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LIAN LI A3-mATX Black SPCC M-ATX / ITX Computer Case ------ A3-mATX-X
- Side and top panels are designed with steel mesh.
- PSU can be mounted at the front or beside the
- motherboard to create multiple and flexible configurations.
- Support up to 360MM radiator.
- Support M-ATX/ITX motherboard.
- Support ATX/SFX/SFX-L (Max 220mm) and LIAN LI Edge PSU.
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Overview
Specs
Reviews (88)
How does the Lian-Li A3-mATX M-ATX Micro Tower Computer Case redefine compact computing? This versatile M-ATX mesh PC case is engineered to accommodate large components while maintaining a minimal chassis size, making it a standout choice for enthusiasts who demand both performance and style. The innovative relocatable PSU bracket empowers you to build a powerful and compact PC system tailored to your specific needs and preferences.
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Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 1 year
- Limited Warranty period (labor): 1 year
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Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
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The LIAN LI A3-mATX is a compact black MicroATX/ITX computer case for builders who want flexible small-form-factor layouts with high-end component support, including GPUs up to 430 mm, CPU coolers up to 167 mm, and radiators up to 360 mm.
Recommended For
- PC builders who want a compact microATX system without giving up support for large graphics cards, ATX or SFX power supplies, and up to a 360 mm radiator.
- Experienced PC builders who are comfortable planning component clearances, PSU placement, radiator positioning, and cable routing before assembly.
- Gaming and workstation users who want a smaller desk footprint while retaining the expansion and component flexibility of a microATX platform.
- Users who are willing to tune fan placement and airflow for a compact high-performance build rather than expecting one fixed cooling layout to work equally well with every configuration.
Real-World Use Scenarios
- A gamer downsizing from a full-size ATX tower can build a compact mATX system with a high-end, full-length graphics card; the result is a smaller desk footprint without requiring a low-power GPU.
- A user building a compact 1440p or high-refresh gaming PC can pair the case with a performance mATX motherboard, large GPU, and multiple intake or exhaust fans; open mesh panels help provide direct airflow, but fan placement still needs to be planned around the GPU and power supply.
- A builder who wants liquid cooling in a relatively small case can install a 240mm, 280mm, or 360mm radiator in a supported position; the experience depends heavily on the motherboard, PSU location, radiator thickness, and tube routing.
- A builder using an ATX, SFX, or SFX-L power supply can choose a front or side mounting position to balance GPU clearance, radiator placement, and cable access; the flexible layout improves component choice but makes compatibility planning more important.
- A user assembling a compact workstation or gaming PC with frequent component changes can access major parts through the removable panels, but cable management and tight clearances may make the initial build and later upgrades slower than in a larger mid-tower.
Reference Q&A
Q: Lian Li A3-mATX vs ASUS Prime AP201: which case is better for a compact high-performance build?
A: Choose the A3-mATX when you want a smaller 26.3-liter chassis with more flexible PSU placement, support for ATX/SFX/SFX-L power supplies, and clearance for larger graphics cards. Choose the ASUS Prime AP201 when you prefer more storage flexibility, a 32 mm cable-management area, and a pre-installed rear fan. The A3-mATX is more adaptable for compact high-power builds, while the AP201 offers a more conventional microATX layout.
Q: Should I buy the Lian Li A3-mATX or the smaller Lian Li A4-H2O?
A: Choose the A4-H2O for maximum portability: it is an 11-liter Mini-ITX case designed for SFX or SFX-L power supplies, supports GPUs up to 322 mm, and uses a 55 mm CPU-cooler limit with a 240 mm radiator layout. Choose the A3-mATX when you need a MicroATX motherboard, an ATX power supply, taller air coolers, larger storage options, or a 360 mm radiator. The A4-H2O prioritizes volume reduction, while the A3-mATX provides broader component compatibility.
Q: Is the Lian Li A3-mATX suitable for a high-end GPU and CPU?
A: Yes, provided the build is planned around the PSU and cooling layout. The A3-mATX supports large four-slot-class graphics cards, CPU coolers up to approximately 165–167 mm depending on the specification source, and radiators up to 360 mm. Its relocatable PSU bracket allows builders to prioritize GPU clearance, radiator support, or cable space. Professional testing found that its thermal performance can remain competitive with larger cases, but GPU temperatures depend strongly on PSU position, bottom-fan clearance, and the selected graphics card.
Q: Is the Lian Li A3-mATX better than a normal mid-tower for a performance-focused PC?
A: Choose the A3-mATX when you want high-end component support in a substantially smaller MicroATX chassis. It supports ATX, SFX, and SFX-L power supplies, large GPUs, multiple radiator positions, and up to ten 120 mm fans. Choose a conventional mid-tower when you need more drive bays, easier cable routing, additional expansion room, or less configuration-sensitive assembly. The A3-mATX favors compact performance; a mid-tower favors installation space and expandability.
Q: Will my graphics card, CPU cooler, and power supply fit in the LIAN LI A3-mATX?
A: The case supports graphics cards up to 430 mm long, CPU coolers up to 167 mm tall, and power supplies up to 220 mm long. It supports ATX, SFX, SFX-L, and LIAN LI Edge PSU formats, but component dimensions should still be checked together with the selected cooling and PSU configuration.
Q: Can the LIAN LI A3-mATX use a 360 mm liquid-cooling radiator?
A: Yes. The case supports a 360 mm radiator on the top or side. It also supports 280 mm and 240 mm radiators in those positions, while the bottom supports up to a 280 mm or 240 mm radiator.
Q: How many fans come with the LIAN LI A3-mATX, and how many can it hold?
A: No fans are pre-installed. The case supports up to 10 fans: three 120 mm or two 140 mm fans on the top, side, and bottom, plus one 120 mm rear fan. Buyers should budget for separately purchased fans and choose an airflow layout appropriate for their components.
Q: Which motherboards and power supplies are compatible with the LIAN LI A3-mATX?
A: The case is designed for Micro ATX and Mini ITX motherboards. It supports ATX, SFX, SFX-L, and LIAN LI Edge power supplies, with a maximum PSU length of 220 mm. Its front or beside-the-motherboard PSU mounting options allow different layouts, but the selected motherboard, PSU, radiator, and GPU should be checked as one complete configuration.
Q: Who is the LIAN LI A3-mATX best suited for?
A: It is best suited for builders who want a compact Micro ATX or Mini ITX system with full-size component flexibility, including long graphics cards, tower CPU coolers, and up to a 360 mm radiator. It is less suitable for buyers seeking a ready-to-use case with included fans, a side window, or extensive drive capacity, because it includes no fans, has no side window, and provides one 3.5-inch and two 2.5-inch drive bays.