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MSI MAG A1000GLS PCIE5 Power Supply Unit vs MONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe

Updated August 2026The MSI MAG A1000GLS offers superior power output and durability features, making it the better choice for high-performance setups, while the MONTECH Century II is a more budget-friendly option.

The MSI MAG A1000GLS offers superior power output and durability features, making it the better choice for high-performance setups, while the MONTECH Century II is a more budget-friendly option.

Why MSI MAG A1000GLS PCIE5 Power Supply Unit is better

Higher Power

MSI provides 1000W compared to MONTECH's 850W

Durability Features

MSI includes multiple protection features for reliability

Low Noise Operation

MSI has a dedicated low-noise fan design

Why MONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe is better

Lower Price

MONTECH is priced at £80.04, significantly cheaper

Fully Modular

MONTECH offers a fully modular design for better cable management

Long Warranty

MONTECH provides a 10-year warranty for peace of mind

Overall score

MSI MAG A1000GLS PCIE5 Power Supply Unit
85
MONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe
75

Specifications

SpecMSI MAG A1000GLS PCIE5 Power Supply UnitMONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe
BrandMSIMontech
Certification80 PLUS Gold80 PLUS Gold
ModularityPartialFully
Connector Type12V-2x612V-2x6
Fan Size135mmN/A

Dimension comparison

MSI MAG A1000GLS PCIE5 Power Supply UnitMONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe

Price Comparison

When considering price, the MONTECH Century II stands out as the more affordable option at £80.04, while the MSI MAG A1000GLS is priced significantly higher at £104.99. This represents a difference of £24.95, making the MONTECH a more attractive choice for budget-conscious consumers. The lower price of the MONTECH does not come at the expense of quality, as both products are 80 PLUS Gold certified, ensuring efficient power delivery. Therefore, if cost is your primary concern, the MONTECH Century II offers a compelling value proposition.

Power Output

In terms of power output, the MSI MAG A1000GLS provides a robust 1000W, which positions it well for high-demand hardware, especially for users who may be running multiple GPUs or high-performance CPUs. In contrast, the MONTECH Century II delivers 850W, which is still substantial but may limit its suitability for the most power-hungry setups. The additional 150W offered by the MSI could be crucial for gamers and professionals who require more headroom for overclocking or extensive hardware configurations. Thus, for sheer power capability, the MSI MAG A1000GLS is the clear leader.

Efficiency Ratings

Both the MSI MAG A1000GLS and the MONTECH Century II boast an 80 PLUS Gold certification, indicating their efficiency in converting AC power to DC power with up to 90% efficiency. This means both power supplies are designed to minimise energy wastage, making them suitable for high-performance systems while also being energy efficient. This commonality ensures that users can expect reliable performance from either option without incurring excessive energy costs. However, the additional features of the MSI, such as its durable design and low-noise operation, may provide a more rewarding experience for those who prioritise performance and reliability.

Cable Management

Cable management can significantly impact the airflow and aesthetics of a PC build. The MONTECH Century II is fully modular, allowing users to connect only the cables they need, which can help reduce clutter inside the case. This feature is particularly beneficial for those who value a tidy setup and improved airflow. On the other hand, while the MSI MAG A1000GLS does not explicitly state it is fully modular, it comes with native 12V-2x6 PCIe connectors, which simplifies the connection process for PCIe 5.1 GPUs. While both power supplies offer solutions for cable management, the MONTECH's fully modular design may appeal more to users who are meticulous about their builds.

Durability and Design

The durability of a power supply is crucial for long-term reliability. The MSI MAG A1000GLS is designed with a half-bridge LLC topology and includes multiple protection features such as OCP, OTP, and OVP, ensuring stable and secure operation. In comparison, the MONTECH Century II also promises high-quality performance, with a 10-year warranty that reflects confidence in its durability. However, specific details about the protection features for the MONTECH are not provided. Users prioritising long-term reliability might lean towards the MSI for its detailed safety features, but the MONTECH's warranty does indicate a commitment to quality.

Noise Levels

Noise levels can greatly affect the user experience, especially in a gaming or work environment. The MSI MAG A1000GLS features a 135 mm fluid-dynamic bearing fan designed to operate quietly. This design helps maintain low sound levels, comparable to a peaceful night, which is a significant advantage for those sensitive to noise. The MONTECH Century II does not provide specific noise level details but is also geared towards gaming, suggesting that it is designed with noise considerations in mind. However, without explicit specifications, the MSI's commitment to low-noise operation gives it an edge in this area.

Compatibility and Future-Proofing

Both the MSI MAG A1000GLS and the MONTECH Century II are compatible with ATX 3.1 and PCIe 5.1 standards, ensuring they are suitable for modern hardware. This compatibility is crucial for users looking to future-proof their systems against upcoming technological advancements. The MSI’s native connectors for PCIe 5.1 GPUs further enhance its appeal for users planning to invest in the latest graphics technology. While both power supplies are prepared for the current and next generation of components, the specific focus on high-demand GPUs in the MSI may offer an additional layer of future-proofing for power users.

Which should you buy?

Choosing between the MSI MAG A1000GLS and the MONTECH Century II ultimately depends on your specific needs. If you are looking for a power supply with higher wattage, robust durability features, and low noise operation, the MSI MAG A1000GLS is the superior choice, albeit at a higher price of £104.99. Conversely, if budget is a primary concern and you still desire a reliable, high-efficiency power supply, the MONTECH Century II offers excellent value at £80.04, coupled with its fully modular design and substantial warranty. Your decision should reflect your priorities regarding performance, budget, and specific use cases.

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MSI MAG A1000GLS PCIE5 Power Supply Unit vs MONTECH Century II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybe | versusfinder