Antec MEGA 850W 80 PLUS Gold ATX3.1 PCIE 5.1 Fully Modular Power Supply

Power users assembling a high-performance gaming rig or a demanding workstation will appreciate the Antec MEGA 850W. This fully modular ATX power supply delivers stable, efficient power with 80 PLUS Gold certification, ensuring your components run smoothly even under heavy loads. Its ATX 3.1 and PCIe 5.1 compliance means it's ready for next-generation graphics cards, including the 12VHPWR connector.

Key specifications

• 850W total power output with 80 PLUS Gold efficiency (up to 92%)
• ATX form factor, fully modular cable design for clean builds
• ATX 3.1 and PCIe 5.1 support with native 12VHPWR connector
• 120mm fluid dynamic bearing fan for quiet, reliable cooling
• 100% Japanese capacitors for long-term durability
• Comprehensive protection: OVP, UVP, SCP, OPP, OTP, SIP, NLO
• Connectors: 1x 24-pin ATX, 2x 4+4-pin EPS, 1x 12VHPWR, 4x 6+2-pin PCIe, 8x SATA, 4x Molex
• Active PFC with 100-240V AC input for worldwide compatibility

Why choose it

The Antec MEGA 850W combines modern standards with proven reliability. Its fully modular design simplifies cable management, while the Gold efficiency reduces heat and energy waste. With a 100,000-hour MTBF and Japanese capacitors, it's built to last through multiple upgrades.

Ideal use cases

• High-end gaming PCs with RTX 40-series or Radeon RX 7000-series GPUs
• Content creation workstations for video editing and 3D rendering
• Small form factor builds needing a compact, efficient PSU
• Systems requiring stable power for overclocking

Good to know

The PSU includes a 12VHPWR cable for direct connection to modern graphics cards, eliminating the need for adapters. Its fluid dynamic bearing fan ensures quiet operation even at moderate loads, and the active PFC keeps power delivery clean and efficient.