EVGA 550-B3 Pin Atx Desktop Power Supply

( Brand: Evga ), ( Manufacturer Part Number: 550-B3 ), ( Type: Power Supply ), ( Maximum Power: 550 W ), ( Connectors: 24 Pin ), ( Compatible Brand: For Evga ), ( Unit Type: Unit ), ( Form Factor: Atx ), ( Cooling: 1 Fan ), ( California Prop 65 Warning: This Product Contains A Chemical Known To The State Of California To Cause Cancer. ), ( Item Height: 3.5 ), ( Machine Type: Desktop ), ( Connector: Psu ), ( Modular: Yes )

Review EVGA 550 Pin Atx Desktop Power Supply B3

The EVGA 550 B3 is a high-performance 550-watt Desktop Power Supply Unit (PSU) designed to deliver reliable and efficient power to your computer system. This 80 Bronze certified PSU adheres to the highest energy efficiency standards, ensuring minimal energy waste and reduced operating costs.

The unit features a single 12V rail design, delivering a consistent and robust power delivery to the components. The 24-pin ATX connector and a variety of modular cables cater to a wide range of systems, providing flexibility and ease of use.

The EVGA 550 B3 is built using 100% Japanese Capacitors, ensuring superior reliability and longevity. The unit also incorporates a number of protective features, such as Over Voltage Protection, Under Voltage Protection, Over Power Protection, and Short Circuit Protection, safeguarding your system from potential damage.

The quiet 130mm fan ensures cooling performance while maintaining a relatively low noise level. The fan utilizes fluid dynamic bearing technology, which provides long-lasting performance and minimal maintenance requirements.

The compact and sleek design of the EVGA 550 B3 allows it to easily fit into most standard ATX cases, making it a versatile and practical choice for a wide range of systems. Its robust construction and advanced features make it an excellent choice for gamers, professionals, and enthusiasts alike, who demand high-quality and dependable power for their PCs.

The EVGA 550 B3 (550W) 24-pin ATX Desktop Power Supply is a mid-range power supply unit (PSU) from EVGA, a reputable manufacturer known for its high-performance gaming components. Here are some pros and cons that can help you decide if this PSU is a good fit for your PC build.

1. Efficiency: With an 80 Bronze certification, this PSU offers decent energy efficiency, converting up to 82% of the input electricity into usable power under typical loads.

2. Reliability: EVGA is a well-established brand with a good reputation for producing reliable components.

3. Quiet operation: The EVGA 550 B3 comes with a fan control feature, ensuring quiet operation under normal loads.

4. Modular design: This PSU features a modular design, allowing you to only connect the cables you need, reducing clutter inside your case.

5. Overvoltage and overcurrent protection: The PSU comes with built-in protection against overvoltages and overcurrents, ensuring the safety of your components.

1. Limited overclocking potential: This PSU is not designed for extreme overclocking, as it only offers a single 12V rail.

2. Limited connectors: While it offers a good selection of connectors for most modern components, it may not support the latest multi-GPU configurations or high-end liquid cooling systems.

3. Not fully modular: Although it has a modular design, not all cables are detachable, which could lead to more cable clutter in your case.

The EVGA 550 B3 is a solid choice for a mid-range power supply, offering decent efficiency, reliability, and quiet operation. Its modular design and built-in protection features add to its appeal. However, it may not be the best choice for power-hungry systems or extreme overclocking. Considering its pros and cons, I would recommend the EVGA 550 B3 for users looking for a reliable, mid-range power supply for their PC build.

Details:

If a part is not pictured, then it included in the sale. Tested for key functions, R2/Ready Resale. Shipping Information.

Testing Procedure: Test Results: Key Functions: Test: Expected Result: Provides power to the Computer Attempt boot machine with supply POST no warning codes Pass, Visually examined Power Supply for defects No found Pass. Only items pictured are included. This unit only comes with the cables shown. There may be signs of normal wear on these units that differ from the photos in listing.

Item has been tested and visually inspected for defects. Please see the listing pictures. Good condition.

part #: 550b3 prices

• $24.99-$66.28

specifications powsuppy:

• brand: Evga
• mpn: 550-b3
• type: Power Supply
• maximum power: 550 W
• connectors: 24 Pin
• compatible brand: For Evga
• unit type: Unit
• form factor: Atx
• cooling: 1 Fan
• california prop 65 warning: This Product Contains A Chemical Known To The State Of California To Cause Cancer.
• item height: 3.5
• machine type: Desktop
• connector: Psu
• modular: Yes

shipping powsuppy:

• cost: $0.00
• class: Standard, Expedited, One-day
• transit: 4-7 Days
• type: Calculated
• carrier: USPS, UPS
• service: USPS Ground Advantage, UPS Ground, USPS Priority Mail, UPS Next Day Air Saver

seller powsuppy:

• city: Indianapolis, Indiana
• # reviews: 104296
• rating: 99.8%

returns powsuppy:

• policy: Returns Accepted
• paid by: Seller
• method: Money back
• time: 30 Days

offer powsuppy:

• availability: In Stock
• started: April 30, 2026
• sold: 0
• options: Ship-to-home
• quantity: 1

payments powsuppy:

• wallet: Google-pay
• other
• credit card: Visa

general powsuppy:

• Computers/Tablet's Networking > Computer Components Parts > Power Supplies
• condition: Used

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