Corsair SF850L Fully Modular Low-Noise SFX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - Quiet 120mm PWM Fan - 80 PLUS Gold Efficiency - Zero RPM Mode - 105°C-Rated Capacitors - Black
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Corsair SF850L Fully Modular Low-Noise SFX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - Quiet 120mm PWM Fan - 80 PLUS Gold Efficiency - Zero RPM Mode - 105°C-Rated Capacitors - Black

4.4/5
Product ID: 529446343
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Details

  • Model name
    SF850L
  • Brand
    Corsair
  • Compatible devices
    Personal
  • Connector type
    ATX
  • Output wattage
    850
  • Form factor
    SFX
850W continuous power
💻ATX 3.1 & PCIe 5.1 certified
🔇Zero RPM near-silent mode

Description

⚡ Power meets silence in a sleek, space-saving package.

  • SLEEK MODULAR DESIGN - Fully modular Micro-Fit connectors enable clean cable management and maximize airflow.
  • WHISPER QUIET COOLING - 120mm PWM fan with Zero RPM mode keeps noise to a minimum when demand is low.
  • GOLD STANDARD EFFICIENCY - 80 PLUS Gold certification ensures up to 90% energy efficiency, reducing heat and power waste.
  • FUTURE PROOF COMPATIBILITY - Fully compliant with Intel ATX 3.1 and PCIe Gen 5.1 standards for next-gen hardware.
  • POWERHOUSE IN A COMPACT FRAME - 850W continuous output perfect for high-performance small-form-factor builds.

The Corsair SF850L is a compact, fully modular SFX-L power supply delivering 850 watts of continuous power. It features a quiet 120mm PWM fan with Zero RPM mode for near-silent operation, and is certified to Intel ATX 3.1 and PCIe 5.1 standards, ensuring compatibility with the latest hardware. With 80 PLUS Gold efficiency and 105°C-rated capacitors, it offers reliable, energy-efficient performance ideal for high-density small-form-factor PCs or space-conscious builds.

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Specifications

BrandCorsair
Product Dimensions13 x 12.5 x 6.35 cm; 1.12 kg
Item model numberCP-9020245-UK
ManufacturerCorsair
SeriesSF850L
ColourBlack
Form FactorSFX
Voltage240 Volts
Wattage850 watts
Are Batteries IncludedNo
Item Weight1.12 kg
Guaranteed software updates untilunknown

Have a Question? See What Others Asked

Is this sfx psu ok for lian li 011d mini and a rtx 4080 ? or which one is best which comes with cables (ideally white). thanks
Can you use normal hard drives? What connectors do i need or dose this power supply come with them
How long is the 24pin ATX cable? I had to replace the one that came with the SF750 as it was too short.

Reviews

4.4

All from verified purchases

T**R

unbelievably superb!

I have this PSU for around 3-4 months now. I can say it is the beast. The quality and the cable selection is good. The best part is, even in the tiny ITX case with, Ryzen 7700X, 96 GB ddr5, 3 x NVME Drives, 5 Sata SSD's and 1 Sata 2.5" 7K2 disk + Nvidia RTX 2080Ti, PSU fan is not even turning fir the all idle and most of the workloads. To be honest, I am not a gamer, but the system pulls around 110W idle and 370-400W during the high workload and 150-170w(Fan is not even making single spin AMAZING!) during standard working times. The efficiency is also good. Definitely suggesting.

J**N

A Compact & future proof little powerhouse.

What can I say I love this little PSU, so much so I've brought an additional few more. But less about my purchasing habits & onwards to my review.This small-form-factor power supply packs a surprising punch. With its 1000W output and fully modular cables, it's perfect for high-performance builds in compact cases.The SF1000L's quiet operation and 80 PLUS Gold efficiency make it a great choice for anyone who values both performance and energy efficiency. Its zero RPM mode ensures near-silent operation under low loads.If you're looking for a reliable and powerful power supply for your compact PC, the Corsair SF1000L is definitely worth considering.

J**Y

Perfect quality and keeps a low temp

Perfect as with all Corsair products I’m yet to find a fault with any of there products. Buy it

A**N

Quiet and long enough cables for ATX case

I bought some cable extensions for this because I heard the ones with the PSU are "Unbendable and too short." But they would've been fine in my ATX case. Quiet fan and feels quality.

C**.

Not the best option for ATX boards.

This PSU is marketed as compatible with mTX and ATX setups, and it includes a bracket for additional case flexibility. Unfortunately, the supplied cables are too short to reach the motherboard and GPU power sockets without the need for separate extension cables. Despite this inconvenience, the unit's performance is satisfactory, and it operates very quietly.

M**A

Made the mistake to buy Corsair once again!!

Before you buy:Cables are FAR too short, they provide you with an adaptor to fix in bigger cases and guess what, all cables are the wrong size, they are very very short and hard to bend!The connectors coming out from the power supply are FAR too small, they are not the standard same connector size as the ones going to motherboards for example, they are HALF THE SIZE, find replacement and pray they won't burn or break!Returned, I said I wouldn't buy Corsair again some years ago and yet I make the same mistake!

R**U

Works :)

Little gem !

A**Z

Firm cables really hard to bend for sff builds

Firm cables . Will not bend easily which is not good for sff builds where you have to bend cables to fit on sides

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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£188.20

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Corsair Sf850l Fully Modular Low Noise Sfx Power Supply Atx | Desertcart GB