Lian Li A3-mATX-WD-26.3L Micro Form vs JONSBO/JONSPLUS Z20 Black Micro-ATX Mini

Design and Build Quality

Product A utilizes 2mm integrated bent steel panels for its top and panel sections, complemented by a large area of delicate square openings. This construction aims to combine heat dissipation with craftsmanship. It also includes a Comprehensive Coverage Magnetic Dust Filter to protect internal components. Product B features high airflow steel mesh panels on the side and top, designed for optimal airflow suitable for high-TDP GPUs. It distinguishes itself with a stylish walnut wood front panel and a modular structure, targeting a clean and minimalist aesthetic. Both cases prioritize steel construction, but Product A emphasizes thickness while Product B emphasizes mesh airflow and wood accents.

Case Volume and Form Factor

The physical footprint differs significantly between the two units. Product A is built with only about 20L of volume, allowing it to be easily placed in various desktop environments. This compact design is intended for users prioritizing minimal desk space usage. Product B offers a Compact 26.3L Design, which is slightly larger but still considered a micro-ATX mini form factor. The additional volume in Product B accommodates bigger hardware support, including mATX/ITX motherboards with 4 expansion slots. Users must decide between the ultra-compact 20L profile of Product A or the slightly more spacious 26.3L interior of Product B.

GPU Compatibility and Clearance

Graphics card support is a critical differentiator for PC cases. Product A supports GPU lengths up to 363mm, though this depends on other hardware configurations. Users are advised to refer to specific images for GPU compatibility due to potential interference. Product B accommodates GPUs up to 415mm, achieving a compact footprint without sacrificing performance. This 52mm difference allows Product B to house significantly larger graphics cards, making it a more viable option for high-end gaming builds that require triple-fan coolers or bulky aftermarket designs.

Cooling and Radiator Support

Thermal management capabilities vary between the two models. Product A is compatible with a TOP 240 AIO liquid cooling solution. This limits users to 240mm radiators for liquid cooling setups. Product B supports 360mm Radiators, capable of housing larger cooling loops. Additionally, Product B is designed to be perfect for high-TDP GPUs and radiator setups due to its mesh panels. The ability to mount a 360mm radiator gives Product B a distinct advantage for users planning to overclock CPUs or manage heat from powerful components.

Power Supply Flexibility

Both cases offer versatile power supply options. Product A supports ATX/SFX/SFX-L power supplies, which can be adjusted in multiple gears. It is recommended to check pictures for detailed introduction to prevent interference from different hardware, and it supports SFX side mounting. Product B is compatible with ATX/SFX/SFX-L and LIAN LI EDGE power supplies. It offers flexible PSU installation with Front/Side orientation options that enhance clearance and cable management. While both support standard form factors, Product B explicitly mentions orientation options that may simplify cable routing.

Fan Configuration Options

Airflow potential is defined by fan mounting points. Product A supports TOP 120mm2/140mm2 and Bottom 120mm2/140mm2, along with Real 120mm1 /92mm1 configurations. Product B supports Up to 10 x 120mm Fans. The ability to house ten 120mm fans indicates a higher maximum airflow potential for Product B. Product A provides specific top and bottom mounting locations, ensuring balanced intake and exhaust, but Product B offers greater density for fan installation, which can contribute to lower internal temperatures under heavy load.

Price and Value Proposition

Cost is a major factor for builders comparing these chassis. Product A is listed at $99.99. It offers features like a carrying handle and magnetic dust filters which add convenience. Product B is priced at $89.99, making it the more affordable option by $10. Despite the lower price, Product B offers superior hardware support regarding GPU length and radiator size. For budget-conscious builders who still want high performance, Product B presents a stronger value proposition. Product A justifies its higher price through specific build quality features like 2mm steel and portability aids.

Final Verdict and Recommendation

Product B emerges as the stronger choice for performance-oriented builds due to its support for 415mm GPUs and 360mm radiators at a lower price point of $89.99. It balances compactness with high hardware compatibility. Product A is suitable for users who prioritize extreme compactness at 20L and need portability features like the detachable carrying handle. However, the hardware limitations on cooling and GPU length make it less flexible for future upgrades. For most users seeking a micro-ATX case, Product B provides better long-term value and thermal performance.