Power Supply Unit Silverstone DA850R 850 W

The Silverstone DA850R 850 W is a fully modular power supply unit designed for desktop PCs and servers. It delivers up to 850 W of continuous power through a 20-pin ATX motherboard connector, meets 80 PLUS Gold efficiency standards, and accepts an AC input range of 90–264 V. The compact PSU (150 × 140 × 86 mm) features a 120 mm cooling fan with semi-fanless operation and flat cables for improved cable management.

Advantages

The DA850R provides stable, high-efficiency power delivery with an 80 PLUS Gold rating to reduce wasted heat and electricity. Flat cables increase flexibility for tighter routing and neater builds, while a specially designed cover helps dissipate residual heat. A single powerful +12V rail supports high-end component upgrades and overclocking. The unit also implements multiple advanced protections including over current, over power, over voltage, short circuit, under voltage and over temperature protection.

Suitable for (tasks / use cases)

• High-performance desktop PCs with discrete graphics cards
• Workstations and small servers requiring reliable, continuous power
• Systems using ATX 3.0 / 12V-2x6 (12+4 pin) GPU connectors
• Builds where compact size and tidy cable management are important

Key specifications

• Total power: 850 W
• Efficiency: 80 PLUS Gold (approximately 89% typical)
• Motherboard connector: 20-pin ATX
• GPU power connector: 12V-2x6 (12+4 pin) supporting ATX 3.0
• Fan: 120 mm, semi-fanless operation
• Input voltage: AC 90–264 V
• Dimensions: 150 × 140 × 86 mm
• Weight: 2.13 kg
• Colour: White

How to use

Install the DA850R into a compatible PC case using the supplied mounting screws and connect the 20-pin ATX motherboard cable. Attach required peripheral and GPU cables from the modular connectors, using the 12V-2x6 (12+4 pin) connector for graphics cards that require ATX 3.0 support. Ensure the mains cable is connected to a properly rated AC outlet within 90–264 V. Power on the system and monitor operation; the semi-fanless 120 mm fan will remain quiet at low load and increase speed as thermal load rises.

Recommendations

For stable long-term operation, keep ventilation around the PSU unobstructed and route flat cables to avoid blocking airflow. Verify connector compatibility with your GPU before installation and allow for adequate case ventilation when planning high-power or overclocked systems.