





NZXT PS-8G1BB-UK C850 SFX GOLD – 850W SFX ATX 3.1 Fully Modular Power Supply
The NZXT C850 SFX GOLD is a compact and efficient 850W SFX power supply designed for high-performance small form factor SFF systems. Featuring ATX 3.1 compliance and a 600W 12V-2x6 connector, it provides reliable power delivery for modern graphics cards. Its Fully Modular design simplifies cable management in compact cases, while 80 PLUS Gold efficiency, Cybenetics Platinum efficiency certification, and a Cybenetics A- noise rating provide an excellent balance of performance, efficiency, and quiet operation.
Key Features:
• 850W power output for high-performance gaming and workstation systems.
• Compact SFX 3.1 form factor optimized for small form factor builds.
• ATX 3.1 compliant for compatibility with modern PC hardware.
• 600W 12V-2x6 connector for reliable power delivery to modern graphics cards.
• 80 PLUS Gold efficiency with Cybenetics Platinum efficiency certification.
• Cybenetics A- noise rating for quieter system operation.
• Fully Modular cabling allows only the required cables to be connected.
• 92mm PWM FDB fan with Zero RPM Mode for quiet cooling at low loads.
• All 105°C-rated Japanese capacitors for enhanced durability and long-term reliability.
• Low ripple noise, tight voltage regulation, and long hold-up time for stable power delivery.
• Embossed cables with cable combs for cleaner cable management in compact builds.
• Comprehensive protection including OVP, UVP, SCP, OTP, OPP, and OCP.
• 100,000-hour MTBF for long-term reliability.
Technical Specifications:
• Model: PS-8G1BB-UK C850 SFX GOLD
• Wattage: 850W
• Form Factor: SFX
• ATX Version: ATX 3.1
• Design: Fully Modular
• 80 PLUS Rating: Gold
• Cybenetics Efficiency: Platinum
• Cybenetics Noise: A-
• Dimensions: 125 × 63.5 × 100 mm
• Weight: 0.97 kg
• Capacitors: All 105°C-rated Japanese capacitors
• Cable Type: Individually embossed with cable comb
• 24-pin ATX Power Cable: 350 mm × 1
• 4+4-pin CPU Power Cable: 470 mm × 1
• 6+2-pin PCIe Power Cable: 470 mm × 1
• 16-pin PSU to Dual 8-pin (6+2) PCIe Cable: 470 mm × 2
• 16-pin (12+4) 12V-2x6 PCIe Cable: 470 mm × 1
• SATA Cables: 100 + 100 mm, 6 connectors
• Peripherals Cable: 100 + 100 mm, 3 connectors
• Input Voltage: 100 – 240 Vac
• Input Current: 10 – 5 A
• Frequency: 50 – 60 Hz
• +3.3V and +5V: 20A / 100W
• +12V: 70.83A / 850W
• 5VSB: 3A / 15W
• Total Power: 850W
• 10% Load Efficiency: 85.9% @ 115V
• 20% Load Efficiency: 91.1% @ 115V
• 50% Load Efficiency: 92.1% @ 115V
• 100% Load Efficiency: 89.2% @ 115V
• Fan Size: 92mm
• Fan Type: PWM
• Fan Speed: 3,500 ± 10% RPM
• Airflow: 57 CFM
• Noise Level: 41 dBA
• Bearing: Fluid Dynamic Bearing (FDB)
• Zero RPM Fan Mode: Yes
• Power Factor Correction: Active @ 0.97
• MTBF: 100,000 hours
• Operating Temperature: 0 – 50°C
• Protections: OVP, UVP, SCP, OTP, OPP, OCP
• Warranty: 10 years
• In the Box: C850 SFX GOLD power supply, 24-pin ATX cable, 4+4-pin CPU cable, 6+2-pin PCIe cable, 16-pin PSU to dual 8-pin PCIe cable, 16-pin 12V-2x6 PCIe cable, SATA cables, peripherals cable, AC power cord, and installation accessories.




