SKU: 15549691764

Antec SF850X SFX 4.1 ATX3.1 80 PLUS Gold Fully Modular Power Supply

Sale price$1552.05 Regular price$1724.50
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Description

Antec SF850X SFX 4.1 ATX3.1 80 PLUS Gold Fully Modular Power SupplyQuick Specs 850W power supply for demanding gaming systems. ATX 3. 1 and PCIe 5. 1 ready for next gen components. 92mm silent fan for quiet operation. Full modular design for easy cable management. 80 Plus Gold certified for up to 90% efficiency. Power Your High Performance Gaming Rig Antec's SF850X 850W Power Supply provides the robust and reliable power needed for demanding gaming systems and high end PC builds. Delivering 850W of continuous power,

Quick Specs

  • 850W power supply for demanding gaming systems.
  • ATX 3.1 and PCIe 5.1 ready for next-gen components.
  • 92mm silent fan for quiet operation.
  • Full-modular design for easy cable management.
  • 80 Plus Gold certified for up to 90% efficiency.

Power Your High-Performance Gaming Rig

Antec's SF850X 850W Power Supply provides the robust and reliable power needed for demanding gaming systems and high-end PC builds. Delivering 850W of continuous power, this unit ensures your components receive stable and efficient energy, even under heavy loads.

Experience the Future of Power with ATX 3.1 and PCIe 5.1

Designed with the latest ATX 3.1 and PCIe 5.1 standards, the SF850X is ready for the next generation of graphics cards and motherboards. Benefit from improved power delivery, enhanced stability, and future-proof compatibility, ensuring your system stays ahead of the curve. Experience the pinnacle of performance with this modular power supply.

Enjoy Whisper-Quiet Operation

The 92mm silent fan intelligently adjusts its speed based on the system's temperature, providing efficient cooling with minimal noise. This ensures a quiet and comfortable gaming or working environment, even during intense sessions. The 850W power supply ensures peak performance, silently.

Build with Confidence Using a Fully Modular Design

The fully modular power supply design allows you to use only the cables you need, reducing clutter and improving airflow inside your case. This makes building and maintaining your system easier while also enhancing its overall aesthetics. The full-modular cabling includes: * 1x 24(20+4)-Pin * 2x 4+4-Pin CPU * 1x 12VHPWR * 4x 6+2-Pin PCI-E * 8x SATA * 3x Molex

Invest in Long-Lasting Reliability

Backed by an 80 Plus Gold certification, the Antec SF850X delivers up to 90% efficiency, reducing heat generation and saving on energy costs. Its high-quality components and comprehensive protection circuits (OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO) ensure long-lasting performance and peace of mind. The 850W Power Supply comes with a ten-year warranty for complete reassurance.

FEATURES:

  • ATX 3.1 & PCIe 5.1 Compatible
  • 80 PLUS Gold Certification
  • High-Quality JP Capacitors
  • Compact size ideal for ITX builds
  • Full modular cable management
  • Circuitshield protection including OCP, OVP, UVP, SCP, OPP, OTP, SIP, and NLO
  • 7-year warranty

SPECIFICATIONS:

  • Type: ATX 12V 3.1 (SFX 4.1)
  • Modular: Full-Modular
  • Input Voltage: 100V-240V
  • Input Current: 12A-6A
  • Input Frequency Range: 60Hz-50Hz
  • PFC: Active PFC
  • Power Good Signal: 100-150ms
  • Protection: OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO
  • Output Capacity: 850W
  • Operation Temperature: 0~40°C
  • Regulatory:  cTUVus / TUV / CB / RCM / CE / FCC / BIS / BSMI / KC / UKCA / ICES / CCC
  • Fan: 92mm Silent Fan
  • Certifications: 80 Plus Gold
  • Connectors:
    • 1 x 24(20+4)pin MB
    • 1 x 16(12+4)pin PCIE 5.1 12V-2x6
    • 2 x 8(4+4)pin CPU
    • 4 x 8(6+2)pin PCI-E
    • 6 x SATA
    • 2 x Molex
  • Warranty: 7 years
  • Product Dimensions: 10 x 12.5 x 6.4 cm
  • Product Weight: 1785g

WHAT'S IN THE BOX:

  • Antec SF850X SFX 4.1 ATX3.1 80 PLUS Gold Fully Modular Power Supply - Black x1

Why Antec?

