The Lian Li O11 Dynamic EVO wins in 4 out of 8 comparable specs. Its biggest advantage is 3.5" Bays (100% better).
H9 Flow wins in 3 specs (Included Fans: 100% better).
Recommendation
Choose O11 Dynamic EVO if you want the best overall performance — especially 3.5" bays.
Choose H9 Flow if included fans matters more to you.
| Spec | Lian LiO11 Dynamic EVO | NZXTH9 Flow |
|---|---|---|
| Design | ||
| Type | ATX Mid Tower | ATX Mid Tower |
| Side Panel | Tempered Glass | Tempered Glass |
| Weight | 12 | 10.2 |
| Compatibility | ||
| Max GPU Length | 423 mm | 435 mm+3% |
| Max Cooler Height | 167 mm+1% | 165 mm |
| Max PSU Length | 210 mm+14% | 185 mm |
| Max Radiator | 360 mm | 360 mm |
| Motherboard Support | ATX, EATX, Micro ATX, Mini ITX | ATX, Micro ATX, Mini ITX |
| Cooling | ||
| Included Fans | 0 | 4+100% |
| Storage | ||
| 2.5" Bays | 6+50% | 4 |
| 3.5" Bays | 4+100% | 2 |
| 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 | $170 | $165−3% |
| Release Date | Feb 2022 | Jan 2023 |
