THERMALTAKE Toughpower GF A3 850W 80+ Gold ATX 3.1 Fully Modular Power Supply ( 850W )

The Thermaltake Toughpower GF A3 850W is a fully modular power supply built to meet the demands of modern and next-generation PC builds. Carrying the 80 PLUS Gold certification, it operates at up to 90% energy efficiency under typical loads, keeping electricity costs down while reducing heat output inside your chassis. Compliant with Intel ATX 3.1 specifications, the GF A3 850W supports power excursions up to 200% of rated capacity—a requirement for modern GPUs that draw sharp transient spikes beyond their average TDP. It also satisfies ATX 3.1 low-load efficiency targets at 60% and adheres to required power supply timing standards, making it a compatible foundation for current and future Intel-platform builds. At the heart of its GPU connectivity is a native PCIe Gen 5.1 16-pin (12VHPWR) connector capable of delivering up to 450W to compatible graphics cards, eliminating the need for daisy-chained adapter cables and reducing the risk of connector stress. Four additional PCIe 6+2 connectors are included for multi-GPU or legacy GPU configurations. The unit runs on a high-amperage single +12V rail, which simplifies power delivery and maximises compatibility across components. Internal circuit design employs LLC resonant conversion and DC-to-DC topology for tight voltage regulation across the 12V, 5V, and 3.3V rails. The 120mm fluid bearing fan operates in Smart Zero Fan mode, remaining completely silent until system load exceeds 40% of rated wattage—ideal for light workloads and desktop use. High-quality Japanese main electrolytic capacitors are used for long-term reliability. Protection circuitry includes Over Current Protection (OCP), Over Voltage Protection (OVP), Under Voltage Protection (UVP), Over Power Protection (OPP), Short Circuit Protection (SCP), and Over Temperature Protection (OTP), covering all major failure scenarios. Fully modular low-profile flat black cables simplify cable management and improve airflow inside the case. The unit is also Intel C6/C7 processor sleep-state ready, enabling deeper CPU power savings. — Verified Specifications — Model: PS-TPD-0850FNFAGD-H-ATX-3-1 Wattage: 850W Efficiency Certification: 80 PLUS Gold ATX Standard: ATX 3.1 Modularity: Fully Modular PCIe Connector (16-pin 12VHPWR): 1 native (up to 450W) PCIe Connectors (6+2-pin): 4 SATA Connectors: 8 Peripheral (4-pin Molex): 4 Fan: 120mm Fluid Bearing, Smart Zero Fan Warranty: 10 Years