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CORSAIR HX1500i vs Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su

Updated August 2026The CORSAIR HX1500i offers superior features and power capacity, making it ideal for high-performance builds, while the Gigabyte UD850GM PG5 ICE provides excellent value for budget-conscious users.

The CORSAIR HX1500i offers superior features and power capacity, making it ideal for high-performance builds, while the Gigabyte UD850GM PG5 ICE provides excellent value for budget-conscious users.

Why CORSAIR HX1500i is better

higher wattage

CORSAIR offers 1500W compared to Gigabyte's 850W

software control

CORSAIR includes iCUE software for customization

quieter operation

CORSAIR features a Zero RPM Fan Mode for silent performance

Why Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su is better

lower price

Gigabyte is priced at £99.61

compact size

Gigabyte has a more compact design

premium components

Gigabyte uses 100% Japanese capacitors

Overall score

CORSAIR HX1500i
85
Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su
70

Specifications

SpecCORSAIR HX1500iGigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su
BrandCorsairGigabyte
Certification80 PLUS Gold80 PLUS Gold
Fan TypeFDBHYB
ProtectionOCPOVP/OPP/SCP/UVP/OCP/OTP
CablingFully ModularFully Modular

Dimension comparison

CORSAIR HX1500iGigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su

Price Comparison

The CORSAIR HX1500i is significantly more expensive than the Gigabyte UD850GM PG5 ICE, priced at £229.00 compared to £99.61. This difference of £129.39 might lead potential buyers to consider the value each power supply offers for its price. While the CORSAIR model is geared towards high-performance setups with features that support advanced hardware, the Gigabyte model provides essential functionality at a more accessible price point. The substantial cost difference raises questions about which features justify the higher price and whether the additional investment in the CORSAIR is warranted for average users or even enthusiasts.

Build Quality and Design

When it comes to build quality and design, both power supplies feature a fully modular design, allowing users to connect only the cables they need for a cleaner setup. The CORSAIR HX1500i boasts a 140mm Fluid Dynamic Bearing fan, designed for quiet operation and longevity, while the Gigabyte UD850GM PG5 ICE has a 120mm smart hydraulic bearing fan. The use of high-quality components is evident in both models; however, the Gigabyte’s inclusion of 100% Japanese capacitors speaks to its reliability and durability. Thus, while both power supplies are well-constructed, the choice may depend on whether you prioritise quiet performance or the assurance of premium components.

Power Delivery and Efficiency

In terms of power delivery, the CORSAIR HX1500i supports the ATX 3.1 power standard and is designed to manage transient power spikes effectively, which is crucial for high-demand systems. Conversely, the Gigabyte UD850GM PG5 ICE is also certified for Intel ATX 3.1 and PCIe Gen 5.1, making it suitable for modern GPUs and CPUs. Both models carry an 80 PLUS Gold certification, ensuring efficient operation, but the CORSAIR's higher wattage of 1500W compared to the Gigabyte's 850W could be a determining factor for users requiring more power. This makes the CORSAIR a better choice for extremely high-performance builds that demand maximum wattage.

Cooling Solutions

The cooling solutions of both power supplies reflect their design ethos. The CORSAIR HX1500i’s 140mm Fluid Dynamic Bearing fan is engineered for low noise and longevity, operating in a Zero RPM Fan Mode at lower loads for completely silent performance. In contrast, the Gigabyte UD850GM PG5 ICE uses a 120mm smart hydraulic bearing fan, which is also efficient, but may not offer the same level of quiet operation under low load conditions. Users sensitive to noise might find the CORSAIR’s cooling system more appealing, especially in quiet environments or when building a system designed for minimal sound output.

Software Features

Software integration sets the CORSAIR HX1500i apart with its powerful CORSAIR iCUE software. This allows users to create custom fan curves, monitor power settings, and switch between single and multi-rail overcurrent protection on-the-fly. This level of control can be particularly beneficial for enthusiasts who want to optimise their system’s performance actively. The Gigabyte UD850GM PG5 ICE lacks similar software features, focusing instead on robust hardware protections such as OVP, OPP, SCP, UVP, OCP, and OTP. While the Gigabyte offers essential protection mechanisms, the absence of software control can be a drawback for those who prefer fine-tuning their power supply’s performance.

Compatibility

Both power supplies are designed to be compatible with the latest hardware standards. The CORSAIR HX1500i fully supports PCIe Gen 5, making it suitable for high-end graphics cards that demand significant power. The Gigabyte UD850GM PG5 ICE also supports PCIe Gen 5.1 and is designed to work seamlessly with modern components. However, the higher wattage of the CORSAIR makes it more future-proof for users who might upgrade to more power-hungry components down the line. Therefore, for users planning to build or upgrade a system with top-tier hardware, the CORSAIR may be the more sensible choice.

Safety and Protection Features

Safety and protection features are critical when selecting a power supply, and both models offer a solid array of protections. The CORSAIR HX1500i includes features such as overcurrent protection (OCP), while the Gigabyte UD850GM PG5 ICE provides a more comprehensive suite including overvoltage protection (OVP), over power protection (OPP), short circuit protection (SCP), under voltage protection (UVP), overcurrent protection (OCP), and over temperature protection (OTP). This wide range of safety features in the Gigabyte unit provides peace of mind for users, ensuring their components are adequately protected against potential electrical issues.

Which should you buy?

Deciding between the CORSAIR HX1500i and the Gigabyte UD850GM PG5 ICE ultimately comes down to your specific needs and budget. If you require a high-wattage power supply with advanced features, such as software control and support for the latest hardware, the CORSAIR may be worth the investment at £229.00. However, if you are seeking a reliable, efficient power supply that covers all the essentials without breaking the bank, the Gigabyte at £99.61 presents an excellent value proposition. For most users, especially those with moderate power needs, the Gigabyte is likely the smarter choice, while the CORSAIR is ideal for those building high-performance systems.

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CORSAIR HX1500i vs Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su | versusfinder