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Corsair

CORSAIR SF850 (2024) Fully Modular Low Noise 80 Plus Platinum ATX Power Supply – 3.0 Compliant – PCIe 5.0 Ready – SFX-to-ATX Bracket Included – Black

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Availability: Only 3 left in stock, order soon!
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Arrives Sep 27 – Oct 13
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Style: SF (ATX 3.1 & PCIe 5.1)


Size: 850 Watts


Features

  • 80 PLUS Platinum Rated SFX Power: Massive Platinum-rated power in a compact SFX form-factor, perfect for the most power-dense small-form-factor PCs or saving space in larger cases
  • ATX 3.0 Compliant & PCIe 5.0 Ready: Compliant with the ATX 3.0 power standard from Intel, supporting the PCIe Gen 5 platform and resisting transient power spikes
  • Fully Modular, Type-5 Micro-Fit PSU Connectors: With flexible cabling, taking up less space for tidy cable management and compatibility in small cases
  • 92mm PWM Cooling Fan: Delivers powerful cooling with low-noise operation thanks to a fluid dynamic bearing
  • 105C Rated Japanese Capacitors: For unwavering power and reliability

Description

Give your high-performance SFF PC the power it needs with a CORSAIR SF Series 80 PLUS Platinum SFX Power Supply. ATX 3.0 compliant and PCIe 5.0 ready, the SF Platinum Series delivers high-wattage 80 PLUS Platinum-certified power in a compact form-factor with a fully modular design. A 92mm PWM cooling fan ensures quiet operation, with Zero RPM Mode support for no fan noise at all at low loads. Built exclusively with 105°C rated Japanese capacitors, the SF Platinum Series easily handles high-stress gaming and computing. Includes an SFX-to-ATX bracket for installation in larger cases and a seven-year warranty for total confidence.

Model Name: SF850


Brand: Corsair


Compatible Devices: Monitor


Connector Type: ATX


Output Wattage: 850


Form Factor: SFX


Wattage: 850 watts


Cooling Method: Air


Item dimensions L x W x H: 4.92 x 3.94 x 2.5 inches


Item Weight: 2.3 Pounds


Brand: ‎Corsair


Series: ‎SF850


Item model number: ‎CP-9020256-NA


Item Weight: ‎2.31 pounds


Product Dimensions: ‎4.92 x 3.94 x 2.5 inches


Item Dimensions LxWxH: ‎4.92 x 3.94 x 2.5 inches


Color: ‎Black


Manufacturer: ‎Corsair


Country of Origin: ‎Taiwan


Date First Available: ‎July 2, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 27 – Oct 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Not the same type of cable as SF750
Style: SF (ATX 3.1 & PCIe 5.1) Size: 1000 Watts
Bought these thinking I could reuse the SF750 cable so I just needed to swap the PSU unit only and keep the cable. (Lazy) However, that wasn't the case. the SF1000 uses Type 5 cables that are smaller on the PSU side. I had to do all the cabling again in an existing case, but other than that it does what it does and is perfectly quiet. I don't see any fan spins at idle or little load. I would recommend Corsair SFX PSU over other brands for it's reliability and price compared to other competitors. This is my biased opinion however. ... show more
Reviewed in the United States on June 8, 2025 by David L
    • Simply the best
Style: SF (ATX 3.1 & PCIe 5.1) Size: 750 Watts
The SF750 has long been the go-to, the standard, the best SFX power supply, and for good reason. They are very high quality, very reliable, very efficient PSUs that come with an excellent set of sleeved cables. There are a handful of less expensive alternatives that are absolutely worth considering, but the SF750 is the gold standard. ... show more
Reviewed in the United States on June 10, 2025 by Noah
    • Great SFX power supply
Style: SF Size: 750 Watts
It's the best SFX power supply. I've tried others but the SF750 is the best. Quiet, efficient, reliable. The cables are easier to work with than most others. It isn't the cheapest nor is it outrageous.
Reviewed in the United States on June 6, 2025 by J Hu
    • Perfecta para build ITX
Style: SF (ATX 3.1 & PCIe 5.1) Size: 1000 Watts
Por el momento funciona perfecto, chiquita, compacta y poderosa! Llegó a chile sin problemas por si te interesa saber el tema de envíos a Sudamérica. Otra duda que quizás tengan algunos, en Argentina o Chile (y en otros países de LATAM seguramente igual) usamos 220v, si es tu caso y tenes dudas: No, no hay problema que usen esta fuente. Esta aprobada. Es la fuente perfecta para una ITX. ... show more
Reviewed in the United States on May 16, 2025 by Ma Peretti
    • Best SFX PSU
Style: SF (ATX 3.1 & PCIe 5.1) Size: 850 Watts
Cables are great, extremely quiet under load, no problem hooking everything up. Very efficient, very small, best value SFX PSU.
Reviewed in the United States on June 6, 2025 by Elijah Baez
    • Not quite for 50 series card
Style: SF (ATX 3.1 & PCIe 5.1) Size: 850 Watts
Good psu for itx-build. Quiet enough. Except one thing, that is the 12v-2×6 cable within the box is not very compatiable for NVIDIA 50 series cards and 40 series high-end card. U will need a 12VHPWR 2025 (type4) cables or adapter cable for 50 series card to stop it from black screen and full-speed fan. ... show more
Reviewed in the United States on June 11, 2025 by lingfeng shi
    • SF750 Goat
Style: SF Size: 750 Watts
It’s great and so small
Reviewed in the United States on June 12, 2025 by Luis Eduardo
    • Corsair SFF PSU ✅
Style: SF (ATX 3.1 & PCIe 5.1) Size: 1000 Watts
Power efficiency is top notch. Quiet fan with braided flexible cables. Minus one star because a cable peeled during cable management process. Reminder that a PC shouldn’t be turned completely off after each shutdown. The PSU will take a hit after each switch flip so it’s recommended to have a grounded power. Providing clean power is also recommended so a quality UPS is a must. ... show more
Reviewed in the United States on June 7, 2025 by Smokey Da Bear

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