A cooling-optimized case design requires three things: good passive ventilation, flexible fan mounting options for good airflow, and the room to add sophisticated active cooling systems. The Obsidian Series 900D starts with a clear airflow path from the intake fans to the case interior, with no drives in the way. But, that’s just the start.

• Includes three AF120L 120mm front intake fans and one AF140L 140mm rear exhaust fan
• 15 total fan mount locations
• Five radiator mounting points
• Four removable dust filters

System builds should be straightforward and easy, without your PC case getting in the way. And, reconfigurations and upgrades should be just as simple. An enjoyable build process with great-looking results is a huge part of the pride of ownership that comes with building high-performance PCs.

The 900D can help make it all happen with tool-free side panel access, hard drive installation, and optical drive installation. Inside, you’ll find a CPU backplate cutout and rubber grommets on the cable routing holes. There’s generous cable routing space behind the motherboard tray, and snap-down cable latches help you create clean, easy-to-modify cabling that doesn’t rely on dozens of zip ties.

You also get modular hard drive cages, and the dust filters and fan covers are easily removable for cleaning and maintenance.

Let the beginners use cases that look like they’re going to turn into a giant robot. Obsidian Series 900D is built on a steel and cast aluminum frame, with solid steel panels and a fully painted interior. The brushed aluminum fascia resists scratches and fingerprints, and it’s just plain fun to put your hands on it.