Hardware Spec Index

Caldera PW-4221 Prime 1300W 80 PLUS Platinum ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW4221-PRIME · Released 2024 · Updated 2026-10-20

Key facts

Benchmark index2,259 (Power Supplies scale)
Category rank#49,571
Street price$279
Power1300 W (rated)
Performance per dollar8.10
Released2024

Specifications

BrandCaldera
ModelCaldera PW-4221 Prime
Rated output1,300 W continuous
Efficiency80 PLUS Platinum (92% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin4×
Form factorATX
ModularityFully modular
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty12 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

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Cite this page: Hardware Spec Index, “Caldera PW-4221 Prime 1300W 80 PLUS Platinum ATX 3.1 Power Supply”, https://vextor7.com/item/7299161 (accessed 2026-10-20).