Caldera CS-9421 Ultra E-ATX full tower Case
PC Cases · Caldera · SKU CS9421-ULTRA · Released 2021 · Updated 2026-10-22
Key facts
| Benchmark index | 2,077 (PC Cases scale) |
|---|---|
| Category rank | #7,103 |
| Street price | $269 |
| Performance per dollar | 7.72 |
| Released | 2021 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera CS-9421 Ultra |
| Type | E-ATX full tower |
| Motherboard support | E-ATX, ATX, Micro-ATX, Mini-ITX |
| Volume | 87 L |
| Max GPU length | 461 mm |
| Max CPU cooler height | 190 mm |
| Radiator support | Top 360 mm, front 360/420 mm, rear 120 mm |
| Fans included | 3× 120 mm |
| Front I/O | 1× USB 3.2 Gen 2 Type-C, 2× USB 3.0, audio |
| PSU support | ATX (up to 220 mm) |
| Side panel | Steel mesh |
| Rear-connector boards | Not supported |
Related guides
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Cite this page: Hardware Spec Index, “Caldera CS-9421 Ultra E-ATX full tower Case”, https://vextor7.com/item/93484906 (accessed 2026-10-22).