1. Computer Power Supplies Parts
  2. sku: 9991127207668623
  3. COOLMAX NW-550B

COOLMAX NW-550B Desktop Power Supply 550W

Nw-550b Coolmax Desktop Computer Power Supply 550w Tested

( Brand: Coolmax ), ( Manufacturer Part Number: NW-550B ), ( Model: COOLMAX NW-550B ), ( Connectors: 20 4 Pin ), ( Form Factor: Atx ), ( Type: Power Supply ), ( Unit Type: Unit ), ( Cooling: 1 Fan ), ( Maximum Power: 550 W ), ( Color: Black )

Review COOLMAX Desktop Computer Power Supply 550w Tested

The Coolmax NW-550B Desktop Power Supply is a reliable and efficient solution for powering your computer system, delivering a continuous power output of 550 watts. This power supply unit (PSU) is designed with advanced technology to ensure stable and clean power delivery to your components, preventing potential system instability or damage.

The NW-550B features a high-performance 120mm double ball fan, which ensures quiet operation even under heavy load. The fan's double ball bearing design reduces vibration and ensures long-lasting performance. The fan also has a variable speed control function, which adjusts fan speed based on the load, providing optimal cooling efficiency and minimizing noise.

This power supply is built with high-quality components, including Japanese capacitors, which offer superior performance and longer lifespan compared to standard capacitors. The NW-550B also supports active PFC (Power Factor Correction), which ensures efficient power delivery and reduces power consumption, resulting in lower electricity bills and a reduced carbon footprint.

The Coolmax NW-550B Desktop Power Supply offers multiple output connectors, including 24-pin ATX, 4 4-pin EPS12V, and various PCIe, SATA, and peripheral connectors. This ensures that it can support a wide range of computer configurations, from entry-level systems to high-performance gaming rigs.

The power supply's modular design allows users to only connect the cables they need, reducing clutter and improving airflow within the case. The NW-550B also features a protective design with over-current, over-voltage, and short-circuit protection, ensuring the safety of your components.

In summary, the Coolmax NW-550B Desktop Power Supply is a high-performance, reliable, and efficient solution for powering your computer system. With advanced features like quiet operation, high-quality components, active PFC, and a modular design, this power supply is an excellent choice for any computer build.

The Coolmax NW-550B is a 550-watt desktop power supply unit (PSU). Here are some pros and cons that may help you decide if this PSU is a good fit for your computer build.

Pros:

1. Affordable: The Coolmax NW-550B is a budget-friendly option for a 550-watt PSU.

2. Modular Design: This PSU features a modular design, which allows users to only connect the cables they need, making the build process cleaner and easier.

3. Reliable: Coolmax is a reputable brand known for producing reliable power supplies.

4. Quiet Operation: The fan on this PSU operates quietly, allowing for a quieter computing experience.

5. Adequate Power: This PSU provides enough power to support most mid-range computer builds.

Cons:

1. Limited Efficiency: The Coolmax NW-550B has an 80 certification, which means it is not as energy efficient as some other PSUs on the market.

2. Lack of Over-Volting Capabilities: This PSU does not support over-volting, which may be a concern for some users who want to push their components to their limits.

3. Limited Warranty: Coolmax offers a limited warranty of only three years, which is shorter than some other brands.

In conclusion, the Coolmax NW-550B is a decent option for a budget-friendly, modular, and reliable 550-watt PSU. However, it may not offer the same level of efficiency, over-volting capabilities, or warranty length as some other PSUs on the market. Ultimately, the decision to buy this PSU depends on your specific computing needs, budget, and preferences.

If you prioritize a quiet, modular, and affordable PSU with adequate power, then the Coolmax NW-550B may be a good choice for you. However, if you require a more powerful, efficient, or feature-rich PSU, then you may want to consider other options.

Details:

Used but in working condition.

part #: nw550b price

  • $25.99

specifications powsuppy:

  • brand: Coolmax
  • mpn: Nw-550b
  • model: Coolmax Nw-550b
  • connectors: 20 4 Pin
  • form factor: Atx
  • type: Power Supply
  • unit type: Unit
  • cooling: 1 Fan
  • maximum power: 550 W
  • color: Black

seller powsuppy:

  • # reviews: 30
  • rating: 100.0%
  • city: Columbia, Maryland

offer powsuppy:

  • availability: In Stock
  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • best offers: True
  • started: November 15, 2025

payments powsuppy:

  • wallet: Paypal
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shipping powsuppy:

  • cost: $10.02
  • type: Calculated
  • transit: 5-13 Days
  • carrier: USPS
  • class: Standard
  • service: USPS Ground Advantage

general powsuppy:

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

returns powsuppy:

  • policy: No Returns
connectors: 20 4 pin, form factor: atx, type: power supply, unit type: unit, cooling: 1 fan, maximum power: 550 w,
category: computers > computers/tablets networking > computer components parts > power supplies, color: black, sku: 9991127207668623,

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1 offer $25.99 USD
  • Offer #1: $25.99 price + $12.13 shipping estimate = $38.12* total. Used but in working condition.+$12.13 shipping

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