CORSAIR RM1000x SHIFT vs Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su
Updated August 2026 — The CORSAIR RM1000x SHIFT excels in performance and innovative design, while the Gigabyte UD850GM PG5 ICE offers great value and efficiency. Choose based on your budget and specific needs.
The CORSAIR RM1000x SHIFT excels in performance and innovative design, while the Gigabyte UD850GM PG5 ICE offers great value and efficiency. Choose based on your budget and specific needs.
Why CORSAIR RM1000x SHIFT is better
higher wattage
CORSAIR offers 1000W compared to Gigabyte's 850W
better cooling
CORSAIR has a larger 140mm fan for quieter operation
innovative design
CORSAIR features side-mounted connections for easier cable management
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 versus CORSAIR's £164.99
80 PLUS certification
Gigabyte is 80 PLUS Gold certified for efficiency
compact design
Gigabyte has a sleek and compact form factor
Overall score
Specifications
| Spec | CORSAIR RM1000x SHIFT | Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su |
|---|---|---|
| Brand | Corsair | Gigabyte |
| Certification | Not specified | 80 PLUS Gold |
| Cooling Type | Fluid Dynamic | Hydraulic Bearing |
| Protection Features | Not specified | OVP/OPP/SCP/UVP/OCP/OTP |
| Cable Management | Debossed PVC | Standard |
Dimension comparison
Price Comparison
The CORSAIR RM1000x SHIFT is priced at £164.99, while the Gigabyte UD850GM PG5 ICE is significantly more affordable at £99.61. This difference of £65.38 makes the Gigabyte power supply a more budget-friendly option, especially for users looking to save money while still acquiring a reliable power supply. While the CORSAIR model boasts higher wattage at 1000W compared to the Gigabyte's 850W, the price disparity may lead budget-conscious consumers to favour the Gigabyte unit.
Design and Build Quality
In terms of design, both power supplies offer fully modular configurations, but they cater to different aesthetic preferences. The Gigabyte UD850GM PG5 ICE features a compact design and a sleek white finish, appealing to users who prefer a modern look. On the other hand, the CORSAIR RM1000x SHIFT introduces an innovative side-mounted connection position, optimising cable management and accessibility. This thoughtful design can be particularly beneficial for users who want to streamline their builds, making the CORSAIR appealing for those who prioritise neatness and organisation.
Performance and Efficiency
When it comes to performance, the Gigabyte UD850GM PG5 ICE is 80 PLUS Gold certified, ensuring efficient power delivery. The inclusion of 100% Japanese capacitors is also a notable feature that enhances durability. In contrast, the CORSAIR RM1000x SHIFT, while not explicitly stated as 80 PLUS certified in the provided data, is known for its reliability and efficiency, powered by a 140mm fluid dynamic bearing fan that optimises cooling and noise levels. The Gigabyte's certification may give it an edge in energy efficiency, particularly for users focused on reducing electricity costs.
Cooling Solutions
Cooling solutions differ significantly between the two models. The CORSAIR RM1000x SHIFT utilises a 140mm fluid dynamic bearing fan, designed for high performance and low noise. This fan configuration is engineered to provide superior reliability, which can be crucial for high-performance systems. In contrast, the Gigabyte UD850GM PG5 ICE is equipped with a 120mm smart hydraulic bearing fan, which also aims to optimise thermal performance. While both fans are designed for efficient cooling, the larger fan in the CORSAIR model may offer better airflow and quieter operation under load, appealing to users who value a quieter computing environment.
Compatibility and Features
Both power supplies cater to modern hardware needs but with slight variances in their specifications. The Gigabyte UD850GM PG5 ICE is Intel ATX 3.1 and PCIe Gen 5.1 ready, making it a suitable choice for cutting-edge builds. This ensures compatibility with the latest graphics cards and motherboards. Meanwhile, the CORSAIR RM1000x SHIFT includes a native 12V-2x6 GPU cable, specifically designed to power the latest NVIDIA GeForce RTX 50 Series cards. Both models offer features tailored for modern systems, but the Gigabyte's forward compatibility with newer standards could be a deciding factor for tech enthusiasts.
Cable Management
The importance of cable management cannot be overlooked, especially in high-performance builds. The CORSAIR RM1000x SHIFT features debossed PVC cables that are ultra-flexible, promoting a cleaner and neater build. The inclusion of low-profile combs further aids in organisation. Conversely, the Gigabyte UD850GM PG5 ICE, while fully modular, does not highlight specific cable management features in the same way. For users who prioritise aesthetics and organisation, the innovative cable management solutions of the CORSAIR model may provide significant advantages, showcasing a thoughtful approach to building.
Protection and Safety Features
Both power supplies come with essential protection features, but the Gigabyte UD850GM PG5 ICE offers a comprehensive set of safeguards, including OVP, OPP, SCP, UVP, OCP, and OTP protections. These features are crucial for preventing damage during unexpected electrical issues. The CORSAIR RM1000x SHIFT is also designed for reliability but does not specify its protection mechanisms. Users who prioritise safety and reliability may find the Gigabyte's extensive protection features reassuring, especially for high-value components.
Which should you buy?
Deciding between the CORSAIR RM1000x SHIFT and the Gigabyte UD850GM PG5 ICE ultimately depends on your specific needs and budget. If you're seeking a high-wattage power supply with innovative cable management and superior cooling, the CORSAIR unit is an excellent choice, albeit at a higher price of £164.99. However, if you're more budget-oriented and require a reliable, fully modular power supply certified for efficiency and featuring ample protection, the Gigabyte at £99.61 offers great value. Weighing the price, performance, and features will guide you to the right choice for your build.
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