Antec ATOM G850 PSU | 850W 80+ Gold Semi-Modular Power Supply

The Antec ATOM G850 is engineered for enthusiasts who demand high efficiency and stable power delivery without the premium price tag of fully modular units.

With its 80 PLUS Gold certification, this unit ensures that up to 92% of the power drawn from the wall is successfully delivered to your components, leading to a cooler-running system and lower electricity bills.

The semi-modular design is a builder’s favorite; essential cables like the 24-pin and CPU power are pre-attached, while peripheral and PCIe cables can be added as needed.

This reduces clutter and significantly improves airflow within your chassis. Internally, the ATOM G850 utilizes a DC-to-DC module design and Active PFC to maintain tight voltage regulation.

To keep things quiet, the integrated Thermal Manager optimizes the 120mm silent fan’s speed based on heat levels, ensuring your gaming sessions remain immersive and distraction-free.

What It’s Good For or Fun Facts

• High-End Hardware: With 850W of Gold-rated power, this unit easily handles power-hungry components like the RTX 30/40 series and high-core-count Ryzen or Intel CPUs.

• The Smart Middle Ground: Semi-modular PSUs are often considered the “smart choice” because the cables you must use are already attached, but you still get the airflow benefits of a modular unit.

• Compact Integration: At 140mm deep, it fits comfortably in smaller ATX cases where space for cable management is limited.

• Fun Fact: Antec’s CircuitShield™ isn’t just a marketing name; it represents a full suite of 7 different protection layers that act like a “seatbelt” for your PC’s expensive internal parts.

Good to Knows

• SA Power Ready: This unit is optimized for 200-230 VAC input, making it a highly efficient match for South African power standards.

• Flat Cable Design: The modular cables are flat and flexible, making them much easier to fold and route through tight grommets than traditional sleeved cables.

• Dual EPS Connectors: Includes two 8-pin (4+4) EPS connectors, making it compatible with high-end motherboards that require extra CPU power for overclocking.

• Warranty: Backed by a 5-year (60 months) warranty, showing Antec’s confidence in their ATOM series’ longevity.

Product Information & Specifications

• Wattage: 850W

• Efficiency Rating: 80 PLUS Gold (Up to 92%)

• Modularity: Semi-Modular

• Fan Type: 120mm Silent Fan with Thermal Manager

• Protections: OCP / UVP / OVP / OPP / SCP / OTP / NLO (CircuitShield™)

• PFC: Active PFC

• Connectors:

  • 1x Motherboard 24(20+4) Pin

  • 2x 8(4+4) Pin EPS 12V (CPU)

  • 4x 8(6+2) Pin PCI-E (GPU)

  • 6x SATA

  • 3x Molex

• Dimensions: 140 x 150 x 86 mm

• Warranty: 5-Year Limited Warranty