Lian Li A3-mATX-WD-26.3L Micro Form Factor Chassis-No Fans Included-Supports 360 vs Thermaltake Versa H21 SPCC ATX Mid Tower Computer Chassis CA-1B2-00M1NN-00
Updated August 2026 — The Lian Li A3-mATX-WD-26.3L offers superior cooling and design features, making it the better choice for enthusiasts, while the Thermaltake Versa H21 is a solid budget option.
The Lian Li A3-mATX-WD-26.3L offers superior cooling and design features, making it the better choice for enthusiasts, while the Thermaltake Versa H21 is a solid budget option.
Why Lian Li A3-mATX-WD-26.3L Micro Form Factor Chassis-No Fans Included-Supports 360 is better
Cooling Capacity
Supports up to 360mm radiator and 10 fans.
Build Quality
Features wood front panel and steel mesh for aesthetics.
Power Supply Flexibility
Supports ATX, SFX, and SFX-L power supplies.
Why Thermaltake Versa H21 SPCC ATX Mid Tower Computer Chassis CA-1B2-00M1NN-00 is better
Price
Lower price at C$69.99.
Expansion Slots
Offers 7 expansion slots for components.
User-Friendly
Simplified assembly process for beginners.
Overall score
Specifications
| Spec | Lian Li A3-mATX-WD-26.3L Micro Form Factor Chassis-No Fans Included-Supports 360 | Thermaltake Versa H21 SPCC ATX Mid Tower Computer Chassis CA-1B2-00M1NN-00 |
|---|---|---|
| Brand | Lian Li | Thermaltake |
| Material | Steel/Wood | SPCC |
| Case Type | Micro Form Factor | Mid Tower |
| Price | C$119.99 | C$69.99 |
| Warranty | 1 year | 1 year |
Dimension comparison
Overview of the Lian Li A3-mATX-WD-26.3L and Thermaltake Versa H21
The Lian Li A3-mATX-WD-26.3L is priced at C$119.99, making it a premium option compared to the Thermaltake Versa H21, which costs C$69.99. This price difference reflects the distinct designs and features that each chassis offers for PC builders and gamers.
The Lian Li A3 is a micro form factor chassis that supports various power supply configurations and includes a wood front panel for aesthetic appeal. In contrast, the Thermaltake Versa H21 is a mid-tower chassis made from SPCC material, focusing on functionality and expansion capabilities, making it ideal for home-computer builders.
Design and Build Quality
The design of the Lian Li A3-mATX-WD-26.3L emphasises versatility and modern aesthetics with its wood front panel and steel mesh side and top panels. This combination not only enhances airflow but also provides a unique look that stands out.
On the other hand, the Thermaltake Versa H21 has a more traditional mid-tower design, utilising SPCC material. While it may lack the aesthetic flair of the Lian Li A3, its practical structure is designed for easy access and customisation, appealing to users who prefer a straightforward build process.
Cooling Options
Cooling is a critical aspect in any PC build, and both cases offer distinct cooling capabilities. The Lian Li A3 supports extensive cooling configurations, accommodating up to a 360mm radiator and up to 10 x 120mm fans. This makes it an excellent choice for users looking to build high-performance systems that require significant cooling.
Conversely, the Thermaltake Versa H21 provides ample ventilation options but is limited in its cooling potential compared to the Lian Li A3. It features a basic setup that allows for adequate airflow but does not support as many fans or radiator sizes. This makes the Lian Li A3 a better option for those prioritising high cooling performance.
Interior Space and Compatibility
The Lian Li A3-mATX-WD-26.3L supports motherboards up to M-ATX and ITX sizes, along with a GPU clearance of 415mm. This spacious interior allows for the installation of high-end graphics cards while still accommodating various builds.
In contrast, the Thermaltake Versa H21 is designed to support standard ATX motherboards and offers a decent amount of internal space for components. It includes multiple bays for storage options, such as three external 5.25-inch bays and three 3.5-inch or 2.5-inch internal bays. While it provides ample room for many builds, it may not cater to users with particularly large components as effectively as the Lian Li A3.
Expansion and Upgradability
When it comes to expansion, the Lian Li A3 provides significant flexibility. It supports various power supply configurations, including ATX, SFX, and SFX-L, allowing users to choose their preferred power supply type. This is particularly beneficial for custom builds where space and component compatibility are crucial.
In contrast, the Thermaltake Versa H21 also offers decent expansion possibilities with seven expansion slots, making it suitable for users looking to add multiple graphics cards or additional components over time. While both cases provide expansion options, the versatility of the Lian Li A3 in terms of power supply compatibility stands out.
Ease of Assembly
The Lian Li A3-mATX-WD-26.3L is designed with ease of assembly in mind, featuring a layout that facilitates straightforward installation of components. Its thoughtful design includes adequate cable management features, helping to maintain a clean build.
On the other hand, the Thermaltake Versa H21 is also user-friendly, with a manageable frame size that simplifies the assembly process for both novice and experienced builders. Its cleanable air filter and perforated mesh bezel are practical features that enhance overall usability, making regular maintenance easier.
Price Comparison
The pricing differences between the two models are notable, with the Lian Li A3-mATX-WD-26.3L priced at C$119.99 and the Thermaltake Versa H21 at C$69.99. This C$50 difference reflects the premium features and higher cooling capacity offered by the Lian Li A3.
Given the price point, the Thermaltake Versa H21 provides excellent value for budget-conscious users looking for reliable performance without the need for advanced cooling or aesthetic features. However, the Lian Li A3 justifies its higher price by delivering enhanced versatility and cooling capabilities, appealing to more demanding users.
Which should you buy?
Choosing between the Lian Li A3-mATX-WD-26.3L and the Thermaltake Versa H21 ultimately depends on your specific needs and budget. If you are a gamer or PC enthusiast seeking superior cooling options, compatibility with larger components, and a unique design, the Lian Li A3 is worth the investment. However, if you are looking for a budget-friendly option that still offers a solid build and decent expansion capabilities, the Thermaltake Versa H21 is an excellent choice. Assess your priorities, and select the chassis that aligns best with your build requirements.
versusfinder.com is a participant in the Amazon.ca Associates Program. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

