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be quiet! Pure Power 13 M 1000W Power Supply, 80 vs Corsair HX1000i Fully Modular Ultra-Low Noise ATX

Updated August 2026 — be quiet! Pure Power 13 M 1000W Power Supply, 80 wins on efficiency, Corsair HX1000i Fully Modular Ultra-Low Noise ATX wins on modularity and cooling.

The be quiet! Pure Power 13 M offers great value for budget-conscious users, while the Corsair HX1000i excels in efficiency and advanced features.

Why be quiet! Pure Power 13 M 1000W Power Supply, 80 is better

Price

be quiet! is significantly cheaper at $139.90

Cooling

semi-passive cooling for quiet operation under low loads

Future-proofing

supports PCIe 5.1 GPUs with native connectors

Why Corsair HX1000i Fully Modular Ultra-Low Noise ATX is better

Efficiency

Corsair has 80 Plus Platinum rating

Noise

ultra-low noise with Fluid Dynamic Bearing fan

Modularity

fully modular cabling for easier builds

Overall score

be quiet! Pure Power 13 M 1000W Power Supply, 80
75
Corsair HX1000i Fully Modular Ultra-Low Noise ATX
85

Specifications

Specbe quiet! Pure Power 13 M 1000W Power Supply, 80Corsair HX1000i Fully Modular Ultra-Low Noise ATX
Certification80 Plus Gold80 Plus Platinum
ModularitySemi-ModularFully Modular
Fan Type120mm140mm Fluid Dynamic
Power Output1000W1000W
Connector SupportPCIe 5.1PCIe 5.1

Dimension comparison

be quiet! Pure Power 13 M 1000W Power Supply, 80Corsair HX1000i Fully Modular Ultra-Low Noise ATX

Price Comparison

The be quiet! Pure Power 13 M 1000W Power Supply is priced at $139.90, making it about 40% cheaper than the Corsair HX1000i, which retails for $234.99. This significant price difference may appeal to budget-conscious consumers looking for a reliable power supply without breaking the bank. While both products offer high-quality features, the be quiet! option stands out for its value, especially for those who do not require the more advanced features of the Corsair model.

Efficiency Ratings

In terms of efficiency, the Corsair HX1000i boasts an impressive 80 Plus Platinum rating, which translates to higher efficiency than the be quiet! Pure Power 13 M, which is rated at 80 Plus Gold. This means that the Corsair power supply can achieve efficiency ratings of up to 94% compared to the 94.4% for the be quiet! model. However, the higher efficiency of the Corsair may yield lower energy costs over time, making it a better investment for users who prioritize power savings in their systems.

Noise Levels

When it comes to noise levels, both power supplies feature quiet operation modes, but the Corsair HX1000i is designed for ultra-low noise with its 140mm Fluid Dynamic Bearing fan. The be quiet! Pure Power 13 M also emphasizes quiet operation with its semi-passive cooling system, where the fan turns off completely under low load. This results in exceptionally silent performance, especially in gaming and media creation setups. While both are engineered for quietness, the Corsair may have a slight edge in long-term noise reduction during active operation.

Modular Cabling

The Corsair HX1000i features fully modular cabling, which allows users to connect only the cables they need. This makes for clean and tidy builds and simplifies cable management. In contrast, the be quiet! Pure Power 13 M also offers modular cables but does not specify the same level of flexibility as the Corsair. For users who prioritize aesthetics and ease of installation, the modularity of the Corsair may be a significant advantage in crafting a visually appealing and organized system.

Cooling Systems

Both models offer innovative cooling solutions suited for different user needs. The Corsair HX1000i incorporates a Fluid Dynamic Bearing fan, which is designed for long-lasting performance and near-silent operation. On the other hand, the be quiet! Pure Power 13 M employs a semi-passive cooling approach, where the fan remains off under low loads, ensuring quiet operation. Users who expect their systems to handle minimal loads frequently may benefit from the silent mode of the be quiet! unit, while those who utilize heavy loads may prefer the reliability of the Corsair's fan design.

Compatibility and Future-Proofing

The be quiet! Pure Power 13 M includes native integration of the 12V-2x6 connector for next-generation PCIe 5.1 graphics cards, making it a versatile choice for future upgrades. It also supports four PCIe 6+2-pin connectors for current-generation GPUs. The Corsair HX1000i is similarly ATX 3.1 certified and also supports PCIe 5.1 platforms, ensuring compatibility with the latest components. Both units are future-proof, but the be quiet! model may appeal to those looking specifically for extensive support for both current and upcoming GPUs.

Build Quality and Reliability

The build quality of both power supplies is excellent, with each brand known for its reliability. The Corsair HX1000i uses Japanese 105°C-rated electrolytic capacitors, which are designed for long life and performance stability, backed by a ten-year warranty. The be quiet! Pure Power 13 M employs LLC technology for voltage regulation, enhancing stability and efficiency. While both options promise durability, the lengthy warranty of the Corsair may offer additional peace of mind for consumers prioritizing long-term reliability.

Which should you buy?

If you're looking for a power supply that offers high performance at a lower price, the be quiet! Pure Power 13 M 1000W Power Supply is an excellent choice, costing $139.90. However, if you prioritize efficiency, ultra-low noise, and advanced features like fully modular cabling and comprehensive software control, the Corsair HX1000i, priced at $234.99, may be worth the investment. Ultimately, your choice should hinge on your specific needs—budget, performance, and future-proofing capabilities will guide you to the best option for your system.