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

$98.00

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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

$98.00

Antec CSK850 PRO 850 W Semi-Modular ATX 3.1 Power Supply

The Antec CSK850 PRO is an 850 W semi-modular power supply built 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 via its native 12V 2x6 (12VHPWR) connector. With 80 Plus Bronze efficiency and advanced CircuitShield™ protection, this PSU delivers reliable, efficient, and safe power for demanding builds.

A compact design, quiet 120 mm fan with intelligent thermal control, and semi-modular cable layout make installation straightforward and help improve system airflow. Backed by a 5-year warranty, the CSK850 PRO is a future-proof choice for performance-oriented systems.

Key Features

850 W continuous output for gaming and high-performance PCs
ATX 3.1 compliant and PCIe 5.1 ready
Native 12V 2x6 (12VHPWR) connector for the latest GPUs
80 Plus Bronze efficiency (up to ~90%)
CircuitShield™ protection suite for safe power delivery
Semi-modular cabling for cleaner builds and improved airflow
120 mm silent fan with thermal manager fan speed control
Compact ATX form factor for easy installation
5-year warranty

Full Specifications

Specification	Details
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 (CircuitShield™)	OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO
Cooling	120 mm silent fan with thermal manager 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
Operating Temperature	0–40 °C
Certifications	TUV, CB, RCM, CE, BIS, UKCA, KC
Warranty	5 years