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CORSAIR SF850 vs Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su

Updated August 2026The CORSAIR SF850 excels in efficiency and build quality, while the Gigabyte UD850GM PG5 ICE offers better value for budget-conscious users.

The CORSAIR SF850 excels in efficiency and build quality, while the Gigabyte UD850GM PG5 ICE offers better value for budget-conscious users.

Why CORSAIR SF850 is better

Efficiency

CORSAIR SF850 has 80 PLUS Platinum certification.

Build Quality

CORSAIR uses 105°C rated Japanese capacitors.

Reliability

CORSAIR offers advanced protections for stability.

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

Price

Gigabyte UD850GM PG5 ICE is £50.38 cheaper.

Cooling

Gigabyte has a larger 120mm fan for better airflow.

Modular Design

Both are fully modular, but Gigabyte is compact.

Overall score

CORSAIR SF850
85
Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su
75

Specifications

SpecCORSAIR SF850Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su
BrandCorsairGigabyte
Power Rating850W850W
Certification80 PLUS Platinum80 PLUS Gold
Form FactorSFXATX
Protection FeaturesOVP, OPP, SCP, UVP, OCP, OTPOVP, OPP, SCP, UVP, OCP, OTP

Dimension comparison

CORSAIR SF850Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su

Price Comparison

When it comes to price, the Gigabyte UD850GM PG5 ICE offers a significant advantage over the CORSAIR SF850. The Gigabyte power supply is priced at £99.61, while the CORSAIR model costs £149.99. This difference of £50.38 makes the Gigabyte a more budget-friendly option for those looking to build or upgrade their systems without compromising on quality. Both power supplies boast impressive features, but the cost-effectiveness of the Gigabyte could be a deciding factor for many consumers.

Efficiency Ratings

Efficiency is a critical factor in power supplies, and here, the CORSAIR SF850 takes the lead with its 80 PLUS Platinum certification. This rating indicates that it is capable of delivering at least 90% efficiency at 50% load, resulting in lower energy costs over time. In contrast, the Gigabyte UD850GM PG5 ICE holds an 80 PLUS Gold certification, which guarantees at least 87% efficiency at the same load. While both are efficient, the Platinum rating of the CORSAIR translates to better energy savings, making it a more appealing choice for environmentally conscious users.

Build Quality and Components

In terms of build quality, both power supplies utilise high-quality components, but there are notable differences. The CORSAIR SF850 features 105°C rated Japanese capacitors, which are known for their reliability and longevity. This is particularly important for maintaining stable power delivery over extended periods. On the other hand, the Gigabyte UD850GM PG5 ICE also employs 100% Japanese capacitors, ensuring durability but slightly less headroom in thermal performance. Both brands are well-regarded, but the superior capacitor ratings in the CORSAIR may provide added peace of mind for users focused on longevity.

Modular Design

Modular power supplies offer benefits in terms of cable management, and both the CORSAIR SF850 and Gigabyte UD850GM PG5 ICE are fully modular. This means that users can connect only the cables they need, which helps reduce clutter in the PC case. The CORSAIR model utilises Type-5 Micro-Fit PSU connectors, which allow for a compact and tidy setup, especially in smaller cases. Meanwhile, the Gigabyte’s fully modular design also supports a clean build but does not specify any unique connector types. Both options excel in this category, ensuring optimal cable management for users.

Cooling Solutions

Cooling performance can greatly impact the reliability of a power supply, and both models employ effective cooling solutions. The CORSAIR SF850 is equipped with a 92mm PWM cooling fan designed for low-noise operation while delivering powerful cooling. In contrast, the Gigabyte UD850GM PG5 ICE features a larger 120mm smart hydraulic bearing fan, which generally provides improved airflow and lower temperatures. While both fans are efficient, the larger fan in the Gigabyte may offer better cooling performance, especially under load, which can be a critical factor for high-performance builds.

Compliance and Compatibility

Both power supplies are compliant with the latest ATX 3.1 power standard and support PCIe Gen 5.1, ensuring compatibility with the latest hardware. This makes either power supply a great choice for building modern systems. However, it’s worth noting that the CORSAIR SF850 is explicitly mentioned as PCIe 5.1 ready, which may provide further assurance for users investing in cutting-edge technology. The comprehensive compatibility of both models makes them viable options for users looking to future-proof their builds.

User Experience and Reliability

Customer experience and reliability are paramount when selecting a power supply. The CORSAIR SF850, with its Platinum efficiency and high-quality components, is designed to deliver unwavering power and reliability. Similarly, the Gigabyte UD850GM PG5 ICE promises reliable and efficient power delivery, supported by advanced protections such as OVP, OPP, SCP, UVP, OCP, and OTP. While both brands have strong reputations for quality, the additional protections and high-efficiency rating of the CORSAIR model may appeal more to users prioritising reliability in demanding environments.

Which should you buy?

Choosing between the CORSAIR SF850 and the Gigabyte UD850GM PG5 ICE comes down to your specific needs and budget. If you are looking for top-tier efficiency, exceptional reliability, and superior build quality, the CORSAIR SF850, priced at £149.99, is an excellent choice. However, if budget is a primary concern and you still want a high-quality power supply, the Gigabyte UD850GM PG5 ICE, at £99.61, provides a great balance of performance and value. Both power supplies are excellent, but your priorities will ultimately determine which one suits your needs best.

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CORSAIR SF850 vs Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su | versusfinder