Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su vs SAMA G850 Power Supply - 850W Fully Modular 80 Plus Gold Certified ATX 3.1 & PCI
Updated August 2026 — The Gigabyte UD850GM PG5 ICE offers superior build quality and brand reputation, while the SAMA G850 provides a more budget-friendly option with similar features.
The Gigabyte UD850GM PG5 ICE offers superior build quality and brand reputation, while the SAMA G850 provides a more budget-friendly option with similar features.
Why Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su is better
brand reputation
Gigabyte is a well-known brand in power supplies.
build quality
Features 100% Japanese capacitors for durability.
cooling solution
Includes a smart hydraulic bearing fan for efficient cooling.
Why SAMA G850 Power Supply - 850W Fully Modular 80 Plus Gold Certified ATX 3.1 & PCI is better
price
SAMA G850 is more affordable at £84.99.
fan size
Offers a larger 140mm fan for quieter operation.
efficiency
Explicitly states up to 91.15% efficiency at typical load.
Overall score
Specifications
| Spec | Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su | SAMA G850 Power Supply - 850W Fully Modular 80 Plus Gold Certified ATX 3.1 & PCI |
|---|---|---|
| Certification | 80 Plus Gold | 80 Plus Gold |
| Modular Design | Fully Modular | Fully Modular |
| Protection Features | OVP, OPP, SCP, UVP, OCP, OTP | OVP, OCP, OTP, OPP, SCP, UVP |
| Cooling Fan | 120mm HYB | 140mm FDB |
| Efficiency | Up to 91% | Up to 91.15% |
Dimension comparison
Introduction to Power Supplies
Power supplies are essential components in any computer system, providing the necessary energy for all other parts to function efficiently. In this comparison, we will examine two notable products in the market: the Gigabyte UD850GM PG5 ICE and the SAMA G850. Both are 850W fully modular power supplies with 80 Plus Gold certification, but they have unique features and pricing that may influence your decision.
Price Comparison
When considering price, the SAMA G850 is more affordable, retailing at £84.99, while the Gigabyte UD850GM PG5 ICE is priced at £99.61. This difference of £14.62 may be significant for budget-conscious consumers, especially given that both products offer similar power ratings. However, price alone should not dictate your choice; it is essential to evaluate the additional features and benefits each product offers for the value they provide.
Efficiency and Certification
Both the Gigabyte UD850GM PG5 ICE and the SAMA G850 are certified with an 80 Plus Gold rating, meaning they can achieve up to 91.15% efficiency at typical loads. This high level of efficiency means reduced power waste and lower heat generation, making both units suitable for high-performance systems. While both models boast excellent efficiency, the SAMA G850 explicitly states its performance levels, which may appeal more to consumers looking for detailed specifications.
Modular Design
The fully modular design of both power supplies allows users to connect only the cables they need, contributing to cleaner builds and improved airflow. The Gigabyte UD850GM PG5 ICE emphasises a compact size and features a 120mm smart hydraulic bearing fan for cooling. In contrast, the SAMA G850 offers a 140mm ECO fan with Fluid Dynamic Bearing, which enhances quiet operation while providing effective cooling. The choice between these cooling solutions may depend on your specific build requirements and preferences for noise levels.
Build Quality and Components
Build quality is critical in a power supply, and both brands utilise high-quality components. The Gigabyte UD850GM PG5 ICE features 100% Japanese capacitors, known for their durability and reliability. Meanwhile, the SAMA G850 also employs premium Japanese capacitors and includes a silent 140mm fan for optimal cooling. The emphasis on high-quality materials in both products suggests that users can expect longevity and stable performance from either choice.
Protection Features
Both the Gigabyte UD850GM PG5 ICE and the SAMA G850 come with multiple protection features to ensure safe operation. The Gigabyte model includes 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). Similarly, the SAMA G850 includes the same range of protections, ensuring that both units can safeguard your system effectively. This aspect may provide peace of mind to users concerned about the safety of their hardware investments.
Compatibility with Modern Standards
In terms of compatibility, both power supplies are designed to meet the latest standards. The Gigabyte UD850GM PG5 ICE is Intel ATX 3.1 and PCIe Gen 5.1 ready, making it suitable for cutting-edge hardware. The SAMA G850 also complies with Intel ATX 3.1 and features a native 12V-2x6 connector specifically designed for the latest NVIDIA GeForce RTX 50 and 40 Series GPUs. This makes both power supplies excellent choices for users building or upgrading to modern systems.
Which should you buy?
Choosing between the Gigabyte UD850GM PG5 ICE and the SAMA G850 ultimately depends on your specific needs and budget. If price is a primary concern, the SAMA G850 offers a slightly lower cost while still providing a robust set of features and protections. However, if you prioritise brand reputation and a compact design with a focus on efficient cooling, the Gigabyte UD850GM PG5 ICE may be worth the additional investment. Both options provide excellent efficiency and build quality, ensuring reliable power delivery for your high-performance computing needs.
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