Largest PC Case (Best Pick): Corsair Obsidian Series 1000D
Now, there are a couple of chassis picks further below that are a tad larger in terms of external dimensions. But in terms of internal space and capability? The 1000D is comfortably my top pick for super tower gaming or high-scale production use.
Featured multiple times on WIT, the 1000D is an absolute powerhouse. Its build quality has one of the slickest and sturdiest combinations of thick steel, aluminum, and tempered glass I’ve ever seen. It’s a case that is not done justice by stock photos. Only once powered on with beautiful internal components on display it’s stunning to behold. I’ve had the pleasure of reviewing many 1000D builds and even the most basic look incredible.
The crowning feature of the 1000D (aside from its excellent cooling, which we’ll discuss later) is that it’s a dual-system PC case. This means it supports an independent Mini ITX motherboard/PC alongside your main setup (in other words, 2 PCs inside the same chassis!). There’s a lot of potential utility for premium work/gaming builders with this, and great for content-focused streamers who can they enjoy separate dedicated gaming and streaming setups.
Inside this super tower is room for:
- 10 x expansion slots
- GPU length clearance up to 400mm (enough for any mainstream card with room to spare for airflow, one of the best PC cases for RTX 3090 builds)
- A great front I/O panel, with 2 x USB 3.1 gen-2 type C USB ports amongst the classic inputs (all beautifully backlit with RGB)
- Accessible but nicely hidden bays for up to 5 x 3.5″ & 6 x 3.5″ drives
- Up to 18 x 120mm fans (stock configuration up to 10 x 120mm + 3 x 140mm)
- Or up to 4 x 480mm + 1 x 240mm radiators (stock configuration up to 2 x 480mm, 1 x 420mm + 1 x 240mm)
- Triple-chamber layout to maximize cable management and airflow of both the main and secondary systems (as well as room to hide “uglier” components like PSUs)
- Included smart fan controller if you want to add RGB fans to your build