Hardware Spec Index

Caldera PW-4976 XT 650W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW4976-XT · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index1,256 (Power Supplies scale)
Category rank#16,471
Street price$69
Power650 W (rated)
Performance per dollar18.20
Released2021

Specifications

BrandCaldera
ModelCaldera PW-4976 XT
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
Fan120 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-8482 Plus 550W 80 PLUS Bronze ATX 3.0 Power Supply954$39Compare
Vantrel PW-2322 XT 750W 80 PLUS Gold ATX Power Supply1,239$59Compare
Zephyra PW-9974 Max 850W 80 PLUS Gold ATX Power Supply1,709$129Compare
Novexa PW-8406 Ultra 850W 80 PLUS Gold ATX 3.0 Power Supply1,678$129Compare
Novexa PW-2830 Pro 850W 80 PLUS Platinum ATX 3.1 Power Supply1,907$159Compare
Teralux PW-2579 Core 1300W 80 PLUS Platinum ATX 3.0 Power Supply2,444$249Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-4976 XT 650W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/10360269 (accessed 2026-10-22).