Power supply SILVERSTONE ST1200-PTS 1200 W 80 PLUS Platinum, 20+4 pin ATX, 120 mm fan, Black

The SILVERSTONE ST1200-PTS is an ATX power supply that delivers 1200 W of total continuous power with 80 PLUS Platinum efficiency, making it suitable for high-performance desktop and workstation systems. It uses a standard 20+4 pin ATX motherboard connector, includes a 120 mm active cooling fan, and accepts a wide input voltage range of 100–264 V AC at 47–63 Hz. The unit comes in a compact ATX-compatible housing with a black finish and a weight of approximately 2 kg.

Advantages

The 80 PLUS Platinum certification corresponds to an efficiency of about 92%, which reduces heat generation and can lower energy costs under typical loads. With a rated 1200 W total output the power supply supports multi-component and high-load configurations. The compact ATX form factor and standard 20+4 pin connector ensure compatibility with many desktop motherboards. The integrated 120 mm fan provides active cooling while maintaining reasonable acoustic levels for desktop environments.

Suitable for

• High-performance gaming PCs with multiple GPUs or overclocked components
• Workstation builds for video editing, rendering, and CAD applications
• Servers and small rack-like desktop systems that require reliable continuous power
• System upgrades where higher wattage and improved efficiency are needed

Key specifications

• Total power: 1200 W
• Efficiency: approximately 92% (80 PLUS Platinum)
• Motherboard power connector: 20+4 pin ATX
• Cooling: 120 mm active fan
• Input voltage range: 100–264 V AC, 47–63 Hz
• Form factor: compact ATX housing (150 × 140 × 86 mm)
• Colour: Black
• Weight: about 2 kg

How to use

Install the SILVERSTONE ST1200-PTS in a compatible ATX case following standard safety practices: disconnect mains power before installation, secure the unit with mounting screws, and connect the 20+4 pin ATX connector to the motherboard. Connect power cables to components according to the motherboard and component manufacturers' instructions. Verify that the input voltage selector (if present) or automatic input range corresponds to the local mains supply, then apply mains power and power on the system to confirm stable operation.

Recommendations

For reliable long-term operation, ensure adequate case airflow and avoid prolonged maximum-load operation without sufficient cooling. Use this power supply with systems that require high continuous power and choose appropriate surge protection or an uninterruptible power supply (UPS) when deploying sensitive workstation or server equipment.