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Apevia ITX-PFC500W Mini ITX/Flex ATX / 1U 500W vs MONTECH Century II - 850W High-End ATX Gaming

Updated August 2026 — MONTECH Century II - 850W High-End ATX Gaming leads on length and cooling.

The MONTECH Century II offers superior power and efficiency, making it the better choice for high-performance users. The Apevia ITX-PFC500W is a budget-friendly option for compact builds.

Why Apevia ITX-PFC500W Mini ITX/Flex ATX / 1U 500W is better

Price

Apevia is significantly cheaper at $49.99.

Size

Apevia is designed for small form factor builds.

Basic Features

Apevia has sufficient connectors for basic setups.

Why MONTECH Century II - 850W High-End ATX Gaming is better

Power Output

MONTECH provides 850W compared to Apevia's 500W.

Efficiency

MONTECH has an 80 Plus Gold certification.

Warranty

MONTECH offers a 10-year warranty.

Overall score

Apevia ITX-PFC500W Mini ITX/Flex ATX / 1U 500W
65
MONTECH Century II - 850W High-End ATX Gaming
85

Specifications

SpecApevia ITX-PFC500W Mini ITX/Flex ATX / 1U 500WMONTECH Century II - 850W High-End ATX Gaming
Wattage500W850W
EfficiencyN/A80 Plus Gold
ModularFullyFully
WarrantyN/A10 Years
ConnectorsBasicAdvanced

Dimension comparison

Apevia ITX-PFC500W Mini ITX/Flex ATX / 1U 500WMONTECH Century II - 850W High-End ATX Gaming

Overview of the Products

In this comparison, we will look at two power supplies: the Apevia ITX-PFC500W Mini ITX/Flex ATX 500W Fully Modular Power Supply and the MONTECH Century II 850W High-End ATX Gaming Power Supply. The Apevia model is priced at $49.99, while the MONTECH model is higher at $89.90. The price difference stands at approximately 80%, with MONTECH being the more expensive option.

The Apevia power supply is designed specifically for small form factor builds, making it suitable for Mini-ITX and Flex ATX systems. On the other hand, the MONTECH Century II targets gamers and high-performance users, boasting an 850W capacity and 80 Plus Gold certification for efficiency. Each power supply has unique features that cater to different user needs.

Power Output Comparison

When it comes to power output, the MONTECH Century II outshines the Apevia ITX-PFC500W with its impressive 850W rating. This is 70% more power than the 500W offered by the Apevia model, making it ideal for high-end gaming setups that require more energy for multiple components.

The Apevia power supply, while lower in wattage, is designed for specific applications such as POS and AIO systems, which may not require as much power. However, if you’re looking to build a gaming rig or a system with multiple GPUs, the MONTECH's higher wattage will provide the necessary headroom for future upgrades and intensive tasks.

Modular Design Features

Both power supplies are fully modular, allowing users to connect only the cables they need, reducing clutter and improving airflow inside the case. The Apevia ITX-PFC500W features a standard Mini-ITX / Flex ATX design, while the MONTECH Century II is built for conventional ATX cases.

The modular design in both models facilitates easier cable management and installation. However, the MONTECH also adheres to the latest ATX 3.1 and PCIe 5.1 standards, ensuring compatibility with the newest hardware, which is a significant advantage for gamers and power users looking to future-proof their setups.

Efficiency Ratings

The MONTECH Century II has received an 80 Plus Gold certification, indicating that it operates at a minimum efficiency of 87% under typical loads. This certification ensures that less power is wasted as heat, translating to lower energy bills and reduced environmental impact.

In contrast, the Apevia ITX-PFC500W does not specify an efficiency rating like 80 Plus Gold, which may suggest it operates at lower efficiency levels. For users who prioritize energy efficiency, the MONTECH's Gold certification is a compelling reason to consider it over the Apevia model.

Cooling Solutions

Cooling is a crucial factor in any power supply, especially in high-performance gaming rigs. The Apevia ITX-PFC500W utilizes a 40mm double ball bearing fan for cooling, which is sufficient for its lower power output but may struggle in more demanding environments.

On the other hand, the MONTECH Century II does not specifically mention its cooling solution; however, its design is likely optimized for better airflow and thermal management given its higher wattage and intended use for gaming. Proper cooling is essential for maintaining component longevity and performance, and the MONTECH likely has the edge in this regard.

Connectors and Compatibility

The Apevia ITX-PFC500W comes with a variety of connectors, including 1 x 20+4pin Main Power, 1 x 8pin 12V, and 2x 6+2 PCIe connectors, making it versatile for small form factor builds. It also includes connectors for SATA and Molex, catering to a range of devices.

In contrast, the MONTECH Century II is designed for modern setups with its 12V-2x6 cable, ensuring compatibility with the latest graphics cards and components. The variety of connectors provided by the MONTECH gives it an advantage for users looking to build a high-performance system that demands more from its power supply.

Warranty and Support

The MONTECH Century II offers a 10-year warranty, which reflects the brand's confidence in its durability and performance. This long warranty period is particularly attractive for gamers and professionals who rely on their systems for extended periods.

The warranty details for the Apevia ITX-PFC500W are not specified, which could be a concern for users looking for assurance in their purchase. A longer warranty typically indicates better build quality and support, making the MONTECH the preferable choice for peace of mind.

Which should you buy?

Choosing between the Apevia ITX-PFC500W and the MONTECH Century II ultimately depends on your specific needs. If you are building a compact system that does not require excessive power, the Apevia, at $49.99, serves as a budget-friendly option. However, if you are a gamer or a user planning to run high-performance components, the MONTECH Century II, priced at $89.90, offers superior wattage, efficiency, and future-proofing features that justify the higher cost. The decision hinges on whether you prioritize budget constraints or performance and reliability for demanding applications.