1. Computer Power Supplies Parts
  2. sku: 11735632372571891
  3. SEA SONIC X-660

SEA SONIC X-660 Pfc Modular Power Supply Seasonic SS-660KM F3 660W

Ss-660km Sea Sonic X-660 Seasonic Active Pfc F3 660w Modular Power Supply

( Brand: Sea Sonic ), ( Manufacturer Part Number: X-660 ), ( Model: SEASONIC X-660 ), ( Form Factor: Atx ), ( Type: Power Module ), ( Maximum Power: 660 W ), ( Cooling: 1 Fan ), ( Color: Gold ), ( Features: Modular )

Review SEA SONIC Seasonic Active Pfc F3 660w Modular Power Supply

The SeaSonic X-660 is a high-performance, 660-watt modular power supply from the renowned SeaSonic brand. This PSU (Power Supply Unit) is designed for PC builders and power users who demand superior reliability, efficiency, and quiet operation.

The X-660 is certified under the 80 Platinum standard, which guarantees an impressive power efficiency of up to 92% under typical load conditions. This translates to reduced energy waste, lower electricity bills, and a smaller carbon footprint. The PFC (Power Factor Correction) technology ensures that the X-660 operates at optimal power transfer efficiency, minimizing power loss and improving overall system performance.

This modular PSU features a compact design with a universal AC input, allowing it to be used worldwide. Its fully modular cabling system offers flexibility and ease of installation, as users can connect only the cables they need, reducing clutter and improving airflow within the case. The X-660 also comes with a set of flat, low-profile modular cables, making it an excellent choice for SFF (Small Form Factor) systems.

The SeaSonic X-660 employs a fanless design for operation below 40% load, ensuring completely silent operation under light loads. When the load exceeds 40%, the PSU's 135mm fan starts silently and efficiently keeps the components cool, maintaining stable and reliable performance.

The X-660 is built using high-quality components, including 105 C-rated solid capacitors, ensuring long-term reliability and stability. It also comes with a generous 12-year manufacturer's warranty, offering peace of mind to its users.

In summary, the SeaSonic X-660 is a high-efficiency, quiet, and reliable 660-watt modular power supply, perfect for powering modern PC systems or demanding workloads. With its fully modular design, 80 Platinum certification, and long warranty, it is an excellent investment for any PC enthusiast or power user.

The SeaSonic X-660 (SS-660KM PFC F3 660W) is a high-performance, fully modular power supply unit (PSU) from SeaSonic, a reputable manufacturer in the PC power supply market. Let's examine the pros and cons of this PSU to help you make an informed decision.

Pros:

1. High Efficiency: With an 80 Plus Platinum certification, this PSU delivers an impressive power efficiency of up to 92%. This translates to lower energy consumption and reduced heat generation.

2. Fully Modular Design: This feature allows users to connect only the cables they need, making cable management easier and improving airflow within the case.

3. Quiet Operation: The X-660 utilizes a fan control system that ensures quiet operation under normal loads, allowing for a more pleasant user experience.

4. High-Quality Components: SeaSonic uses top-tier components, ensuring reliable and stable power delivery to the system.

5. Protections and Safety Features: This PSU comes with various protections, such as overcurrent, overvoltage, undervoltage, and short-circuit protection, ensuring the safety of the components within your system.

Cons:

1. Price: The SeaSonic X-660 is more expensive than some other power supplies in its class. However, the high-quality components and advanced features justify the higher price for many users.

2. Size: While not excessively large, this PSU may be a bit larger than some other options in the same wattage range. This could be a concern for users with smaller cases.

In conclusion, the SeaSonic X-660 is a high-quality, efficient, and reliable power supply unit with advanced features that cater to the needs of enthusiasts and power users. Its fully modular design, quiet operation, and high-performance efficiency make it a strong recommendation for those who are looking for a premium power supply for their system. Despite its higher price point and slightly larger size, the pros outweigh the cons for this particular PSU.

Details:

Please understand that most items for sale in our store are preowned. Items Sold with Free Shipping the Only Applies to the Contiguous USA. SeaSonic SS-660KM Active PFC F3 660W Modular Power Supply X-660, Shows Some Signs of Use Otherwise Good Condition Please See Pictures.

specifications powsuppy:

  • brand: Sea Sonic
  • mpn: X-660
  • model: Seasonic X-660
  • form factor: Atx
  • type: Power Module
  • maximum power: 660 W
  • cooling: 1 Fan
  • color: Gold
  • features: Modular

payments powsuppy:

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

offer powsuppy:

  • availability: In Stock
  • quantity: 1
  • started: March 17, 2026
  • options: Ship-to-home
  • sold: 0
  • best offers: True

general powsuppy:

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

seller powsuppy:

  • city: Chattanooga, Tennessee
  • # reviews: 6643
  • rating: 99.2%

shipping powsuppy:

  • service: USPS Ground Advantage, UPS Ground, FedEx Ground / FedEx Home Delivery
  • type: Calculated
  • transit: 4-8 Days
  • class: Standard
  • cost: $0.00
  • carrier: USPS, UPS, FedEx

returns powsuppy:

  • time: 30 Days
  • paid by: Buyer
  • policy: Returns Accepted
  • method: Money back
form factor: atx, type: power module, maximum power: 660 w, cooling: 1 fan, features: modular,
category: computers > computers/tablets networking > computer components parts > power supplies, color: gold, sku: 11735632372571891,

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