Hardware Spec Index

Caldera PW-6390 Ultra 650W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW6390-ULTRA · Released 2019 · Updated 2026-10-27

Key facts

Benchmark index1,055 (Power Supplies scale)
Category rank#4,399
Street price$49
Power650 W (rated)
Performance per dollar21.53
Released2019

Specifications

BrandCaldera
ModelCaldera PW-6390 Ultra
Rated output650 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityFully modular
Fan135 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-8926 XT 750W 80 PLUS Gold ATX 3.0 Power Supply1,284$79Compare
Teralux PW-2004 Pro 1200W 80 PLUS Gold ATX Power Supply2,017$209Compare
Vantrel PW-9215 Plus 850W 80 PLUS Gold ATX Power Supply1,432$99Compare
Novexa PW-4415 Max 750W 80 PLUS Gold SFX Power Supply1,337$69Compare
Zephyra PW-3504 XT 1000W 80 PLUS Platinum ATX Power Supply2,205$199Compare
Teralux PW-8702 XT 750W 80 PLUS Bronze ATX 3.1 Power Supply1,027$49Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-6390 Ultra 650W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/471537 (accessed 2026-10-27).