SILVERSTONE SST DA 1650 G 1650W 80+ Gold Fully Modular ATX 2.0 Power Supply

The SilverStone SST-DA1650-G is a 1650W fully modular ATX power supply from SilverStone’s Decathlon series, carrying an 80 PLUS Gold certification for efficiency of 87% to 90% across 20% to 100% load. Designed for high-end desktop builds, workstations, and multi-GPU configurations, it operates continuously at up to 50°C ambient temperature, making it suitable for demanding environments where thermal headroom matters. The unit features a single +12V rail rated at the full 1650W DC output, ensuring clean and stable power delivery for processors, graphics cards, and storage devices without rail-splitting compromises. Voltage regulation is held to a strict ±2% tolerance across all rails, and ripple and noise performance is kept low for system stability. All internal capacitors are Japanese-sourced, supporting long-term reliability across the rated 100,000-hour MTBF. Cooling is handled by a single 135mm fluid dynamic bearing (FDB) fan with intelligent RPM control. The fan enters a fully fanless mode at loads up to 30% (approximately 495W), then spins up progressively as thermal load increases. Peak noise at full load is rated at 36 dBA, with silent 0 dBA operation during fanless mode. A delayed fan shut-off function continues airflow briefly after system shutdown to dissipate residual heat. Cable management is fully modular, with flat cable construction for easier routing and tighter bends inside the chassis. The connector set covers a wide range of modern and legacy hardware: one 24/20-pin motherboard connector, four EPS/ATX 12V 8/4-pin connectors, twelve PCIe 8/6-pin connectors (eight via daisy-chain cables, four via direct cables), sixteen SATA connectors, six 4-pin peripheral connectors, and one floppy adapter. The ATX form factor body measures 150 mm (W) × 86 mm (H) × 180 mm (D) and weighs 2.09 kg, with the 180mm depth being notably compact for a unit at this wattage tier. Protection circuitry covers over-current, over-power, over-voltage, under-voltage, short-circuit, and over-temperature conditions. Input voltage acceptance spans 90V to 264V at 47–63 Hz with active PFC (power factor >0.9 at full load), making it compatible with standard Indian 230V mains supply. The unit carries the 80 PLUS Gold certification and is compatible with ATX12V v2.4. Verified Specifications: – Model: SST-DA1650-G – Max DC Output: 1650W – Efficiency: 87%–90% (20%–100% load) – Certification: 80 PLUS Gold – Combined +12V: 1650W – Combined +3.3V & +5V: 130W – Input Voltage: 90V–264V AC – Input Frequency: 47Hz–63Hz – PFC: Active (PF >0.9 at full load) – Fan: 135mm FDB, 0–36 dBA, fanless up to ~495W – MTBF: 100,000 hours – Operating Temp: 0°C–50°C – Dimensions: 150 × 86 × 180 mm – Weight: 2.09 kg – Form Factor: ATX / PS2 – Power Density: 711W per litre