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Corsair

CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX 550 Watt Power Supply - NA - Black

  • Based on 1,838 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Sep 23
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Style: Non Modular


Size: 550 Watts


Features

  • 80 PLUS Bronze Certified: Provides up to 88% operational efficiency, generating less heat and lowering your energy costs.
  • Full Continuous Power: CORSAIR CX Series power supplies are guaranteed to deliver their full rated wattage of continuous power.
  • Low-Noise Cooling: A 120mm thermally controlled low-noise cooling fan only spins at high speed when your power supply is under heavy stress, slowing down for quieter operation at lower loads.

Description

CORSAIR CX Series Power Supplies are 80 PLUS Bronze Certified, offering up to 88% operational efficiency for reduced heat and lower energy costs. Their full continuous power delivery guarantees consistent performance, while a 120mm thermally controlled low-noise cooling fan ensures quiet operation. Fitting easily into most modern PC cases with its compact 125mm length, the CX Series features black sleeved cables and a black powder-coated casing to fit your PC's style. Enjoy confidence in your purchase with a three-year warranty and the support of CORSAIR's global technical team, ensuring dependable power for your system.

Model Name: CX550


Brand: Corsair


Compatible Devices: Monitor


Connector Type: ATX


Output Wattage: 550


Form Factor: ATX


Wattage: 550 watts


Cooling Method: Air


Item dimensions L x W x H: 4.92 x 5.91 x 3.39 inches


Item Weight: 4.1 Pounds


Product Dimensions: 4.92 x 5.91 x 3.39 inches


Item Weight: 4.12 pounds


Manufacturer: Corsair


Item model number: CP-9020277-NA


Date First Available: October 14, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 23

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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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Reliable, Quiet, and Easy to Install
Style: Semi-Modular Size: 650 Watts
Very happy with its performance. The semi-modular design made cable management a breeze—only plug in what you need, which helps keep the case clean and airflow efficient. It runs very quietly, even under load, and has been rock solid in powering my system with no issues. Cable mangement looked nice when finished. The build quality feels premium, and it comes with all the necessary cables and clear instructions. I also appreciate the 80 Plus Bronze certification—perfect for mid-range builds or even higher-end setups that don’t need extreme wattage. Highly recommended for anyone looking for a dependable and affordable power supply! ... show more
Reviewed in the United States on August 6, 2025 by Jesus Loves Me
    • Super quiet, super awesome, stellar power delivery...
Style: Semi-Modular Size: 650 Watts
Replaced a 600W in a Lenovo Legion T5 where the mobo was lost. Easy install, quiet, and the power is spot on, zero discrepancies. If that changes, I'll update: I prefer 100% modular but having it modular outside of the primary power rails in an NZXT H9 Flow saved me some money; the case hid everything well, so going full modular wasn't necessary and I was able to invest in a fan hub and stay within budget. No vibrations, zero rail discrepancies, super quiet, and the modular use outside of the mobo requirements are nice. Value is spot on, connectivity on both ends is great, it looks awesome, the cable quality is better than a Raidmax I once tried (and the CoolerMaster it replaced), and managing even the stiffer primary cables was easy. I'm giving this thing 5-Stars outright due to the simple fact the power has zero issues. Perfection in that regard. Well done, Corsair; impressive. ... show more
Reviewed in the United States on August 8, 2025 by CajunDragon
    • Easy to install and works perfectly
Style: Non Modular Size: 750 Watts
Great price perfect for a scratch build easy to install and plenty of power
Reviewed in the United States on June 2, 2025 by Brandon Gutierrez
    • Amazing!
Style: Non Modular Size: 750 Watts
I'm one of those that uses pc's until they die. So currently I'm using an A88X-Plus motherboard with a 15yr old AMD A10-5600... Don't need to upgrade quite yet. Not a gamer or a streamer.. Turns out I was under powered for the longest time and trying to run that board and cpu on a 300w power supply when the motherboard manual clearly stated 300w is enough for standard operation without cards and extra drives.. Decided to buy this for a modern pc build as parts go on sale. I'll buy.. until then. I'm using this psu in my old dinosaur AMD system and for the first time it it's little life. It's getting the power it needs... have it funning in optimized and ultimate power settings and all my lags and glitches are gone! And this thing is dead silent. Cables are plenty long enough. only lacks more sata connectors. only has 3 on 1 cable.. so get extensions ... show more
Reviewed in the United States on December 4, 2024 by DonnieAwesome
    • Good mid range PSU
Style: Semi-Modular Size: 650 Watts
So far this PSU has been working great with my 2060 super. Got it to replace a cheap psu i origionally bought with my pc so this is a huge upgrade
Reviewed in the United States on July 15, 2025 by Larry
    • !Excellent source of power, good materials and power !!!!
Style: Non Modular Size: 750 Watts
Review Image by Eyleen Hauls Eyleen Hauls
The media could not be loaded. This power source is great for your PC, it can give you all the power you need and it is semi-modular, just the best thing for your PC.
Reviewed in the United States on June 24, 2025 by Eyleen Hauls Eyleen Hauls
    • Great unit for low end to mid pc builds
Style: Non Modular Size: 650 Watts
Nice working power supply, and with black sleeves instead of the ketchup and mustard ones. It runs quietly in the unit I put it in, as it should fit most cases as long it not a small format case. Only thing is it not modular unit so keep that end mind you might have to deal with cables your not using as far cable management. ... show more
Reviewed in the United States on July 12, 2025 by John Goheen
    • Great choice for the cost
Style: Semi-Modular Size: 650 Watts
Had this running in my system for about 8 months now, no issues, can fully recommend product.
Reviewed in the United States on July 16, 2025 by Jordan M Applegren

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