Will it fit · CPU cooler
Yes
The Thermalright Peerless Assassin 120 SE is 155 mm tall and the Corsair 4000D Airflow takes air coolers up to 170 mm (15 mm to spare).
| Case's max cooler height | 170 mm |
|---|---|
| Thermalright Peerless Assassin 120 SE height | 155 mm |
| Room left | 15 mm |
| Case type | mid tower |
Case limits from the maker's spec sheet (checked 2026-10-15).
Yes. The Thermalright Peerless Assassin 120 SE is 155 mm tall and the Corsair 4000D Airflow takes air coolers up to 170 mm (15 mm to spare).
170 mm for air coolers, and radiators up to 360 mm (280 mm on top).
