Hardware Spec Index

Caldera CL-5911 Ultra 280mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL5911-ULTRA · Released 2025 · Updated 2026-10-25

Key facts

Benchmark index918 (CPU Coolers scale)
Category rank#30,218
Street price$29
Power13 W
Performance per dollar31.66
Released2025

Specifications

BrandCaldera
ModelCaldera CL-5911 Ultra
TypeAll-in-one liquid cooler
Radiator280 mm, aluminum, 27 mm thick
Fans2× 140 mm, up to 1,800 RPM
Pump2,900 RPM
Rated cooling280 W (manufacturer rating)
Noise33 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty6 years

Related guides

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Cite this page: Hardware Spec Index, “Caldera CL-5911 Ultra 280mm AIO Liquid CPU Cooler”, https://vextor7.com/item/2321022 (accessed 2026-10-25).