Hardware Spec Index

Caldera CL-4321 Ultra 240mm AIO Liquid CPU Cooler

CPU Coolers · Caldera · SKU CL4321-ULTRA · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index947 (CPU Coolers scale)
Category rank#36,406
Street price$29
Power12 W
Performance per dollar32.66
Released2025

Specifications

BrandCaldera
ModelCaldera CL-4321 Ultra
TypeAll-in-one liquid cooler
Radiator240 mm, aluminum, 27 mm thick
Fans2× 120 mm, up to 2,300 RPM
Pump2,800 RPM
Rated cooling250 W (manufacturer rating)
Noise28 dBA (max)
Tubing400 mm, sleeved EPDM
Socket supportAM5, AM4, LGA1851, LGA1700
Warranty5 years

Related guides

AIO Liquid Cooling vs Air Cooling for CPUsCPU TDP, PPT and Turbo Power ExplainedAMD AM5 SocketIntel LGA1851 Socket

Similar CPU Coolers

ModelBenchmarkPriceCompare
Teralux CL-7103 SE 360mm AIO Liquid CPU Cooler1,496$79Compare
Brontix CL-2477 Plus 420mm AIO Liquid CPU Cooler2,256$199Compare
Caldera CL-3895 Pro Dual tower Air CPU Cooler2,212$189Compare
Brontix CL-8180 SE 240mm AIO Liquid CPU Cooler766$19Compare
Teralux CL-3776 SE 420mm AIO Liquid CPU Cooler1,851$109Compare
Zephyra CL-8725 Ultra Dual tower Air CPU Cooler1,731$99Compare

All CPU Coolers · JSON

Cite this page: Hardware Spec Index, “Caldera CL-4321 Ultra 240mm AIO Liquid CPU Cooler”, https://vextor7.com/item/13601072 (accessed 2026-10-20).