Hardware Spec Index

Caldera CS-3991 Ultra Micro-ATX tower Case

PC Cases · Caldera · SKU CS3991-ULTRA · Released 2022 · Updated 2026-10-22

Key facts

Benchmark index944 (PC Cases scale)
Category rank#6,439
Street price$69
Performance per dollar13.68
Released2022

Specifications

BrandCaldera
ModelCaldera CS-3991 Ultra
TypeMicro-ATX tower
Motherboard supportMicro-ATX, Mini-ITX
Volume36 L
Max GPU length364 mm
Max CPU cooler height160 mm
Radiator supportTop 360 mm, front 360/420 mm, rear 120 mm
Fans included4× 120 mm
Front I/O1× USB 3.2 Gen 2 Type-C, 2× USB 3.0, audio
PSU supportATX (up to 220 mm)
Side panelTempered glass
Rear-connector boardsNot supported

Related guides

AIO Liquid Cooling vs Air Cooling for CPUsChoosing a GPU for 4K Gaming

Similar PC Cases

ModelBenchmarkPriceCompare
Corvane CS-5591 Ti ATX mid tower Case1,054$69Compare
Zephyra CS-5072 Core ATX mid tower Case1,871$169Compare
Corvane CS-5970 Edge Micro-ATX tower Case684$49Compare
Caldera CS-9576 Ultra ATX mid tower Case960$69Compare
Caldera CS-7901 Pro E-ATX full tower Case2,557$309Compare
Solvane CS-8914 Ti ATX mid tower Case1,910$189Compare

All PC Cases · JSON

Cite this page: Hardware Spec Index, “Caldera CS-3991 Ultra Micro-ATX tower Case”, https://vextor7.com/item/80434530 (accessed 2026-10-22).