Hardware Spec Index

Caldera PW-2778 Prime 650W 80 PLUS Gold ATX 3.0 Power Supply

Power Supplies · Caldera · SKU PW2778-PRIME · Released 2023 · Updated 2026-10-20

Key facts

Benchmark index1,330 (Power Supplies scale)
Category rank#47,132
Street price$79
Power650 W (rated)
Performance per dollar16.84
Released2023

Specifications

BrandCaldera
ModelCaldera PW-2778 Prime
Rated output650 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin1×
Form factorATX
ModularityFully modular
Fan140 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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
Novexa PW-4405 SE 850W 80 PLUS Gold SFX Power Supply1,432$99Compare
Caldera PW-5358 Ultra 850W 80 PLUS Gold SFX Power Supply1,772$129Compare
Caldera PW-1618 Ultra 850W 80 PLUS Gold ATX 3.1 Power Supply1,760$129Compare
Teralux PW-9926 Plus 850W 80 PLUS Gold ATX 3.0 Power Supply1,216$69Compare
Caldera PW-1145 Ti 750W 80 PLUS Gold ATX 3.0 Power Supply1,249$59Compare
Teralux PW-2918 Prime 1600W 80 PLUS Titanium ATX Power Supply2,820$399Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-2778 Prime 650W 80 PLUS Gold ATX 3.0 Power Supply”, https://vextor7.com/item/78597 (accessed 2026-10-20).