Caldera CL-1821 Prime 420mm AIO Liquid CPU Cooler
CPU Coolers · Caldera · SKU CL1821-PRIME · Released 2022 · Updated 2026-10-22
Key facts
| Benchmark index | 2,480 (CPU Coolers scale) |
|---|---|
| Category rank | #40,279 |
| Street price | $169 |
| Power | 17 W |
| Performance per dollar | 14.67 |
| Released | 2022 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera CL-1821 Prime |
| Type | All-in-one liquid cooler |
| Radiator | 420 mm, aluminum, 27 mm thick |
| Fans | 3× 140 mm, up to 1,900 RPM |
| Pump | 2,800 RPM |
| Rated cooling | 330 W (manufacturer rating) |
| Noise | 35 dBA (max) |
| Tubing | 400 mm, sleeved EPDM |
| Socket support | AM5, AM4, LGA1851, LGA1700 |
| Warranty | 5 years |
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Cite this page: Hardware Spec Index, “Caldera CL-1821 Prime 420mm AIO Liquid CPU Cooler”, https://vextor7.com/item/4865636 (accessed 2026-10-22).