Hardware Spec Index

Caldera PW-1851 Pro 650W 80 PLUS Bronze SFX Power Supply

Power Supplies · Caldera · SKU PW1851-PRO · Released 2019 · Updated 2026-10-22

Key facts

Benchmark index973 (Power Supplies scale)
Category rank#31,845
Street price$49
Power650 W (rated)
Performance per dollar19.86
Released2019

Specifications

BrandCaldera
ModelCaldera PW-1851 Pro
Rated output650 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorSFX-L
ModularitySemi-modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 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
Caldera PW-2675 Core 650W 80 PLUS Bronze SFX Power Supply780$39Compare
Zephyra PW-5201 Prime 650W 80 PLUS Bronze ATX 3.0 Power Supply746$39Compare
Novexa PW-7555 SE 850W 80 PLUS Gold ATX 3.0 Power Supply1,851$149Compare
Caldera PW-8986 Ti 1000W 80 PLUS Platinum ATX 3.1 Power Supply2,019$179Compare
Novexa PW-2140 Ti 750W 80 PLUS Gold ATX 3.1 Power Supply1,588$89Compare
Caldera PW-6851 Edge 850W 80 PLUS Bronze SFX Power Supply1,310$59Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-1851 Pro 650W 80 PLUS Bronze SFX Power Supply”, https://vextor7.com/item/845260 (accessed 2026-10-22).