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be quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus® vs CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX

Updated August 2026 — be quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus® leads on modularity and efficiency.

The be quiet! Dark Power 14 1200W is a premium power supply with advanced features, while the CORSAIR CX550 is a budget-friendly option. For high-performance needs, the Dark Power 14 is the clear choice.

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

Efficiency

Dark Power 14 has 80 PLUS Titanium certification.

Cooling

Dark Power 14 features a dual-mode cooling system.

Modularity

Dark Power 14 is fully modular.

Why CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX is better

Price

CX550 is significantly cheaper.

Compact Size

CX550 has a smaller form factor.

Warranty

CX550 comes with a three-year warranty.

Overall score

be quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus®
95
CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX
70

Specifications

Specbe quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus®CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX
Certification80 PLUS Titanium80 PLUS Bronze
Cooling TypeActive/Semi-PassiveThermally Controlled
ModularityFully ModularNon-Modular
Fan SizeSilent Wings120mm
CompatibilityPCIe 5.1Limited

Dimension comparison

be quiet! Dark Power 14 1200W, ATX 3.1, 80 Plus®CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX

Overview

When comparing the be quiet! Dark Power 14 1200W and the CORSAIR CX550 80 Plus Bronze, it’s clear that these two power supplies cater to different market segments. The be quiet! Dark Power 14 is a high-end unit designed for demanding systems, while the CORSAIR CX550 is a budget-friendly option for entry to mid-range builds. With price differences of over $223, which power supply suits your needs?

Price Comparison

The be quiet! Dark Power 14 1200W is priced at $289.90, making it a significant investment compared to the CORSAIR CX550, which retails at $65.99. This means the Dark Power 14 is approximately 339% more expensive than the CX550. The price difference reflects the advanced features and higher wattage of the Dark Power 14, which is designed for high-performance systems, while the CX550 is aimed at users with more modest power requirements.

Efficiency Ratings

Efficiency is a crucial factor for power supplies, and here the Dark Power 14 shines with an 80 PLUS Titanium certification, boasting an efficiency rating of up to 95.42%. In contrast, the CORSAIR CX550 is rated 80 PLUS Bronze, offering up to 88% efficiency. This difference means the Dark Power 14 not only consumes less power but also generates less heat, which can lead to a quieter operation over time. If energy efficiency is a priority for you, the Dark Power 14 is the clear winner.

Cooling Systems

Cooling performance varies significantly between these two models. The be quiet! Dark Power 14 features a dual-mode cooling system with a Silent Wings fan that can operate in either active or semi-passive mode, allowing for quieter performance under low loads. Furthermore, its integrated heat sink helps dissipate heat effectively, making it suitable for overclocking. On the other hand, the CORSAIR CX550 uses a thermally controlled 120mm fan that only ramps up under heavy load. While both power supplies offer low-noise operation, the Dark Power 14 provides more control and efficiency in cooling.

Modularity

Modularity is another area where these two power supplies differ significantly. The be quiet! Dark Power 14 is fully modular, allowing users to connect only the cables they need, which can improve airflow and reduce cable clutter within the case. In contrast, the CORSAIR CX550 is non-modular, meaning all cables are permanently attached. This could lead to a messier setup if you’re not using all the cables provided. If customization and neatness are important to you, the Dark Power 14 is the preferable choice.

Compatibility with Modern Components

The be quiet! Dark Power 14 is designed with the future in mind, featuring native support for PCIe 5.1 graphics cards with its two 12V-2x6 connectors, along with compatibility with PCIe 4.0 and 5.0 graphics cards through its 6+2-pin connectors. This makes it an excellent choice for gamers and professionals looking to use the latest GPUs. In contrast, the CORSAIR CX550, while capable, is limited to delivering 550 watts, which might restrict options for high-performance components. Users planning to build or upgrade to a high-end system should consider the Dark Power 14 for its superior compatibility.

Build Quality and Longevity

In terms of build quality, the be quiet! Dark Power 14 is constructed with high-end components, including a high-efficiency fan with fluid-dynamic bearings that contribute to a longer lifespan and quieter operation. The use of premium materials ensures that it can handle overclocking and high loads without overheating. Conversely, the CORSAIR CX550, while reliable, may not match the longevity and performance under stress as seen in the Dark Power 14. For users who prioritize durability and performance, the Dark Power 14 stands out.

Brand Reputation and Warranty

Both brands are recognized in the PC power supply market, but they cater to different audiences. be quiet! is known for its focus on silent computing, while Corsair has a broader product range appealing to various user needs. The Dark Power 14 does not specify a warranty period in the provided data, while the CORSAIR CX550 comes with a three-year warranty, providing peace of mind for budget-conscious buyers. If brand reliability and warranty assurance matter to you, the CX550 offers a solid guarantee, though the Dark Power 14 is also backed by a reputable name in silent computing.

Which should you buy?

Ultimately, the choice between the be quiet! Dark Power 14 1200W and the CORSAIR CX550 80 Plus Bronze hinges on your specific needs. If you are building a high-performance system with advanced graphics requirements and seek superior efficiency, cooling, and modularity, the Dark Power 14 is worth the investment. However, if you are on a budget and require a reliable power supply for a standard setup, the CORSAIR CX550 provides excellent value at approximately $65.99. Consider your performance requirements and budget before making a decision.