Antec CSK850 PRO 850W PSU – PCIe 5.1 Ready, Semi-Modular, 5-Year Warranty

Antec CSK850 PRO 850W Semi-Modular PSU – PCIe 5.1 Ready, ATX 3.1 Compliant

The Antec CSK850 PRO delivers modern power performance and reliability with ATX 3.1 compliance and PCIe 5.1 support, ready to meet the demands of next-generation GPUs. This 80 PLUS Bronze certified unit offers up to 90% efficiency, helping reduce heat and energy use.

Equipped with a 12V-2x6 (12VHPWR) connector for high-performance graphics cards and a 120mm silent fan with thermal management, it provides efficient, quiet cooling. Its semi-modular design improves cable management and airflow, making it ideal for clean, professional builds.

Key Features

✅ 850W continuous power output
✅ ATX 3.1 compliant, PCIe 5.1 (12VHPWR) ready
✅ 80 PLUS Bronze certified – up to ~90% efficiency
✅ Semi-modular cable design for tidy builds
✅ 120mm silent fan with Thermal Manager control
✅ CircuitShield™ full suite of protections
✅ 5-year manufacturer warranty

Connectors

• 1 x 24-pin ATX main

• 1 x 16-pin PCIe 5.1 (12VHPWR – up to 600W)

• 2 x 8-pin (4+4) CPU EPS

• 4 x 8-pin (6+2) PCIe

• 6 x SATA

• 3 x Molex

Specifications

Model: CSK850 PRO
MPN: 0-761345-20075-2
Form Factor: ATX 12V 3.1 (Semi-Modular)
Wattage: 850W continuous
Efficiency: 80 PLUS Bronze (~90%)
Input Voltage: 200–240V AC, 50–60Hz
Input Current: 12A max
Power Good Signal: 100–150ms
Fan: 120mm silent with thermal speed control
Dimensions (L x W x H): 140 × 150 × 86 mm
Net Weight: Approx. 1.95 kg
Operating Temp: 0–40°C
Certifications: TUV, CB, RCM, CE, BIS, UKCA, KC
Protections: OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO