Hardware Spec Index

Caldera PW-3228 Ultra 550W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW3228-ULTRA · Released 2026 · Updated 2026-10-26

Key facts

Benchmark index1,144 (Power Supplies scale)
Category rank#33,880
Street price$59
Power550 W (rated)
Performance per dollar19.39
Released2026

Specifications

BrandCaldera
ModelCaldera PW-3228 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
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-4687 Prime 850W 80 PLUS Gold SFX Power Supply1,734$139Compare
Teralux PW-4588 Pro 1300W 80 PLUS Titanium ATX Power Supply2,611$329Compare
Vantrel PW-6351 XT 850W 80 PLUS Gold ATX 3.0 Power Supply1,262$79Compare
Novexa PW-3761 Max 650W 80 PLUS Gold ATX Power Supply1,058$49Compare
Caldera PW-9560 Edge 850W 80 PLUS Gold ATX 3.1 Power Supply1,678$119Compare
Caldera PW-9632 Pro 750W 80 PLUS Bronze ATX 3.1 Power Supply961$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-3228 Ultra 550W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/7572215 (accessed 2026-10-26).