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CORSAIR RM850e vs Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su

Updated August 2026The CORSAIR RM850e offers a better price and solid performance, while the Gigabyte UD850GM PG5 ICE provides advanced safety features and potentially better thermal performance.

The CORSAIR RM850e offers a better price and solid performance, while the Gigabyte UD850GM PG5 ICE provides advanced safety features and potentially better thermal performance.

Why CORSAIR RM850e is better

price

CORSAIR RM850e is £13.62 cheaper

noise

CORSAIR RM850e has a quieter operation

capacitors

CORSAIR RM850e uses 105°C-rated capacitors

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

safety features

Gigabyte UD850GM PG5 ICE has extensive protection features

thermal performance

Gigabyte UD850GM PG5 ICE has a smart hydraulic bearing fan

brand reputation

Gigabyte is known for high-quality components

Overall score

CORSAIR RM850e
85
Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su
78

Specifications

SpecCORSAIR RM850eGigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su
Wattage850W850W
Certification80 PLUS Gold80 PLUS Gold
Fan Size120mm120mm
Capacitors105°C-rated100% Japanese
ModularFully ModularFully Modular

Dimension comparison

CORSAIR RM850eGigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su

Overview of the CORSAIR RM850e and Gigabyte UD850GM PG5 ICE

The CORSAIR RM850e and the Gigabyte UD850GM PG5 ICE are both high-quality 850W power supplies that cater to different needs and preferences in the gaming and PC building communities. The CORSAIR RM850e is priced at £85.99, while the Gigabyte UD850GM PG5 ICE comes in at £99.61. Despite their similar wattage, each unit offers unique features that could influence a buyer's decision.

Build Quality and Design

The build quality of both power supplies is commendable, with each featuring fully modular designs that enhance cable management and airflow. The CORSAIR RM850e utilises 105°C-rated capacitors, ensuring stable performance even under heavy loads. In contrast, the Gigabyte UD850GM PG5 ICE boasts 100% Japanese capacitors, which are known for their reliability and efficiency. This difference may appeal to users who prioritise component quality, as Japanese capacitors often enhance the longevity of the unit.

Efficiency Ratings

Efficiency is a crucial factor when selecting a power supply, and both the CORSAIR RM850e and the Gigabyte UD850GM PG5 ICE are 80 PLUS Gold certified. This certification indicates that both units provide at least 87% efficiency at 20% and 100% loads, ensuring minimal energy waste. However, while both are efficient, the CORSAIR’s Intel ATX 3.1 certification supports PCIe 5.1 platforms and can handle 2x transient power excursions from the GPU, making it a compelling option for those with high-performance graphics cards.

Cooling Solutions

Cooling performance is vital for maintaining optimal operation, particularly under load. The CORSAIR RM850e features a 120mm rifle bearing fan that is designed to keep noise levels low, even at full load. The Gigabyte UD850GM PG5 ICE, on the other hand, incorporates a 120mm smart hydraulic bearing fan, optimised for thermal management. This difference means that while both units strive for quiet operation, the Gigabyte's smart design may offer better thermal performance in certain situations.

Safety Features

Both power supplies come equipped with numerous safety features to protect against various electrical issues. The CORSAIR RM850e includes a modern standby compatibility feature, enhancing its responsiveness and efficiency in low-load situations. The Gigabyte UD850GM PG5 ICE, however, boasts a comprehensive set of protections, including OVP (Over Voltage Protection), OPP (Over Power Protection), SCP (Short Circuit Protection), UVP (Under Voltage Protection), OCP (Over Current Protection), and OTP (Over Temperature Protection). This extensive safety net may provide peace of mind for users who are concerned about electrical surges and system reliability.

Compatibility and Future-Proofing

In terms of compatibility, both power supplies are designed to meet the demands of modern systems. The CORSAIR RM850e is Intel ATX 3.1 certified and supports PCIe 5.1, making it suitable for next-generation graphics cards. Similarly, the Gigabyte UD850GM PG5 ICE is also Intel ATX 3.1 and PCIe Gen 5.1 ready. This parity in capabilities makes both units future-proof for current and upcoming hardware, ensuring they can handle the latest technology without issue.

Price Comparison

Price can often be a deciding factor for many consumers. The CORSAIR RM850e is available for £85.99, while the Gigabyte UD850GM PG5 ICE is priced at £99.61. This £13.62 difference may influence budget-conscious buyers who are looking for quality without overspending. While both units offer similar wattage and efficiency ratings, the CORSAIR offers a more attractive price point, especially for users who do not require the additional features of the Gigabyte.

Which should you buy?

Choosing between the CORSAIR RM850e and the Gigabyte UD850GM PG5 ICE ultimately depends on your specific needs and budget. If you are looking for a reliable and efficient power supply at a lower price point, the CORSAIR RM850e is an excellent choice with its fully modular design and quiet operation. However, if you prioritise advanced safety features and potentially better thermal performance, the Gigabyte UD850GM PG5 ICE, despite its higher price, might be worth considering. Both units provide solid performance, but your preference for features and budget will guide your final decision.

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CORSAIR RM850e vs Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su | versusfinder