Hardware Spec Index

Caldera PW-4978 Ti 850W 80 PLUS Gold ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW4978-TI · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index1,195 (Power Supplies scale)
Category rank#17,384
Street price$59
Power850 W (rated)
Performance per dollar20.25
Released2025

Specifications

BrandCaldera
ModelCaldera PW-4978 Ti
Rated output850 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin2×
Form factorATX
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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
Teralux PW-9832 Plus 1200W 80 PLUS Gold ATX Power Supply2,434$259Compare
Vantrel PW-6857 Prime 850W 80 PLUS Gold SFX Power Supply1,277$69Compare
Caldera PW-2428 Max 550W 80 PLUS Bronze ATX 3.0 Power Supply877$39Compare
Zephyra PW-8354 Plus 750W 80 PLUS Gold SFX Power Supply1,046$59Compare
Vantrel PW-4031 Ti 1000W 80 PLUS Gold ATX 3.0 Power Supply1,687$139Compare
Caldera PW-5204 Edge 550W 80 PLUS Bronze ATX 3.0 Power Supply818$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-4978 Ti 850W 80 PLUS Gold ATX 3.1 Power Supply”, https://vextor7.com/item/20071925 (accessed 2026-10-20).