Hardware Spec Index

Caldera CS-4391 Ultra ATX dual-chamber mid tower Case

PC Cases · Caldera · SKU CS4391-ULTRA · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index2,347 (PC Cases scale)
Category rank#42,727
Street price$299
Performance per dollar7.85
Released2021

Specifications

BrandCaldera
ModelCaldera CS-4391 Ultra
TypeATX dual-chamber mid tower
Motherboard supportE-ATX (≤ 277 mm), ATX, Micro-ATX, Mini-ITX
Volume66 L
Max GPU length438 mm
Max CPU cooler height180 mm
Radiator supportTop 360 mm, front 360/420 mm, rear 120 mm
Fans includedNone
Front I/O1× USB 3.2 Gen 2 Type-C, 2× USB 3.0, audio
PSU supportATX (up to 220 mm)
Side panelSteel mesh
Rear-connector boardsNot supported

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Cite this page: Hardware Spec Index, “Caldera CS-4391 Ultra ATX dual-chamber mid tower Case”, https://vextor7.com/item/1396751 (accessed 2026-10-19).