Hong Hua HA13525H12SF-Z (135mm, 12V, 0.50A, Fluid Dynamic Bearing Fan) |
| 5VSB Circuit | |
| Rectifier | Dongke DK5V45R10S (45V, 10mOhm) |
| Standby PWM Controller | Excelliance MOS EM8569C |
| 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 |