CORSAIR RM850e vs Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su
Updated August 2026 — 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.
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
Specifications
| Spec | CORSAIR RM850e | Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su |
|---|---|---|
| Wattage | 850W | 850W |
| Certification | 80 PLUS Gold | 80 PLUS Gold |
| Fan Size | 120mm | 120mm |
| Capacitors | 105°C-rated | 100% Japanese |
| Modular | Fully Modular | Fully Modular |
Dimension comparison
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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