Customer: Cybenetics LTD
Syrou 6, Latsia, 2231, Nicosia Cyprus
Syrou 6, Latsia, 2231, Nicosia Cyprus
Core GX-850 ATX3
| 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) | 89.073% | 91.095% |
| Efficiency Graphs |  |  |
| Average PF (>1450 Load Combinations) | 0.977 | 0.943 |
| 12V Step | - | |
| 5V/3.3V Step | - | |
| Standby Power Consumption | 0.0665W | 0.1740W |
| ErP Lot 3/6 Ready | ✓ | |
| (EU) No 617/2013 Compliance | ✓ | |
| Average Efficiency VSB | 79.815% | 78.391% |
| Voltage | 115V | 230V |
|---|---|---|
| Noise Rating (>1450 Load Combinations) | 28.17dBA | 28.19dBA |
| Noise Graphs |  |  |
| Efficiency With 10W (≤500W) or 2% (>500W) Load | 71.934% |
| Hold Up Time | 18.00ms |
| Power OK | 14.70ms |
| Power OK to DC Loss | 3.30ms |
| Test\Rail | +12V | 5V | 3.3V | 5VSB |
| 100ms | 11.746 | 4.992 | 3.282 | 4.971 |
| 10ms | 11.626 | 4.958 | 3.246 | 4.951 |
| 1ms | 11.500 | 4.939 | 3.226 | 4.938 |
| 0.1ms | 11.380 | 4.921 | 3.207 | 4.922 |
| Product Identification Details | |
| Brand | Seasonic |
| Model | Core GX-850 ATX3 |
| OEM/ODM | Seasonic |
| Serial Number | - |
| Product Specifications | |
| Manufacturer | |
| Rated Voltage (Vrms) | 100-240 |
| Rated Current (Arms) | 5.5-11 |
| Rated Frequency (Hz) | 50-60 |
| 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 | 120mm Fluid Dynamic Bearing Fan (HA1225H12F-Z) |
| Semi-Passive Operation | ✗ |
| Cybenetics Testing Information | |
| Lab ID | SS85002750 |
| Date of receipt | Feb 11, 2025 |
| Testing Date | Feb 20, 2025 |
| Report Issued Date | Mar 6, 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 20+4 pin (620mm) | 1 | 1 | 16-18AWG | No |
| 4+4 pin EPS12V (750mm) | 2 | 2 | 16AWG | No |
| 2x 6+2 pin PCIe (710mm) | 1 | 2 | 16-18AWG | No |
| 6+2 pin PCIe (750mm) | 1 | 1 | 16-18AWG | No |
| 12+4 pin PCIe (700mm) (600W) | 1 | 1 | 16-28AWG | No |
| SATA (455mm+155mm+155mm) | 2 | 6 | 18AWG | No |
| 4-pin Molex (455mm+125mm+125mm) | 1 | 3 | 18AWG | No |
| 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 | 1x NTC Thermistor MF72-5D20L (5 Ohm) & Relay |
| Bridge Rectifier(s) | 2x GBU1508S (800V, 15A @ 100°C) |
| APFC MOSFETs | 2x CRMicro CRJS140N65G2F (650V, 15A, @ 100°C, Rds(on): 140mOhm) |
| APFC Boost Diode | 1x Global Power Technology G4S06508DT (650V, 8A, @ 152°C) |
| Bulk Cap(s) | 1x Teapo (400V, 470uF, 2,000h @ 105°C, LG) |
| Main Switchers | 4x Haujing Microelectronics CS13N50AOR (500V, 8.2A, @ 100°C, Rds(on): 0.5Ohm) |
| APFC Controller | Champion CM6500UNX |
| Resonant Controller | Champion CU6901VPA |
| Topology | Primary side: APFC, Full-Bridge & LLC Resonant converter Secondary side: Synchronous Rectification & DC-DC converters |
| Secondary Side | |
| +12V MOSFETs | 4x 33208B |
| 5V & 3.3V | DC-DC Converters: 6x UBIQ QN3106M6N (30V, 57A @ 100°C, Rds(on): 3.8mOhm) PWM Controller(s): UPI-semi uP3861P |
| Filtering Capacitors | Electrolytic: 11x Teapo (2-5,000h @ 105°C, SC), Polymer: 21x |
| Supervisor IC | Weltrend WT7527RA (OVP, UVP, OCP, SCP, PG) |
| Fan Controller | Nuvoton M031FB0AE |
| Fan Model | Hong Hua HA1225H12F-Z (120mm, 12V, 0.58A, Fluid Dynamic Bearing Fan) |
| 5VSB Circuit | |
| Low Side Rectifier | Dongke DK5V45R10S (45V, Rds(on): 10mOhm) |
| Standby PWM Controller | Excelliance MOS EM8569C |
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 | ±0.43% |
| Timings | ±2.64ms |
| Power Excursions (Transient Response) | ±0.18V |
| Conducted EMI Emissions (150 kHz – 30 MHz) | ±2.35 dB |
| Noise Output | ±1.23 dB |