Antec GSK850 V2 850W Fully Modular ATX 3.1 Power Supply

The Antec GSK850 V2 is a next-generation 850W power supply engineered for high-performance gaming PCs and professional systems. With full ATX 3.1 compliance, 80 PLUS Gold efficiency and native PCIe 5.1 support via a 12V-2x6 cable, it delivers stable, efficient power for the latest graphics cards and CPUs.

Featuring Antec’s advanced PhaseWave™ LLC + DC-DC topology, fully modular cabling and comprehensive CircuitShield™ protection, the GSK850 V2 offers exceptional reliability and long-term durability. A silent 120mm fan with Zero RPM mode ensures quiet operation at low and medium loads, while the compact 140mm length enhances compatibility with a wide range of PC cases.

Built for demanding builds and backed by a 10-year warranty, this PSU ensures your system is ready for next-generation performance.

Key Features

✓ 850W of continuous, stable power for modern gaming systems
✓ Fully modular design for cleaner cable management and better airflow
✓ ATX 3.1 compliance with native PCIe 5.1 12V-2x6 GPU connector
✓ 80 PLUS Gold efficiency for reduced energy consumption and heat
✓ Silent 120mm fan with Zero RPM mode for quiet operation
✓ PhaseWave™ LLC + DC-DC topology for precise voltage regulation
✓ Complete CircuitShield™ protection suite for maximum system safety
✓ Compact 140mm length for wide chassis compatibility
✓ Backed by a 10-year manufacturer warranty

Technical Specifications

Power Output
850W

ATX Standard
ATX 12V 3.1

Efficiency Rating
80 PLUS Gold

Modularity
Fully 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

Protections
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

Connectors

Motherboard
1 × 24-pin (20+4)

CPU
2 × 8-pin (4+4) EPS

PCIe
4 × 6+2-pin PCIe
1 × 12V-2x6 PCIe 5.1 GPU

SATA
8 × SATA

Molex
4 × Molex

Why Choose the Antec GSK850 V2?

The GSK850 V2 is engineered for builders who want efficiency, stability and next-gen readiness. Its ATX 3.1 standard, PCIe 5.1 GPU support and proven PhaseWave™ power delivery ensure dependable operation under heavy loads. The silent fan and fully modular layout enhance both acoustics and cable management, while the comprehensive protection suite guarantees system safety. With a 10-year warranty, this power supply is a long-term investment for high-end gaming and workstation builds.