Antec stands as a trusted brand synonymous with quality PC components. With a legacy of excellence, Antec power supplies deliver stable and efficient power, ensuring reliability and performance for your system. Choosing Antec means investing in a modular power supply engineered for durability and backed by a commitment to customer satisfaction in South Africa. The SF850X 850W power supply is no exception.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 15549691764

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4.8 ★★★★★
Based on 27 reviews
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Product Reviews
O
Verified Purchase
Orson La Rose
Alexandria, US
★★★★★ 5
Value for your money
Style: AVR-X2800H
I am loving the sound quality while listening to music as well as watching movies. I am running a 5.2.2 surround sound which is a step up from my sound bar and I am loving it. This receive has tons of features. Apart from the sound quality, I love the fact that I can set my power on volume and a volume limit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 25, 2025
J
Verified Purchase
Jeff
Bozeman, US
★★★★★ 4
More like a 7.1.2 not 7.2
Style: AVR-X2800H
Looks and feel brand new, set up is easy especially if you have used Denon before. I needed to upgrade my old system to get the 8k signal for a new TV i bought. The only issue I've had is its listed as 7.2, but its more of 7.1.2. You can connect 7 speakers and adjust each individually, you can connect 2 subs but they both receive a split signal and can not be individually adjusted in the receiver. A little misleading, but still a great system.
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Reviewed in the United States on January 3, 2026
R
Verified Purchase
ReesC
Grantham, US
★★★★★ 5
Worth the Money
Style: AVR-X2800H
I have had this item for a few weeks now. This is the first high-tech AVR I have purchased. I decided to retire my 25 year old Denon AVR 900. Still works awesome and is in perfect shape. Needed to upgrade to newer technology. Many will frown at this, but I initially sent back an Onkyo TX-RZ30. I just found that I did not feel comfortable with the technology, but it is an exceptional receiver. I decided to go with the Denon AVR-X2800H. I just feel more confident with the Denon layout and setup guide. I have not been dissapointed. I very reluctantly ordered a refurshed model. I can tell no different, even in the packaging. Looked totally brand new. I will say that I am still learning all of the setup, but so as for ease of general setup and assigning speakers it has been very user friendly. I was curious to see the sound difference with music between my 25 year old Denon and the new Denon 2800. I was not dissapointed. I have a smaller room for the AVR, so I am using Klipsch 600II, Klipsch 400C center speaker, Fluance Signature Series bookshelf speakers, and Polk OWM3 rear speakers. The receiver push all these speaker quite easily and efficiently. I would definatly recommend this Denon model. Can it last 25 years plus like my other Denon. Only time will tell.
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Reviewed in the United States on December 17, 2025
D
Verified Purchase
Dave G.
Phoenix, US
★★★★★ 5
Please Read for Troubleshooting Info
Style: AVR-X2800H
I purchased a refurbished device and at first it worked fine. Then it started having a lot of trouble on power up locking into my DirectTV cable signal. It kept powering up my Blu-ray player and accessing its menu, even though I had not selected it and there was no disc loaded. I became frustrated enough that I returned the device. Wish I hadn't as it was a nice home theater system. To make a long story short, I bought another brand of receiver (for more money) and continued to have the exact same problem. Finally, a Google search found a troubleshooting solution on reddit. Many reddit users suggested turning off the HDMI CEC control. This was easier said than done, as this HDMI CEC control setting was not found in the Denon receiver menus. It was found in the setup menu for the Blu-ray player. Once I found the proper setting and turned it off the receiver was no longer confused and trying to access the Blu-ray player upon power up. It locked in on the DirertTV signal and was rock solid. I wish I had learned this solution earlier and had kept this nice receiver. I'm so bummed.
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Reviewed in the United States on May 8, 2025
C
Verified Purchase
co2smoke
Omaha, US
★★★★★ 5
Good receiver.
Style: AVR-X2800H
Very powerful and good quality receiver for the price. Replacing my Yamaha after it got burned out. Pulling my BW speakers with no problem at all. Very pleased with the performance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025

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