FSP HG2-850

FSP HG2-850 Power Supply Overview

The FSP HG2-850 is a high‑performance, fully modular ATX power supply unit (PSU) designed for demanding desktop and gaming systems. With an output of 850 W, it delivers ample headroom for multi‑GPU builds, overclocking, and future upgrades.

Key Specifications

• Form Factor: ATX (standard desktop)
• Maximum Power Output: 850 W
• Efficiency Rating: 80 PLUS Gold – up to 90% efficiency at typical loads, reducing power draw and heat.
• Cooling Solution: Active cooling with a 135 mm fan that maintains low operating temperatures while keeping noise levels minimal.
• Power Factor Correction (PFC): Active PFC ensures stable voltage regulation and compliance with power‑line standards.
• Connector Layout:
  • Motherboard: 20+4 pin ATX
  • Molex (4‑pin): 3 connectors
  • SATA, PCIe, and other peripheral connections are fully modular for clean cable management.
• Dimensions: Width of 150 mm, standard depth and height for typical ATX cases.
• Color: Matte black finish that blends seamlessly with most system builds.
• Reliability: Designed for a mean time between failures (MTBF) of at least 100,000 hours, ensuring long‑term stability.

Modular Design and Cable Management

The FSP HG2-850’s fully modular architecture allows users to attach only the cables required for their specific configuration. This reduces clutter inside the chassis, improves airflow, and simplifies future upgrades or repairs. The high‑quality connectors maintain secure connections even under heavy load.

Performance Under Load

With an 80 PLUS Gold rating, the unit maintains efficiency across a wide range of operating conditions:

• At 20% load (~170 W): ~88% efficiency
• At 50% load (~425 W): ~90% efficiency
• At 80% load (~680 W): ~89% efficiency

This consistent performance translates to lower electricity bills and reduced heat output, which is critical for high‑performance gaming rigs and workstations.

Active Cooling and Noise Management

The 135 mm fan operates on a dynamic speed curve that adjusts based on temperature and load. At idle or low loads, the fan runs quietly, while at higher temperatures it ramps up to maintain optimal PSU temperatures without excessive noise.

Safety and Compliance Features

The FSP HG2-850 incorporates multiple protection mechanisms:

• Over‑Voltage Protection (OVP)
• Under‑Voltage Protection (UVP)
• Short‑Circuit Protection (SCP)
• Over‑Current Protection (OCP)
• Over‑Temperature Protection (OTP)

These safeguards protect both the PSU and connected components from electrical anomalies.

Ideal Use Cases

• High‑end gaming PCs with dual or triple GPUs.
• Content creation workstations requiring stable power for CPUs, GPUs, and storage arrays.
• Custom builds where cable management and low noise are priorities.
• Environments demanding long uptime and reliability, such as home media servers or small business desktops.

Installation Tips