The be quiet! Pure Base 500DX wins in 4 out of 8 comparable specs. Its biggest advantage is 2.5" Bays (150% better).
4000D RS Frame wins in 1 spec.
Recommendation
Choose Pure Base 500DX if you want the best overall performance — especially 2.5" bays.
Choose 4000D RS Frame if you prefer this option.
| Spec | be quiet!Pure Base 500DX | Corsair4000D RS Frame |
|---|---|---|
| Design | ||
| Type | ATX Mid Tower | ATX Mid Tower |
| Side Panel | Tempered Glass | Tempered Glass |
| Weight | 8.5 | 8 |
| Compatibility | ||
| Max GPU Length | 369 mm | 370 mm |
| Max Cooler Height | 190 mm+12% | 170 mm |
| Max PSU Length | 220 mm+10% | 200 mm |
| Max Radiator |
| 360 mm |
| 360 mm |
| Motherboard Support | ATX, Micro ATX, Mini ITX | ATX, Micro ATX, Mini ITX |
| Cooling | ||
| Included Fans | 3 | 3 |
| Storage | ||
| 2.5" Bays | 5+150% | 2 |
| 3.5" Bays | 2 | 2 |
| I/O | ||
| Front I/O | 1x USB-C, 2x USB-A 3.0, Audio | 1x USB-C, 1x USB-A 3.0, Audio |
| Price | ||
| MSRP | $100−9% | $110 |
| Release Date | Feb 2020 | Jan 2025 |
