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Montech

MONTECH APX 550W-Non-Modular Power Supply-80 Plus White Certified-Intel ATX12V-DC-to-DC Converter Technology- Flat Cable Design to Enhance Thermal Efficiency-120mm Fan- 5-Year Warranty (APX 550W)

  • Based on 61 reviews
Condition: New
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$39.90 Why this price?
Holiday Deal · 33% off was $59.95

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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Dec 11
Order within 8 hours and 37 minutes
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Style: 550W


Features

  • DC-to-DC technology ensures optimal power efficiency and stable output across all components
  • 80 PLUS White certified power supply ensures high energy efficiency and minimizing heat generation
  • +12V rail performance provides power and reliability for high-demand systems
  • 120mm hydraulic bearing fan provides silent operation and efficient cooling system
  • Features six essential safety mechanisms providing system stability, over-voltage (OVP), under-voltage (UVP), over-current (OCP), over-power (OPP), short-circuit (SCP), and over-temperature protection (OTP)

Description

Unlike typical white-label power supplies, APX PSU breaks convention by incorporating advanced DC-to-DC technology alongside 80 PLUS White certification. This technology ensures stable and efficient power delivery to all components, while our 80 PLUS White certification guarantees at least 80% efficiency under typical loads. This not only reduces electricity costs but also significantly minimizes heat generation, making it the optimal choice for those prioritizing performance and environmental responsibility. APX PSU excels with dominant 12V rail performance, delivering precise power to meet the demands of high-performance systems. This feature enhances system reliability under the most demanding conditions, ensuring consistent performance whether for gaming or intensive workloads. Engineered for silent operation, our 120mm fan efficiently manages cooling while maintaining quiet performance. This ensures your PC runs smoothly without distracting noise, ideal for maintaining focus during tasks or immersive gaming sessions. Backed by a comprehensive 5-year warranty, APX PSU offers peace of mind with extensive coverage against defects and issues. Combined with enhanced system safety features—including Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), Over-Current Protection (OCP), Over-Power Protection (OPP), Short-Circuit Protection (SCP), and Over-Temperature Protection (OTP). This ensures your components are safeguarded, providing stable and secure operation across diverse operating conditions. Choose APX PSU for your next build or upgrade, and experience the perfect blend of cutting-edge technology, energy efficiency, reliability, and comprehensive protection for your investment.

Model Name: APX 550W


Brand: Montech


Compatible Devices: Personal Computer


Connector Type: ATX


Output Wattage: 550.0


Form Factor: ATX


Wattage: 550 watts


Cooling Method: Air


Item dimensions L x W x H: 5.91 x 5.51 x 3.39 inches


Item Weight: 1.79 Kilograms


Manufacturer: ‎Montech


Brand: ‎Montech


Model: ‎APX 550W


Item Weight: ‎3.93 pounds


Product Dimensions: ‎5.91 x 5.51 x 3.39 inches


Item model number: ‎APX 550W


Manufacturer Part Number: ‎APX 550W


Wattage: ‎550 watts


Date First Available: June 26, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Dec 11

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Works Great!
Style: 750W
750 Watts, inexpensive, works well. So far, so good.
Reviewed in the United States on November 10, 2025 by David L
    • Reliable
Style: 750W
I've been using this power supply for about a week, and so far no issues. The fan is basically silent and you wont be hearing this at all. It is a non modular PSU though so you're gonna want a space for cable management in your pc or it'll be a hassle. Overall, for its price, its perfect.
Reviewed in the United States on August 1, 2025 by Caroline Saldana
    • Budget king psu
Style: 550W
strong budget psu, hondles an i7 8700 and rtx 2070 well
Reviewed in the United States on November 12, 2025 by Henry
    • Great entry level power supply
Style: 550W
Best bang for your buck no frills power.
Reviewed in the United States on October 30, 2025 by Lacee Kirkland
    • Great price time will tell.
Style: 750W
So far no issues still havent installed it in my high end build still waiting to see how it does on a much less costly build first 750w for $40 is a steal especially if it wont blow ip my pc! 😁👍
Reviewed in the United States on October 7, 2025 by Karista Ray
    • Great and quiet
Style: 650W
This is a good power supply unlike thermalight it came dead on arrival tried plugging it in many outlets and nothing unlike this power supply it came with simple instructions and well
Reviewed in the United States on July 27, 2025 by Joshua Moctezuma
    • Not recommended, as it was DOA
Style: 650W
Sadly it was DOA when I received it and I had to return it for a refund. I bought this as it was recommend on YouTube due to it being on the C tier on the PSU list and for also being budget friendly. After struggling to figure out why my new gaming PC build wouldn't turn on, I ended up getting a different PSU (ARESGAME AGV Series 650W) for nearly the same price and it worked perfectly. I even used the "tester" device that came with the ARESGAME on this one and it proved that the MONTECH was definitely not working. So I personally cannot recommend this model if you're in need of a budget PSU and would suggest the ARESGAME AGV Series 650W instead. ... show more
Reviewed in the United States on October 21, 2025 by Sean M.
    • Reliable and quiet - Perfect power supply. and easy to install
Style: 650W
I purchased this power supply, it has exceeded my expectations. The installation was easy, It runs quietly and delivers stable power to my system without any other issues. Overall, a great quality for the price. Highly recommend.
Reviewed in the United States on March 6, 2025 by Rosanna

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