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Compact black ATX PSU, 140 mm deep, full modular cables, single 120 mm fan

Seasonic

Seasonic FOCUS GX-850 850W power supply

SKU CH-K7FW-NQRC5 MPN FOCUS GX-850

Fully modular 850 W ATX unit with 80 Plus Gold efficiency, a 120 mm fluid-dynamic fan, and 140 mm depth for compact builds

  • TypeATX12V / EPS12V
  • Maximum Power850 W
  • Fans1 x 120mm Fluid Dynamic Bearing
  • Main Connector20+4Pin
  • +12V RailsSingle
  • PCI-Express Connector6 x 6+2-Pin

Options ATX Gold (850W)

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  • 850 W output powers demanding builds with a single +12 V rail
  • 80 PLUS Gold certification cuts wasted energy during conversion
  • Full modular cabling uses only needed wires for better airflow
  • 140 mm depth fits every ATX case for easier routing
  • Fluid dynamic bearing fan runs quietly with hybrid fan control modes

Compact 850 W ATX power supply

The Seasonic FOCUS GX-850 delivers 850 W of continuous power in a 140 mm deep ATX form factor that fits all standard cases. Its fully modular cable set lets you connect only the leads your build requires, reducing clutter and improving airflow. The unit carries 80 PLUS Gold certification and uses premium Japanese capacitors for reliable efficiency. It is built for modern GPU platforms including RTX 30 and 40 Super series cards.

Sustained-load behaviour and cooling

A single +12 V rail rated at 70 A provides stable output during extended gaming or rendering sessions without the voltage droop seen in multi-rail designs. The 120 mm fluid-dynamic-bearing fan runs under a hybrid control scheme that offers a choice between S2FC and S3FC modes, the latter enabling a fanless state at low loads. Cybenetics Standard+ rating confirms low acoustic output across typical operating ranges. MTBF exceeds 100 000 hours, indicating long-term durability under continuous use.

Compatibility checks before ordering

Verify that your case can accommodate a 140 mm deep power supply and that the motherboard accepts a 20+4 pin main connector plus the required EPS12V cable. Count the PCIe devices you plan to power; the unit supplies six 6+2 pin connectors for graphics cards. Ensure you have enough SATA power headers for drives, as ten are provided. Confirm your mains supply falls within the 100–240 V, 50/60 Hz input range.

Helstu kostir

  • 850 W output powers demanding builds with a single +12 V rail
  • 80 PLUS Gold certification cuts wasted energy during conversion
  • Full modular cabling uses only needed wires for better airflow
  • 140 mm depth fits every ATX case for easier routing
  • Fluid dynamic bearing fan runs quietly with hybrid fan control modes

Tæknilýsing

BrandSeaSonic
SeriesFOCUS GX
ModelFOCUS GX-850 (SSR-850FX)
TypeATX12V / EPS12V
Maximum Power850 W
Fans1 x 120mm Fluid Dynamic Bearing
Main Connector20+4Pin
+12V RailsSingle
PCI-Express Connector6 x 6+2-Pin
SATA Power Connector10
Max PSU Length140 mm
ModularFull Modular
Energy-Efficient80 PLUS GOLD Certified
PSU Noise LevelCybenetics Standard +
Input Voltage100 - 240 V
Input Frequency Range50/60 Hz
Input Current12 - 6 A
Output+3.3V@20A, +5V@20A, +12V@70A, [email protected] , +5Vsb@3A
MTBF>100,000 Hours
ApprovalsEnergy Star, RoHS, WEEE, ErP Lot 6, REACH
Connectors1 x Main Power
2 x 4/8 Pin CPU
6 x PCIE
10 x SATA
5 x Peripheral
1 x FDD
Features80 PLUS Gold certified
Compact Size - 140 mm deep
Tight Voltage Regulation
Cable-free Connection Design
S3FC - Fanless until 30 % load
Multi-GPU setup
Gold plated connectors
Dimensions3.39" x 5.91" x 5.51"
Weight7.30 lbs.
Sendingarþyngd3.08 kg
Stærð sendingar323 × 193 × 119 mm

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Spurningar um þessa vöru

Will the 140 mm depth fit in my ATX case?

The unit is 140 mm deep, which is the standard depth for ATX power supplies and fits all ATX cases.

How many PCIe power connectors are included for graphics cards?

Six 6+2-pin PCIe connectors are supplied, enough for most single or dual GPU setups.

Can I run the fan in a completely silent mode?

Yes, the hybrid fan control offers an S3FC setting that enables fanless operation at low loads.

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