Hardware Spec Index

Caldera PW-4280 Max 550W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW4280-MAX · Released 2024 · Updated 2026-10-25

Key facts

Benchmark index999 (Power Supplies scale)
Category rank#37,429
Street price$59
Power550 W (rated)
Performance per dollar16.93
Released2024

Specifications

BrandCaldera
ModelCaldera PW-4280 Max
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin1×
Form factorATX
ModularityNon-modular
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty5 years

Related guides

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

Similar Power Supplies

ModelBenchmarkPriceCompare
Zephyra PW-4186 Max 850W 80 PLUS Gold ATX Power Supply1,286$69Compare
Zephyra PW-3718 XT 550W 80 PLUS Bronze ATX Power Supply759$39Compare
Caldera PW-8403 Max 1000W 80 PLUS Gold ATX Power Supply1,734$129Compare
Zephyra PW-5462 Ti 650W 80 PLUS Gold ATX Power Supply965$39Compare
Novexa PW-8078 Ultra 550W 80 PLUS Bronze SFX Power Supply811$39Compare
Vantrel PW-6603 XT 750W 80 PLUS Bronze ATX Power Supply1,074$59Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-4280 Max 550W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/46560819 (accessed 2026-10-25).