Hardware Spec Index

Caldera PW-4477 Ti 550W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW4477-TI · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index902 (Power Supplies scale)
Category rank#3,403
Street price$39
Power550 W (rated)
Performance per dollar23.13
Released2020

Specifications

BrandCaldera
ModelCaldera PW-4477 Ti
Rated output550 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityFully modular
Fan140 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 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
Caldera PW-5328 Ti 1000W 80 PLUS Gold ATX 3.0 Power Supply2,273$199Compare
Vantrel PW-6000 Ultra 850W 80 PLUS Gold ATX 3.1 Power Supply1,212$69Compare
Vantrel PW-7622 Plus 1300W 80 PLUS Titanium ATX 3.0 Power Supply2,839$359Compare
Novexa PW-8428 Edge 850W 80 PLUS Gold ATX 3.1 Power Supply1,167$69Compare
Teralux PW-9287 Edge 850W 80 PLUS Gold SFX Power Supply1,609$139Compare
Zephyra PW-2231 Pro 1200W 80 PLUS Titanium ATX Power Supply2,587$279Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-4477 Ti 550W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/6042977 (accessed 2026-10-25).