Hardware Spec Index

Caldera CL-3921 Pro 240mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL3921-PRO · Released 2019 · Updated 2026-10-25

Key facts

Benchmark index940 (CPU Coolers scale)
Category rank#8,967
Street price$29
Power12 W
Performance per dollar32.41
Released2019

Specifications

BrandCaldera
ModelCaldera CL-3921 Pro
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 38 mm thick
Fans2× 120 mm, up to 1,900 RPM
Pump3,100 RPM
Rated cooling250 W (manufacturer rating)
Noise27 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM4, LGA1700, LGA1200, LGA115x
Warranty6 years

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Cite this page: Hardware Spec Index, “Caldera CL-3921 Pro 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/21755437 (accessed 2026-10-25).