The Phanteks XT Pro Ultra wins in 6 out of 8 comparable specs. Its biggest advantage is Included Fans (100% better).
H510 Flow wins in 2 specs (3.5" Bays: 50% better).
Recommendation
Choose XT Pro Ultra if you want the best overall performance — especially included fans.
Choose H510 Flow if 3.5" bays matters more to you.
| Spec | NZXTH510 Flow | PhanteksXT Pro Ultra |
|---|---|---|
| Design | ||
| Type | ATX Mid Tower | ATX Mid Tower |
| Side Panel | Tempered Glass | Tempered Glass |
| Weight | 6.8 | 10.5 |
| Compatibility | ||
| Max GPU Length | 360 mm | 435 mm+21% |
| Max Cooler Height | 165 mm | 181 mm+10% |
| Max PSU Length | 200 mm | 220 mm+10% |
| Max Radiator | 280 mm | 420 mm+50% |
| Motherboard Support | ATX, Micro ATX, Mini ITX | ATX, EATX, Micro ATX, Mini ITX |
| Cooling | ||
| Included Fans | 2 | 4+100% |
| Storage | ||
| 2.5" Bays | 2 | 3+50% |
| 3.5" Bays | 3+50% | 2 |
| I/O | ||
| Front I/O | 1x USB-C, 1x USB-A 3.0, Audio | 1x USB-C, 2x USB-A 3.0, Audio |
| Price | ||
| MSRP | $85−50% | $170 |
| Release Date | Jun 2021 | Jul 2024 |
