Corsair SF-L Series SF850L 850W Power Supply, Fully Modular

Rated output

Efficiency

PSU format

Cable layout

Power for the Complete Configuration

The unit is rated for 850 W continuous output. Choose the supply around the complete system’s power requirements, including the processor, graphics card, drives and expansion hardware. The output rating describes its supply capacity; the actual power drawn by the computer depends on the installed components and the workload. Check both the power requirement and the required connectors when planning an upgrade.

80 PLUS Gold Efficiency

80 PLUS Gold certification describes the power supply’s conversion efficiency under the certification test conditions. It complements the model’s output rating when selecting a supply for the intended system. Efficiency varies with input conditions and load, so the certification should be read alongside the electrical ratings and the complete configuration rather than as a fixed efficiency at every operating point.

Connections Chosen for This Model

The fully modular cable layout lets you connect the leads required by the installed hardware and keep unused leads outside the case. Connections include one 24-pin motherboard connector, two 4+4-pin CPU connectors, one 16-pin 12VHPWR connector, 4 PCIe 6+2-pin connectors, eight SATA power connectors and three peripheral connectors. Use the appropriate motherboard, CPU and graphics connections for each component. Keep the PSU’s own modular cable set with the unit, and use replacement leads only when the manufacturer confirms compatibility with this exact PSU and cable interface.

Cooling That Follows the Load

A 120 mm fan supports Zero RPM operation at suitable lower loads. Leave the case’s PSU intake and exhaust routes clear and position the supply according to the case guidance. Fan speed and operating noise depend on the system load, temperature and airflow around the enclosure. A low-load fan-stop mode, where provided, works as part of that control behaviour rather than guaranteeing silent operation in every workload.

Check the Case and Cable Clearance

Its SFX-L enclosure measures 130 × 125 × 63.5 mm. An SFX-L unit needs more depth clearance than a conventional SFX unit. Match the PSU bay, mounting points and cable-routing space with the case before installation. Account for the connected plugs and their routing space as well as the metal enclosure itself. Arrange the cables so that the case panel can close without placing strain on the connections, and retain access to the power switch and AC inlet in the finished system.

Model

CORSAIR SF850L

Rated output

850 W continuous output

Efficiency certification

80 PLUS Gold

What is the rated output?

850 W continuous output.

Which efficiency certification does it have?

80 PLUS Gold.

How do I check case compatibility?

Its SFX-L enclosure measures 130 × 125 × 63.5 mm. An SFX-L unit needs more depth clearance than a conventional SFX unit. Match the PSU bay, mounting points and cable-routing space with the case before installation.

What power connections are available?

Connections include one 24-pin motherboard connector, two 4+4-pin CPU connectors, one 16-pin 12VHPWR connector, 4 PCIe 6+2-pin connectors, eight SATA power connectors and three peripheral connectors.

Can modular cables be shared between different PSUs?

Only use a replacement cable when its manufacturer confirms compatibility with this exact PSU and cable interface. Keep the unit’s supplied modular cable set with the PSU.