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Black fully modular ATX 3.1 power supply with 135mm fan and native 12V-2x6 connector

ASRock

ASRock SL-850G 850W ATX3.1 PCIe5.1 full modular power supply

SKU CH-FGHV-EM12W MPN SL-850G

Fully modular 850 W ATX 3.1 unit with Cybenetics Titanium efficiency, Lambda A+ acoustics and a native 12V-2x6 connector

  • ColorBlack
  • TypeATX3.1 & PCIe5.1
  • Maximum Power850 W
  • Fans135mm Striped Axial FDB Fan
  • ModularFull Modular
  • Energy-EfficientCybenetics Titanium

Options 850W

  • 850 W continuous power backed by 80 PLUS Gold and Cybenetics Titanium efficiency
  • Fully modular cables with native 12V-2x6 connector simplify GPU installation
  • 135 mm striped axial FDB fan runs below 20 dB average for Cybenetics Lambda A+ quiet
  • ATX 3.1 and PCIe 5.1 compliant for modern platform support
  • iCool intelligent fan control stops the fan at low load for silent operation

Power delivery for mainstream builds

The ASRock SL-850G is an 850 W ATX 3.1 power supply built for mainstream desktop systems. Full modular cabling keeps the interior tidy and improves airflow. Japanese capacitors and dual certifications support reliable, efficient operation.

ATX 3.1 and PCIe 5.1 limits

The unit follows the ATX 3.1 and PCIe 5.1 specifications, including a native 12V-2x6 connector for modern graphics cards. Cybenetics Titanium and Lambda A+ ratings confirm high efficiency and an average noise level below 20 dB under typical loads.

Compatibility checks before ordering

Verify that your case accepts a standard ATX form-factor power supply and that the 135 mm fan has adequate clearance. Ensure your motherboard and graphics card require the 12V-2x6 connector or the included modular cables. Select iCool mode based on your preferred balance between silent operation and continuous cooling.

Highlights

  • 850 W continuous power backed by 80 PLUS Gold and Cybenetics Titanium efficiency
  • Fully modular cables with native 12V-2x6 connector simplify GPU installation
  • 135 mm striped axial FDB fan runs below 20 dB average for Cybenetics Lambda A+ quiet
  • ATX 3.1 and PCIe 5.1 compliant for modern platform support
  • iCool intelligent fan control stops the fan at low load for silent operation

Specifications

BrandASRock
ModelSL-850G
ColorBlack
TypeATX3.1 & PCIe5.1
Maximum Power850 W
Fans135mm Striped Axial FDB Fan
ModularFull Modular
Energy-EfficientCybenetics Titanium
PSU Noise LevelCybenetics A+
Shipping weight1.36 kg
Package size305 × 184 × 131 mm

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Questions about this item

Which capacity in the Steel Legend series fits a mainstream build that needs 850W?

The 850W model is one of four capacities — 650W, 750W, 850W and 1000W — so you select the one that matches your system's power target.

What does the 850W rating mean when the unit is installed in a PC?

It can deliver up to 850W continuously while meeting 80 PLUS Gold and Cybenetics Titanium efficiency, and it stays below 20 dB on average thanks to the 135mm FDB fan and iCool control.

What does the ATX3.1 and PCIe5.1 label cap in practice?

It confirms the PSU includes a native 12V-2x6 connector and meets the current ATX3.1 and PCIe5.1 specifications for modern graphics cards.

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