Hardware Spec Index

Caldera PW-4920 Ultra 550W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW4920-ULTRA · Released 2024 · Updated 2026-10-25

Key facts

Benchmark index805 (Power Supplies scale)
Category rank#22,055
Street price$39
Power550 W (rated)
Performance per dollar20.64
Released2024

Specifications

BrandCaldera
ModelCaldera PW-4920 Ultra
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
ModularitySemi-modular
Fan140 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
Teralux PW-9298 Prime 1600W 80 PLUS Titanium ATX 3.0 Power Supply2,900$369Compare
Teralux PW-8526 Core 850W 80 PLUS Gold ATX 3.1 Power Supply1,601$109Compare
Teralux PW-4926 Plus 1300W 80 PLUS Gold ATX 3.0 Power Supply2,381$229Compare
Caldera PW-4677 SE 1000W 80 PLUS Gold ATX 3.1 Power Supply2,324$239Compare
Zephyra PW-6741 Plus 1600W 80 PLUS Titanium ATX 3.0 Power Supply2,548$319Compare
Zephyra PW-4816 Plus 1300W 80 PLUS Platinum ATX 3.1 Power Supply2,552$289Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-4920 Ultra 550W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/6604761 (accessed 2026-10-25).