Hardware Spec Index

Caldera PW-4917 Ultra 850W 80 PLUS Gold SFX Power Supply

Power Supplies · Caldera · SKU PW4917-ULTRA · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index1,528 (Power Supplies scale)
Category rank#40,220
Street price$109
Power850 W (rated)
Performance per dollar14.02
Released2021

Specifications

BrandCaldera
ModelCaldera PW-4917 Ultra
Rated output850 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin3×
Form factorSFX-L
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-5735 Plus 1200W 80 PLUS Titanium ATX 3.0 Power Supply2,474$289Compare
Vantrel PW-7525 Prime 1300W 80 PLUS Titanium ATX 3.0 Power Supply2,697$309Compare
Vantrel PW-3994 SE 1000W 80 PLUS Gold ATX Power Supply2,296$259Compare
Novexa PW-8834 Pro 1000W 80 PLUS Gold ATX 3.1 Power Supply1,875$129Compare
Vantrel PW-3875 Max 650W 80 PLUS Bronze ATX Power Supply839$39Compare
Novexa PW-9526 Pro 750W 80 PLUS Bronze SFX Power Supply1,063$49Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-4917 Ultra 850W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/94824766 (accessed 2026-10-24).