Open Box Thermaltake Toughpower GF A3 850 Watt Fully Modular PCIE 5.1 80+ Gold Power Supply ATX3.1

Quiet Confidence, Industrial Strength

From the minds at Thermaltake — a name synonymous with refined thermal performance — the Toughpower GF A3 steps in with whisper-quiet precision and enduring strength. Designed around the latest Intel ATX 3.1 and PCIe Gen 5.1 standards, it delivers clean, stable current with the reliability you’d expect from industrial-grade power architecture.

Made for Heavy Lifting

This isn’t just any PSU — it’s built for high-demand, high-throughput hardware. With a native 12VHPWR (12+4-pin) connector, the GF A3 delivers direct, uninterrupted current to today’s most power-hungry graphics cards. A high-amperage single +12V rail ensures consistent voltage delivery across the board, making it a natural fit for performance builds, workstations, and overclocked rigs alike.

Pristine Power

The GF A3 ATX 3.1 boasts 80PLUS Gold certification for high-efficiency operation under typical loads, delivering stable power while minimising heat and waste. It also holds a Cybenetics Platinum rating—an elite-level efficiency badge earned through real-world, multi-load testing. Combined, these certifications ensure the GF A3 delivers clean, consistent power for demanding systems without draining your energy budget.

Smart, Silent, and Always Cool

True to Thermaltake’s thermal pedigree, the cooling system here is whisper-quiet by design. A fluid dynamic bearing fan glides cool air through with minimal resistance, and Smart Zero Fan mode cuts out completely under low loads — keeping things hushed until active airflow is truly needed. It’s a PSU that knows when to roar and when to rest.

Modular by Nature, Efficient by Design

Zero-cable internal routing means less clutter and more breathing room — for both air and aesthetics. The fully modular interface lets you build around your needs with only the cables you want, and each connection is engineered for minimal resistance and maximum efficiency.

Built to Withstand, Certified to Deliver

This unit is more than spec sheet deep — it's backed by a full suite of industrial-grade protections, including OCP, OVP, UVP, OPP, SCP, and OTP. It’s also approved by a wide array of global safety certifications like CB, cTUVus, BSMI, and UKCA, meaning wherever it’s installed, it meets the mark.

• Fully compliant with the latest Intel ATX 3.1 specification and PCIe Gen 5.1, ensuring reliable, next-generation power delivery for high-performance systems.
• 80PLUS Gold and Cybenetics Platinum certified, this unit delivers high-efficiency power with minimal waste, lower heat output, and exceptional reliability for demanding systems and extended uptime.
• The native 12+4-pin modular interface guarantees seamless compatibility with the most cutting-edge components and graphics cards.
• Fully modular design with a high-efficiency zero cable platform and premium build quality.
• Ultra-quiet 120mm fluid-bearing fan delivers outstanding airflow with a whisper-quiet performance.
• Smart Zero Fan technology completely disengages the fan under low loads for silent operation, only spinning up when extra cooling power is needed.
• Supports Intel C6/C7 power states and is ErP ready.
• Built-in industry-grade protections include OCP (Over Current Protection), OVP (Over Voltage Protection), UVP (Under Voltage Protection), OPP (Over Power Protection), SCP (Short Circuit Protection), and OTP (Over Temperature Protection).
• Certified with multiple safety approvals, including FCC, ICES, CB, cTUVus, TUV, LVD, UKCA, BSMI, and CCC certifications.