The Antec GSK850 V2 is an 850-watt, fully modular ATX 3.1 power supply designed for modern high-performance PC builds. It supports the latest PCIe 5.1 graphics cards through a dedicated 12V-2x6 cable and features 80 PLUS Gold efficiency for reliable and energy-efficient operation. Equipped with Antec’s PhaseWave LLC + DC-DC topology and the full CircuitShield protection suite, it delivers stable, safe power with long-term durability.

Its Zero RPM fan mode ensures silent operation at low loads, while the compact 140 mm length makes it suitable for a wide range of cases. With a 10-year warranty and updated ATX 12V 3.1 compliance, it is built for next-generation systems.

Power
850W

ATX Standard
ATX 12V 3.1

Efficiency Rating
80 PLUS Gold

Modularity
Full Modular

GPU Support
PCIe 5.1 (12V-2x6 Cable Included)

Input Voltage
100–240V AC, 50–60Hz

Cooling
120mm Silent Fan with Zero RPM Mode

Topology
PhaseWave LLC + DC-DC Design

Protection Features
OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO

Dimensions
140mm (L) × 150mm (W) × 86mm (H)

Weight
Approx. 2.50kg

Operating Temperature
0°C – 40°C

Motherboard Connector
1 × 24-pin (20+4)

CPU Connectors
2 × 8-pin (4+4) EPS

PCIe Connectors
4 × 8-pin (6+2)

12V-2x6 Connector
1 × PCIe 5.1 GPU

SATA Connectors
8 × SATA

Molex Connectors
4 × Molex

Warranty
10 Years