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be quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus® vs CORSAIR RM750x Shift Fully Modular ATX Power

Updated August 2026 — be quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus® wins on noise level and efficiency, CORSAIR RM750x Shift Fully Modular ATX Power wins on warranty and modularity.

The be quiet! Dark Power 14 offers superior efficiency and features, making it ideal for high-end builds, while the CORSAIR RM750x Shift is a budget-friendly option with innovative design.

Why be quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus® is better

Efficiency

80 PLUS Titanium vs Gold

Cooling

Active and semi-passive modes

Wattage

Higher wattage at 1200W

Why CORSAIR RM750x Shift Fully Modular ATX Power is better

Price

Significantly cheaper at $79.99

Cable Management

Innovative side cable interface

Noise Level

Zero RPM mode for silent operation

Overall score

be quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus®
88
CORSAIR RM750x Shift Fully Modular ATX Power
75

Specifications

Specbe quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus®CORSAIR RM750x Shift Fully Modular ATX Power
Certification80 PLUS Titanium80 PLUS Gold
ModularityFully ModularFully Modular
Cooling TypeActive/Semi-PassiveZero RPM
Connector Type12V-2x6Micro-Fit
Fan TypeSilent WingsFluid Dynamic

Dimension comparison

be quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus®CORSAIR RM750x Shift Fully Modular ATX Power

Price Comparison

When it comes to price, the be quiet! Dark Power 14 1200W is significantly more expensive than the CORSAIR RM750x Shift. The Dark Power 14 is priced at $289.90, while the RM750x Shift retails for $79.99, making the latter about 73% cheaper. This considerable price gap may be a crucial factor for those on a budget or looking for a more cost-effective power supply option. However, the higher price of the Dark Power 14 reflects its premium features and higher wattage, which could justify the investment for high-end builds.

Efficiency Ratings

The efficiency ratings of these power supplies differ notably. The be quiet! Dark Power 14 holds an impressive 80 PLUS Titanium certification, boasting an energy efficiency rating of up to 95.42%. In contrast, the CORSAIR RM750x Shift is certified with 80 PLUS Gold, which is still respectable but lower than Titanium. This difference in efficiency can impact both power consumption and cooling performance. Users seeking the utmost efficiency for their high-performance systems may prefer the Dark Power 14, while those with moderate needs might find the RM750x Shift sufficient.

Cooling Features

Cooling capabilities are essential for maintaining optimal performance in a power supply. The Dark Power 14 offers a unique cooling system with both active and semi-passive modes. This allows the user to switch between continuous fan operation or a mode where the fan only activates under heavy loads. Additionally, it features a post-ventilation setting that keeps the fan running briefly after shutdown to prevent overheating. The RM750x Shift, meanwhile, employs a 140mm fluid dynamic bearing fan designed for high performance and low noise, with a Zero RPM mode that ensures silent operation at lower loads. While both units prioritize quiet operation, the Dark Power 14 offers greater versatility in cooling management.

Modular Design

Both the be quiet! Dark Power 14 and CORSAIR RM750x Shift feature fully modular designs, allowing users to connect only the cables they need. However, the RM750x Shift introduces an innovative side cable interface, making cable management simpler and more accessible. This design can facilitate cleaner builds and easier upgrades compared to traditional top or rear cable connections. The Dark Power 14 also supports modular connections but does not emphasize accessibility to the same extent. For those who prioritize neat cable management, the RM750x Shift may have an edge.

Compatibility

In terms of compatibility, both power supplies support the latest technology. The be quiet! Dark Power 14 is ATX 3.1 compliant and includes native integration for the newest PCIe 5.1 graphics cards, making it an excellent choice for future-proofing high-end systems. The RM750x Shift is also ATX 3.1 certified and supports PCIe Gen 5.1, ensuring it can handle the latest components. While both units are well-equipped for modern builds, the Dark Power 14's additional connectors and higher wattage make it more adaptable for extreme configurations, especially for overclocking enthusiasts.

Build Quality

Build quality is an important aspect to consider when investing in a power supply. The be quiet! Dark Power 14 utilizes high-quality components, including a large heat sink and a fan designed to minimize vibrations, contributing to its long lifespan and robust performance. It features 12V-2x6 connectors for modern GPUs, ensuring it can support high-demand systems effectively. The RM750x Shift also boasts premium internal components, including 100% 105°C-rated Japanese electrolytic capacitors, which enhance its reliability and power delivery. Both units are built to last, but the Dark Power 14's focus on high-end materials may appeal to those seeking top-tier durability.

User Experience

User experience can greatly influence the decision-making process. The be quiet! Dark Power 14 is designed for enthusiasts, offering multiple modes for cooling and overclocking control, giving users a hands-on approach to performance management. Its quiet operation and heat management features contribute to a positive user experience, especially in high-performance builds. Conversely, the RM750x Shift focuses on ease of use with its side cable connections, making installation and maintenance less cumbersome. Its Zero RPM fan mode ensures a silent experience during low loads, catering to users who prioritize a quiet system. Each unit offers unique advantages depending on user preferences.

Which should you buy?

Choosing between the be quiet! Dark Power 14 1200W and the CORSAIR RM750x Shift largely depends on your needs and budget. If you require a high-capacity power supply with superior efficiency and versatile cooling options, the Dark Power 14 is worth the investment at $289.90. However, for those looking for a budget-friendly option without compromising on quality, the RM750x Shift at $79.99 offers excellent performance and innovative design features. Ultimately, your decision should align with your specific requirements, whether that be high performance or cost-effectiveness.