CORSAIR HX1500i vs NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa
Updated August 2026 — The CORSAIR HX1500i is a high-performance power supply ideal for demanding systems, while the NZXT C850 Gold offers a budget-friendly option for standard builds.
The CORSAIR HX1500i is a high-performance power supply ideal for demanding systems, while the NZXT C850 Gold offers a budget-friendly option for standard builds.
Why CORSAIR HX1500i is better
Higher wattage
1500 watts vs 850 watts
Advanced features
Includes CORSAIR iCUE software
Better cooling
Larger 140mm fan for improved airflow
Why NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa is better
Lower price
£84.90 vs £229.00
Compact design
850 watts sufficient for standard builds
Silent operation
Zero Fan Mode under 50% load
Overall score
Specifications
| Spec | CORSAIR HX1500i | NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa |
|---|---|---|
| Brand | Corsair | NZXT |
| Modular | Fully | Fully |
| Cooling Type | FDB Fan | FDB Fan |
| Zero RPM Mode | Yes | Yes |
| ATX Standard | 3.1 | 3.1 |
Dimension comparison
Price Comparison
The CORSAIR HX1500i is significantly more expensive than the NZXT C850 Gold, priced at £229.00 compared to £84.90. This marks a difference of £144.10. While the higher price of the CORSAIR may reflect its advanced features and higher wattage capacity, the NZXT offers a more budget-friendly option for gamers and PC builders. The choice between these two power supplies may depend on your specific needs and budget constraints.
Power Output
The CORSAIR HX1500i boasts a power output of 1500 watts, making it ideal for high-performance systems that demand substantial power. In contrast, the NZXT C850 Gold provides 850 watts, which is still a robust option for most gaming setups. The significant difference in wattage suggests that the CORSAIR is better suited for users with multiple high-end components, while the NZXT caters to those with more standard configurations.
Efficiency Standards
Both power supplies comply with the ATX 3.1 standard, ensuring stability and efficiency for modern PC components. The CORSAIR HX1500i's compliance means it can handle the latest PCIe Gen 5 platforms and resist transient power spikes effectively. The NZXT C850 Gold, while also ATX 3.1 certified, focuses on delivering stable power in a more compact wattage range. This adherence to the same efficiency standards indicates that both products are designed to meet contemporary gaming and computing demands reliably.
Cooling Systems
The cooling systems of both power supplies are designed for efficiency and quiet operation. The CORSAIR HX1500i features a 140mm Fluid Dynamic Bearing (FDB) fan that promises extremely quiet performance, while also including a Zero RPM Fan Mode to ensure silent operation at low and medium loads. The NZXT C850 Gold, on the other hand, sports a 135mm fluid dynamic bearing fan with a similar Zero Fan Mode, making it completely silent under 50% load. Both options prioritise noise reduction, but the larger fan in the CORSAIR may offer slightly better cooling performance under heavy loads.
Modular Cabling
Both the CORSAIR HX1500i and the NZXT C850 Gold are fully modular, allowing users to connect only the cables they need for a tidier build. This feature enhances cable management and airflow within the case, making for a cleaner and more efficient setup. The CORSAIR's modular design is further complemented by the powerful CORSAIR iCUE software, which allows users to create custom fan curves and monitor power settings. While the NZXT does not mention similar software capabilities, it still delivers a user-friendly experience with its modular approach.
Component Compatibility
The CORSAIR HX1500i is particularly well-suited for high-performance components, especially those requiring substantial power, such as the latest NVIDIA graphics cards. Its robust power delivery system ensures that even the most demanding setups can run smoothly. Conversely, the NZXT C850 Gold is designed with compatibility for the NVIDIA GeForce RTX 50 Series graphics cards in mind, providing stable power for those specific components. Users should consider their existing hardware when deciding which power supply will best meet their requirements.
Build Quality
Both power supplies boast high-quality construction, with the CORSAIR HX1500i and the NZXT C850 Gold utilising premium components. The CORSAIR emphasises its long-lasting performance and reliability, while the NZXT highlights the use of 100% premium Japanese capacitors, which improve hold-up time and reduce ripple noise. This focus on quality in both products suggests that users can expect dependable performance over time, making either choice a strong contender for a reliable power supply solution.
Which should you buy?
Ultimately, the choice between the CORSAIR HX1500i and the NZXT C850 Gold hinges on your specific needs and budget. If you require a high wattage power supply capable of supporting multiple high-end components, the CORSAIR is the superior option, albeit at a higher price of £229.00. However, if you're looking for a more economical choice that still meets modern standards and delivers efficient power for a standard gaming rig, the NZXT at £84.90 is an excellent value. Consider your power requirements, budget, and future upgrade plans when making your decision.
versusfinder.com is a participant in the Amazon Services LLC Associates Programme and the Amazon EU Associates Programme. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

