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Lian Li A3-mATX-WD-26.3L Micro Form Factor vs Thermaltake Versa H21 SPCC ATX Mid Tower Computer

Updated July 2026 — Lian Li A3-mATX-WD-26.3L Micro Form Factor wins on gpu length and cpu cooler height, Thermaltake Versa H21 SPCC ATX Mid Tower Computer wins on depth and height.

The Lian Li A3 offers superior cooling and aesthetics, while the Thermaltake Versa H21 is more budget-friendly and user-friendly.

Why Lian Li A3-mATX-WD-26.3L Micro Form Factor is better

Cooling

Supports 360mm radiator and up to 10 fans.

Design

Stylish wood front panel enhances aesthetics.

Modularity

Flexible PSU installation and modular design.

Why Thermaltake Versa H21 SPCC ATX Mid Tower Computer is better

Price

More economical at $54.99.

Ease of Use

Tool-free installation for beginners.

Ventilation

Perforated panels for good airflow.

Overall score

Lian Li A3-mATX-WD-26.3L Micro Form Factor
85
Thermaltake Versa H21 SPCC ATX Mid Tower Computer
70

Specifications

SpecLian Li A3-mATX-WD-26.3L Micro Form FactorThermaltake Versa H21 SPCC ATX Mid Tower Computer
MotherboardmATX/ITXMini ITX/Micro ATX/ATX
Fan Support10 x 120mm3 x 120mm
Radiator Support360mm120mm
USB PortsNone1 x USB 3.0, 1 x USB 2.0
MaterialAluminum/WoodSPCC

Dimension comparison

Lian Li A3-mATX-WD-26.3L Micro Form FactorThermaltake Versa H21 SPCC ATX Mid Tower Computer

Introduction to the Lian Li A3 and Thermaltake Versa H21

The Lian Li A3-mATX-WD-26.3L Micro Form Factor Chassis and the Thermaltake Versa H21 SPCC ATX Mid Tower offer distinct advantages for PC builders. The Lian Li A3 is priced at $89.99, while the Thermaltake Versa H21 is more economical at $54.99, making it about 39% cheaper. This price difference highlights the varying approaches of these two brands toward functionality, design, and target user base.

Design and Aesthetics

In terms of design, the Lian Li A3 stands out with its compact 26.3L footprint and stylish walnut wood front panel, appealing to users who prefer a minimalist aesthetic. It supports a modular design, allowing customization without sacrificing space. In contrast, the Thermaltake Versa H21 features a perforated metal mesh front and top panel, designed for maximum ventilation and a more utilitarian look. While both cases have their unique charm, the choice largely depends on whether you prefer elegant wood accents or a more functional metal design.

Compatibility and Expansion Options

The Lian Li A3 accommodates mATX and ITX motherboards with four expansion slots, and its GPU support extends up to 415mm, providing excellent hardware compatibility. It also supports a 360mm radiator and up to 10 x 120mm fans, making it ideal for high-performance builds. Conversely, the Thermaltake Versa H21 is compatible with Mini ITX, Micro ATX, and ATX motherboards and offers a more modest expansion capacity. It supports long graphics cards up to 315mm and has pre-installed mounting holes for various cooling solutions. For those seeking extensive expansion, the Lian Li A3 is the clear winner.

Cooling Efficiency

Cooling capabilities are critical for any PC case, and both the Lian Li A3 and Thermaltake Versa H21 have made thoughtful design choices. The Lian Li A3 features high airflow steel mesh panels, optimized for high-TDP GPUs and radiator setups, while the Thermaltake Versa H21 emphasizes ventilation with its perforated front and top panels. The Versa H21 includes a pre-installed 120mm rear fan and supports additional fans and liquid cooling systems. However, the Lian Li A3's support for 10 fans and a 360mm radiator positions it as superior for users prioritizing thermal performance.

Installation and Ease of Use

When it comes to installation, the Lian Li A3 offers flexible PSU installation options and a modular design that simplifies the setup process. However, it does not include fans, which may require additional investment and planning. The Thermaltake Versa H21, on the other hand, promotes tool-free installation and provides a cleanable air filter, making it user-friendly for beginners. This ease of use could appeal to those who may not be as experienced with PC building. Overall, if convenience is a priority, the Thermaltake Versa H21 takes the lead.

Additional Features

Both cases boast unique features that enhance user experience. The Lian Li A3 includes a stylish wood front panel, adding a touch of elegance, while the Thermaltake Versa H21 comes equipped with USB 3.0 and USB 2.0 ports, alongside HD audio jacks for direct access. The Versa H21 also allows for extensive cable management, which is essential for maintaining a neat setup. However, the Lian Li A3's modular structure may offer greater flexibility for future upgrades.

Price and Value

The price difference between these two cases is significant, with the Lian Li A3 retailing at $89.99 and the Thermaltake Versa H21 at $54.99. At approximately 39% lower, the Versa H21 delivers substantial value for budget-conscious builders. However, the Lian Li A3 justifies its higher price with premium features, aesthetics, and cooling capabilities. Depending on your budget and requirements, either case could represent a good investment.

Which should you buy?

Choosing between the Lian Li A3 and the Thermaltake Versa H21 ultimately depends on your specific needs and budget. If you prioritize aesthetics, advanced cooling options, and modular design, the Lian Li A3 is likely worth the investment at $89.99. On the other hand, if you're looking for a budget-friendly option that still provides solid performance and ease of use, the Thermaltake Versa H21 at $54.99 is an excellent choice. Both cases cater to different user profiles, ensuring that regardless of your decision, you will have a capable chassis for your PC build.