Caldera CS-4991 Ultra ATX dual-chamber mid tower Case
PC Cases · Caldera · SKU CS4991-ULTRA · Released 2020 · Updated 2026-10-25
Key facts
| Benchmark index | 1,829 (PC Cases scale) |
|---|---|
| Category rank | #46,505 |
| Street price | $189 |
| Performance per dollar | 9.68 |
| Released | 2020 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera CS-4991 Ultra |
| Type | ATX dual-chamber mid tower |
| Motherboard support | E-ATX (≤ 277 mm), ATX, Micro-ATX, Mini-ITX |
| Volume | 63 L |
| Max GPU length | 441 mm |
| Max CPU cooler height | 180 mm |
| Radiator support | Top 360 mm, front 360/420 mm, rear 120 mm |
| Fans included | 3× 140 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-4991 Ultra ATX dual-chamber mid tower Case”, https://vextor7.com/item/86521050 (accessed 2026-10-25).