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Corsair HX1000i Fully Modular Ultra-Low Noise ATX vs Thermaltake Toughpower SFX 750W 80Plus Platinum

Updated August 2026 — Corsair HX1000i Fully Modular Ultra-Low Noise ATX leads on noise level and cooling.

The Corsair HX1000i offers superior features and performance, making it the better choice for high-end builds. However, the Thermaltake Toughpower SFX is a solid budget option.

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

Noise Level

Zero RPM Fan Mode for silent operation

Warranty

Ten-year warranty versus seven years

Software

Advanced CORSAIR iCUE software for monitoring

Why Thermaltake Toughpower SFX 750W 80Plus Platinum is better

Price

More budget-friendly at $139.99

Size

Compact SFX form factor

Efficiency

80 PLUS Platinum certified

Overall score

Corsair HX1000i Fully Modular Ultra-Low Noise ATX
88
Thermaltake Toughpower SFX 750W 80Plus Platinum
76

Specifications

SpecCorsair HX1000i Fully Modular Ultra-Low Noise ATXThermaltake Toughpower SFX 750W 80Plus Platinum
Efficiency80 PLUS Platinum80 PLUS Platinum
ModularityFully ModularFully Modular
Fan TypeFDBFDB
Warranty10 Years7 Years
Power Output1000W750W

Dimension comparison

Corsair HX1000i Fully Modular Ultra-Low Noise ATXThermaltake Toughpower SFX 750W 80Plus Platinum

Overview of Power Supplies

When choosing a power supply for your PC, both the Corsair HX1000i and the Thermaltake Toughpower SFX 750W are excellent options. The Corsair HX1000i is priced at $234.99, whereas the Thermaltake Toughpower SFX is more budget-friendly at $139.99, making it about 17% cheaper. Each power supply has its unique features and capabilities tailored to different user needs, making a comparison essential for prospective buyers.

Build Quality and Design

The Corsair HX1000i boasts a fully modular design that allows users to connect only the cables necessary for their specific system, promoting a tidy build. Its 140mm Fluid Dynamic Bearing fan is designed for ultra-low noise operation. On the other hand, the Thermaltake Toughpower SFX is also fully modular but comes with low-profile cables that cater to smaller builds. It features a 90mm FDB fan, slightly smaller than Corsair's, which still provides efficient cooling. Both units are designed with durability in mind, but Corsair offers a ten-year warranty compared to Thermaltake's seven-year warranty.

Performance and Efficiency

The Corsair HX1000i delivers exceptional 80 PLUS Platinum efficiency, which ensures that it runs efficiently while keeping power consumption low. It is compliant with the ATX 3.1 power standard and supports PCIe Gen 5.1, making it suitable for high-performance setups. The Toughpower SFX also achieves 80 PLUS Platinum certification and is designed to meet the latest Intel SFX 12V 4.1 and ATX 12V 3.1 standards, ensuring reliable performance. Both power supplies are well-equipped to handle next-gen hardware, but the HX1000i offers slightly superior power delivery options.

Noise Levels

When it comes to noise levels, the Corsair HX1000i stands out with its Zero RPM Fan Mode, where the fan is completely off during low and medium loads, resulting in near-silent operation. The 140mm fan design also contributes to quieter performance. The Thermaltake Toughpower SFX provides a quieter experience as well, but its 90mm fan may not be as effective as the Corsair’s larger fan in maintaining lower noise levels. For users prioritizing silence, the HXi series may be the better choice.

Compatibility and Connectivity

The Corsair HX1000i is built with a focus on versatility, featuring multiple connections suitable for modern graphics cards and components, thanks to its compliance with PCIe Gen 5.1. It also offers a powerful software suite via CORSAIR iCUE, allowing users to monitor power settings and customize fan curves on-the-fly. The Toughpower SFX is also PCIe Gen 5.1 ready and includes a 300W 12V-2x6 connector, making it compatible with high-performance graphics cards. However, the Corsair's software advantages provide an edge in customizability and monitoring.

Warranty and Support

Warranty is an important factor when investing in a power supply. The Corsair HX1000i comes with a ten-year warranty, reflecting the brand's confidence in its build quality and longevity. The Thermaltake Toughpower SFX, while still well-supported, has a seven-year warranty. This difference could sway buyers who are concerned about long-term reliability and support, as a longer warranty often indicates a manufacturer’s trust in their product's durability.

Price Comparison

The price difference between these two power supplies is significant. The Corsair HX1000i is priced at $234.99, while the Thermaltake Toughpower SFX is available for $139.99. This places the Corsair unit at approximately $95 more than the Thermaltake, which could be a decisive factor for budget-conscious consumers. However, the additional features and capabilities of the HX1000i may justify the higher price for users looking for top-tier performance.

Which should you buy?

Ultimately, the decision between the Corsair HX1000i and the Thermaltake Toughpower SFX comes down to your specific needs and budget. If you prioritize low noise levels, extensive software support, and a longer warranty, the Corsair HX1000i is worth the investment. Conversely, if you are looking for a more budget-friendly option that still offers high efficiency and solid build quality, the Thermaltake Toughpower SFX is an excellent choice. Each power supply has its strengths, so weigh these factors carefully to make the best decision for your build.