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NVVV MDR-20-12 AC to DC DIN-Rail Power Supply 12V 1.67 Amp 20W vs MSI MAG A750BN PCIE5

Updated August 2026The MSI MAG A750BN is the superior choice for high-performance needs, while the NVVV MDR-20-12 is more economical for basic applications.

The MSI MAG A750BN is the superior choice for high-performance needs, while the NVVV MDR-20-12 is more economical for basic applications.

Why NVVV MDR-20-12 AC to DC DIN-Rail Power Supply 12V 1.67 Amp 20W is better

lower price

C$21.41 vs C$84.64

compact design

suitable for smaller devices

basic functionality

ideal for low-power applications

Why MSI MAG A750BN PCIE5 is better

higher efficiency

80 PLUS Bronze certification

longer warranty

5-year limited warranty

greater power capacity

designed for high-performance systems

Overall score

NVVV MDR-20-12 AC to DC DIN-Rail Power Supply 12V 1.67 Amp 20W
55
MSI MAG A750BN PCIE5
85

Specifications

SpecNVVV MDR-20-12 AC to DC DIN-Rail Power Supply 12V 1.67 Amp 20WMSI MAG A750BN PCIE5
Output Voltage12VN/A
Output Current1.67AN/A
Max Power20W750W
Efficiency RatingN/A80 PLUS Bronze
WarrantyN/A5 years

Dimension comparison

NVVV MDR-20-12 AC to DC DIN-Rail Power Supply 12V 1.67 Amp 20WMSI MAG A750BN PCIE5

Overview of the NVVV MDR-20-12 and MSI MAG A750BN

The NVVV MDR-20-12 and MSI MAG A750BN are both power supplies aimed at different user needs and applications. The NVVV MDR-20-12 is priced at C$21.41, while the MSI MAG A750BN comes in at a significantly higher cost of C$84.64. This price difference indicates not only the different target markets but also the features and capabilities of each unit.

The NVVV MDR-20-12 is designed primarily for applications requiring a compact and efficient AC to DC conversion with an output of 12 volts at 1.67 amps, translating to a maximum output power of 20 watts. In contrast, the MSI MAG A750BN is tailored for high-performance computing, equipped with an 80 PLUS Bronze certification that ensures energy efficiency and reliability, alongside a robust 5-year limited warranty.

Power Output Comparison

When it comes to power output, the NVVV MDR-20-12 offers a maximum output of 20 watts, which is suitable for lower power applications, such as sensors or smaller electronic devices. Its output current of 1.67 amps allows it to deliver a stable 12 volts, making it a reliable choice for specific setups.

On the other hand, the MSI MAG A750BN provides a much higher capacity, as it is designed to support demanding hardware configurations. While the specific wattage output is not detailed in the provided data, being a PCIE5 unit typically means it can manage higher loads associated with gaming PCs and workstations. This makes the MSI MAG A750BN more suitable for users looking to power high-performance components.

Efficiency Ratings

Efficiency is a critical factor in power supplies, and here the MSI MAG A750BN shines with its 80 PLUS Bronze certification. This certification indicates that the power supply operates at a minimum of 82% efficiency under typical loads, which translates to less energy wasted as heat and lower electricity costs over time.

The NVVV MDR-20-12 does not have an efficiency rating mentioned, which may suggest it is not optimised for high-efficiency performance compared to its MSI counterpart. Users concerned about energy consumption and operational costs may find the MSI MAG A750BN to be a more favourable option.

Warranty and Reliability

Warranty is a key consideration when investing in a power supply, and the MSI MAG A750BN offers a 5-year limited warranty. This extended warranty period reflects MSI's confidence in the reliability of their product, providing peace of mind to users who may be concerned about the longevity and performance of their power supply.

In contrast, there is no warranty information provided for the NVVV MDR-20-12. Without a specified warranty, potential buyers might have reservations about the long-term reliability of this unit, making the MSI option more attractive for users prioritising dependability.

Use Cases and Applications

The NVVV MDR-20-12 is ideal for applications such as industrial control, automation systems, and smaller electronic devices that require consistent 12V power. Its compact design and straightforward AC to DC conversion capabilities make it suitable for environments where space and simplicity are priorities.

Conversely, the MSI MAG A750BN is clearly aimed at PC builders and gamers needing a robust power supply for their high-performance systems. Its compatibility with PCIE 5 suggests that it is ready for the latest graphics cards and other demanding components, making it a better choice for users focused on gaming or intensive computing tasks.

Build Quality and Design

Build quality can significantly influence a power supply’s performance and longevity. The MSI MAG A750BN is built to withstand the rigours of high-performance computing, backed by its rigorous testing and certification process associated with 80 PLUS certification. This emphasis on design and quality assurance is critical for users who require durability.

The NVVV MDR-20-12, while it serves its purpose well, lacks the same level of detail in its design and build quality description. Users looking for high-end components may find the MSI’s superior construction a deciding factor.

Price Consideration

The pricing difference between the NVVV MDR-20-12 at C$21.41 and the MSI MAG A750BN at C$84.64 is substantial and reflects the differences in capabilities and target markets. The NVVV is an economical choice for low-power applications, while the MSI is positioned as a more premium offering for gamers and enthusiasts who are willing to pay a higher price for better performance and reliability.

For budget-conscious users with simpler needs, the NVVV provides an attractive option. However, those looking for higher efficiency, better warranties, and the ability to power demanding components will find the MSI MAG A750BN worth the investment.

Which should you buy?

Choosing between the NVVV MDR-20-12 and the MSI MAG A750BN ultimately depends on your specific needs. If your requirements lean toward basic power supply functions for low-power devices, the NVVV MDR-20-12 presents a cost-effective solution. However, for users who demand reliability, efficiency, and the capability to support high-performance systems, the MSI MAG A750BN is the clear winner. Its higher price reflects its advanced features and long-term value, making it a worthy investment for serious users.

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NVVV MDR-20-12 AC to DC DIN-Rail Power Supply 12V 1.67 Amp 20W vs MSI MAG A750BN PCIE5 | versusfinder