Hardware Spec Index

Caldera PW-2890 Ultra 650W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW2890-ULTRA · Released 2019 · Updated 2026-10-26

Key facts

Benchmark index1,017 (Power Supplies scale)
Category rank#175
Street price$49
Power650 W (rated)
Performance per dollar20.76
Released2019

Specifications

BrandCaldera
ModelCaldera PW-2890 Ultra
Rated output650 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularitySemi-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
Vantrel PW-3657 Max 550W 80 PLUS Gold ATX 3.1 Power Supply1,209$59Compare
Novexa PW-1222 Ultra 1000W 80 PLUS Platinum ATX 3.0 Power Supply2,491$289Compare
Zephyra PW-4695 Ti 550W 80 PLUS Gold ATX Power Supply1,042$49Compare
Zephyra PW-1973 Pro 750W 80 PLUS Gold ATX 3.1 Power Supply1,320$79Compare
Vantrel PW-6049 Ultra 1000W 80 PLUS Gold ATX 3.1 Power Supply1,755$149Compare
Novexa PW-4307 XT 1000W 80 PLUS Gold ATX Power Supply2,478$309Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-2890 Ultra 650W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/6978573 (accessed 2026-10-26).