Corsair Obsidian Series 450D High Airflow Mid-Tower Case. The Obsidian 450D is the ideal blend of solid, refined good looks and high performance cooling. In front of the two AF140L intake fans is an easily removed aluminum mesh dust filter that provides extraordinary airflow directly to your graphics cards and CPU cooler. On top of the case is room for up to a 360mm radiator, a rarity in mid-towers. Of course, it wouldnt be a Corsair case without well-known, easy-to-use features like tool-free drive mounts for SSDs and 3.5 drives, optical drives, and excellent cable routing. Whether you re looking for high airflow or potential for liquid cooking, the 450D had you covered.