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White fully modular ATX power supply with native 12V-2x6 connector

Thermaltake

Thermaltake Toughpower GT 850W Snow ATX 3.1 Power Supply

SKU CH-1D1W-N4N5Y

850 W ATX 3.1 power supply with 80 Plus Gold efficiency, native 12V-2x6 PCIe 5.1 connector and 120 mm Smart Zero Fan

  • TypeATX 3.0 Compatible
  • Up to 90% efficiency with 80 PLUS Gold and ATX 3.1 compliance
  • Native 12V-2x6 PCIe 5.1 connector delivers 600W to next-gen GPUs
  • Smart Zero Fan stops the 120mm hydraulic bearing fan at low loads for silent operation
  • Fully modular low-profile white cables simplify routing and improve airflow
  • Six protections including OCP, OVP, UVP, OPP, OTP and SCP safeguard components

White ATX 3.1 power supply for high-end builds

The Thermaltake Toughpower GT Snow 850W delivers 80 Plus Gold efficiency up to 90 percent while meeting ATX 3.1 requirements. Fully modular low-profile white cables keep cable routing clean and airflow unobstructed. A native 12V-2x6 connector rated for 600W supports current PCIe 5.1 graphics cards without adapters. Builders who need more than 850W of continuous power should consider a higher-capacity unit.

Smart Zero Fan keeps noise low at idle

A 120mm hydraulic bearing fan stops completely under light loads thanks to Smart Zero Fan operation. Below the fan-start threshold the power supply runs silently while maintaining stable voltage rails. Protection circuits including OCP, OVP, UVP, OPP, OTP and SCP guard connected components during normal use. The white finish matches modern aesthetic themes without affecting thermal performance.

Sustained load handling with Gold efficiency

Under continuous demand the unit maintains Gold-rated efficiency up to 90 percent, reducing waste heat and electricity draw. The hydraulic bearing fan ramps smoothly to dissipate heat during extended gaming or rendering sessions. ATX 3.1 compliance ensures transient response meets current GPU power-excursion specs. Systems requiring dual 600W GPU connectors or redundant power paths fall outside this single-rail design.

Highlights

  • Up to 90% efficiency with 80 PLUS Gold and ATX 3.1 compliance
  • Native 12V-2x6 PCIe 5.1 connector delivers 600W to next-gen GPUs
  • Smart Zero Fan stops the 120mm hydraulic bearing fan at low loads for silent operation
  • Fully modular low-profile white cables simplify routing and improve airflow
  • Six protections including OCP, OVP, UVP, OPP, OTP and SCP safeguard components

Specifications

TypeATX 3.0 Compatible

Questions about this item

How do I connect the native 12V-2x6 cable to my graphics card without bending it too sharply?

Route the fully modular white cable behind the motherboard tray, leave a gentle curve at the connector, and seat the 12+4 pin firmly until the latch clicks.

Which part will likely need attention first after a few years of daily use?

The 120 mm hydraulic-bearing fan is the only moving component; dust buildup or bearing wear there will appear before any electrical part degrades.

What limit appears first when the unit runs near full load for extended periods?

The 600 W native PCIe 5.1 connector rating caps GPU power delivery before the 850 W total capacity becomes a constraint.

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