Auotac 850W Fully Modular Power Supply, 80+ Gold vs Corsair HX1000i Fully Modular Ultra-Low Noise ATX
Updated August 2026 — Corsair HX1000i Fully Modular Ultra-Low Noise ATX leads on features and noise level.
The Auotac 850W offers great value for budget users, while the Corsair HX1000i excels in efficiency and features. Choose based on your priorities.
Why Auotac 850W Fully Modular Power Supply, 80+ Gold is better
Price
Auotac is significantly cheaper at $79.99.
Basic Features
Offers essential features for budget builds.
User Kit
Includes a tool kit for beginners.
Why Corsair HX1000i Fully Modular Ultra-Low Noise ATX is better
Efficiency
Corsair is 80 PLUS Platinum certified.
Noise Control
Features Zero RPM fan mode for silent operation.
Warranty
Corsair offers a ten-year warranty.
Overall score
Specifications
| Spec | Auotac 850W Fully Modular Power Supply, 80+ Gold | Corsair HX1000i Fully Modular Ultra-Low Noise ATX |
|---|---|---|
| Certification | 80 PLUS Gold | 80 PLUS Platinum |
| Fan Type | RGB Low-Noise | Fluid Dynamic Bearing |
| Modular | Fully Modular | Fully Modular |
| Software | None | CORSAIR iCUE |
| Capacitors | 105°C Japanese | 105°C Japanese |
Dimension comparison
Overview of Auotac 850W and Corsair HX1000i
The Auotac 850W Fully Modular Power Supply is priced at $79.99, making it significantly cheaper than the Corsair HX1000i, which costs $234.99. This price difference of about 66% highlights the stark contrast in the market positioning of these two power supplies. While both products boast modern features suitable for high-performance PCs, their pricing reflects different target audiences and specifications.
Power Efficiency
The Auotac 850W is 80 PLUS Gold certified, delivering up to 92% efficiency, which is commendable for its price point. In contrast, the Corsair HX1000i achieves an even higher standard with 80 PLUS Platinum efficiency, indicating its ability to operate at over 94% efficiency. This means that for every dollar spent on power, the Corsair model offers better performance, making it a more energy-efficient choice for users who prioritize lower energy costs over time.
Noise Levels
When it comes to noise levels, the Auotac 850W features a 140mm RGB low-noise smart fan, designed to operate quietly while effectively dissipating heat. However, the Corsair HX1000i takes this a step further with its 140mm Fluid Dynamic Bearing fan, which is specifically engineered for ultra-low noise performance. Additionally, the HX1000i includes a Zero RPM fan mode that completely turns off the fan at low and medium loads, making it the better choice for users who require a silent operation during less demanding tasks.
Build Quality and Reliability
Both power supplies boast high-quality components, but they cater to different reliability standards. The Auotac 850W uses 105°C Japanese capacitors, which are known for their durability and stability under load. On the other hand, the Corsair HX1000i also utilizes 105°C-rated electrolytic capacitors but positions itself with a more robust pedigree by offering a ten-year warranty. This extended warranty period underscores the Corsair's commitment to long-term reliability, making it an attractive option for users who plan to invest in their builds for the long haul.
Modular Design
The modular design of both power supplies allows for improved cable management and airflow within a PC case. The Auotac 850W features fully modular cables that help eliminate cable clutter, while the Corsair HX1000i also offers fully modular cabling, simplifying connections and enhancing aesthetics. Both designs are conducive to clean builds, but the Corsair's emphasis on ease of use and customization through the CORSAIR iCUE software provides an additional layer of convenience for tech-savvy users looking to optimize their systems further.
Compatibility and Standards
Both the Auotac 850W and Corsair HX1000i are compliant with the latest power standards, including ATX 3.1 and PCIe 5.1. The Auotac model supports these standards, ensuring stability and efficiency for modern high-performance components, especially graphics cards. The Corsair HX1000i shares this compatibility but also incorporates advanced features like transient power spike resistance, which may be particularly appealing for users with high-end GPUs that demand significant power under load.
User Experience and Additional Features
The Auotac 850W comes with a tool kit that includes a PSU tester and cable management accessories, making it user-friendly for beginners. This can be particularly beneficial for first-time builders or those who appreciate thorough documentation and support. Conversely, the Corsair HX1000i enhances the user experience with its powerful iCUE software, allowing users to create custom fan curves and monitor power settings in real-time. This digital integration provides a level of control and customization that tech enthusiasts may find invaluable.
Which should you buy?
Deciding between the Auotac 850W and Corsair HX1000i largely depends on your specific needs and budget. The Auotac 850W is an excellent choice for budget-conscious users seeking solid performance and essential features, priced at $79.99. In contrast, if you prioritize efficiency, quieter operation, and advanced software features, the Corsair HX1000i at $234.99 offers superior specifications and a longer warranty, justifying its higher price tag. Ultimately, your choice should align with your performance requirements, financial considerations, and long-term plans for your PC build.

