Hardware Spec Index

Caldera PW-1590 Ultra 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW1590-ULTRA · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index887 (Power Supplies scale)
Category rank#45,558
Street price$39
Power550 W (rated)
Performance per dollar22.74
Released2021

Specifications

BrandCaldera
ModelCaldera PW-1590 Ultra
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularitySemi-modular
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty7 years

Related guides

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

Similar Power Supplies

ModelBenchmarkPriceCompare
Vantrel PW-1539 Prime 550W 80 PLUS Bronze SFX Power Supply1,079$59Compare
Caldera PW-8040 Ti 1300W 80 PLUS Titanium ATX 3.0 Power Supply2,918$399Compare
Zephyra PW-2194 Ultra 1300W 80 PLUS Platinum ATX 3.1 Power Supply2,594$309Compare
Zephyra PW-3437 Prime 550W 80 PLUS Bronze ATX 3.0 Power Supply859$39Compare
Novexa PW-5064 Edge 750W 80 PLUS Gold ATX 3.1 Power Supply1,519$109Compare
Zephyra PW-7314 Edge 550W 80 PLUS Bronze ATX 3.1 Power Supply1,178$59Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-1590 Ultra 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/14512693 (accessed 2026-10-24).