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FormD T1 vs Lian Li A3 mATX: Comparison
FormD T1 and Lian Li A3 mATX separate most on cpu cooler clearance: FormD T1 at 71, Lian Li A3 mATX at 165, 57% in favour of Lian Li A3 mATX. GPU Clearance splits them by another 7%, again favouring Lian Li A3 mATX. They match on included fans and front usb-c.
Specs
| Specification | ![]() | ![]() |
|---|---|---|
| Motherboard Support | Mini-ITX | Micro-ATX, Mini-ITX |
| Case Type | SFF / Mini-ITX | Micro-ATX Tower |
| Panel Type | CNC-milled solid aluminum panels | Interchangeable mesh or tempered glass panels |
| GPU Clearance | 312-7% | 335 |
| CPU Cooler Clearance | 71-57% | 165 |
| Included Fans | 0 | 0 |
| Radiator Support | Side up to 240mm (panel swap required) | Front 240/280mm, Top 240mm |
| Front USB-C | true | true |
Price comparison
| Retailer | FormD T1 | Lian Li A3 mATX |
|---|---|---|
| FormD | View on FormD | |
| SFF Network | View on SFF Network | |
| Lian Li | View on Lian Li |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
FormD T1
8 / 10 Expert Rating
A cult favorite for a reason, just go in knowing you're buying a shell, not a complete kit.
Lian Li A3 mATX
8 / 10 Expert Rating
A genuinely well thought-out compact case, best suited to a mATX build that still wants room for a full-size GPU and cooler.




