Hardware Spec Index

Caldera CL-9903 Pro 420mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL9903-PRO · Released 2022 · Updated 2026-10-20

Key facts

Benchmark index2,357 (CPU Coolers scale)
Category rank#35,893
Street price$199
Power17 W
Performance per dollar11.84
Released2022

Specifications

BrandCaldera
ModelCaldera CL-9903 Pro
TypeAll-in-one liquid cooler
Radiator420 mm, aluminum, 30 mm thick
Fans3× 140 mm, up to 1,500 RPM
Pump3,200 RPM
Rated cooling330 W (manufacturer rating)
Noise24 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty5 years

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Cite this page: Hardware Spec Index, “Caldera CL-9903 Pro 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/69729151 (accessed 2026-10-20).