Antec CSK850 PRO 850W Semi-Modular ATX 3.1 Power Supply PCIe 5.1 Ready with 12V 2x6 Connector 80 Plus Bronze Certified Quiet 120mm Fan 5-Year Warranty

The Antec CSK850 PRO is an 850 W semi-modular power supply designed for modern gaming and high-performance PCs. Compliant with the ATX 3.1 standard and PCIe 5.1 ready it supports the latest graphics cards through its native 12V 2x6 (12VHPWR) connector. Featuring 80 Plus Bronze efficiency and advanced CircuitShield™ protection this PSU ensures reliable efficient and safe power delivery. Its compact design quiet 120 mm fan with intelligent thermal control and semi-modular cables make installation easy and improve system airflow. Backed by a 5-year warranty it is a future-proof choice for demanding PC builds.

Full Specifications

Model:
CSK850 PRO

MPN:
0-761345-20071-4

Form Factor:
ATX 12V 3.1 semi-modular

Wattage:
850 W continuous

Efficiency:
80 Plus Bronze (up to ~90%)

ATX Standard:
ATX 3.1

PCIe Support:
PCIe 5.1 native 12V 2x6 GPU connector

Protection Features (CircuitShield™):
OCP OVP UVP SCP OPP OTP SIP NLO

Cooling:
120 mm silent fan with thermal manager fan speed control

PFC:
Active PFC

Power Good Signal:
100–150 ms

Input Voltage:
200–240 V AC 12 A max 50–60 Hz

Dimensions (L x W x H):
140 x 150 x 86 mm

Net Weight:
Approximately 1.95 kg

Connectors:
1 x 24-pin ATX main
1 x 16-pin (12+4) PCIe 5.1 (12VHPWR up to 600 W)
2 x 8-pin (4+4) CPU EPS
4 x 8-pin (6+2) PCIe
6 x SATA
3 x Molex

Operating Temperature:
0–40 °C

Certifications:
TUV CB RCM CE BIS UKCA KC

Warranty:
5 years