The Lian Li Lancool 217 wins in 6 out of 8 comparable specs. Its biggest advantage is 2.5" Bays (200% better).
O11 Air Mini wins in 2 specs (3.5" Bays: 100% better).
Recommendation
Choose Lancool 217 if you want the best overall performance — especially 2.5" bays.
Choose O11 Air Mini if 3.5" bays matters more to you.
| Spec | Lian LiLancool 217 | Lian LiO11 Air Mini |
|---|---|---|
| Design | ||
| Type | ATX Full Tower | ATX Mid Tower |
| Side Panel | Tempered Glass | Tempered Glass |
| Weight | 12.6 | 7.5 |
| Compatibility | ||
| Max GPU Length | 421 mm+16% | 362 mm |
| Max Cooler Height | 178 mm+15% | 155 mm |
| Max PSU Length | 210 mm+17% | 180 mm |
| Max Radiator | 420 mm+50% | 280 mm |
| Motherboard Support | ATX, EATX, Micro ATX, Mini ITX | ATX, EATX, Micro ATX, Mini ITX |
| Cooling | ||
| Included Fans | 4+33% | 3 |
| Storage | ||
| 2.5" Bays | 6+200% | 2 |
| 3.5" Bays | 2 | 4+100% |
| I/O | ||
| Front I/O | 1x USB-C, 2x USB-A 3.0, Audio | 1x USB-C, 2x USB-A 3.0, Audio |
| Price | ||
| MSRP | $150 | $110−27% |
| Release Date | Jun 2023 | Sep 2021 |
