Hardware Spec Index

Caldera PW-8550 Ultra 650W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW8550-ULTRA · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index1,292 (Power Supplies scale)
Category rank#23,976
Street price$69
Power650 W (rated)
Performance per dollar18.72
Released2019

Specifications

BrandCaldera
ModelCaldera PW-8550 Ultra
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
Fan140 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-6595 Max 1300W 80 PLUS Titanium ATX Power Supply2,864$349Compare
Novexa PW-2636 Pro 1000W 80 PLUS Platinum ATX 3.1 Power Supply2,080$159Compare
Caldera PW-5587 Edge 1000W 80 PLUS Platinum ATX 3.0 Power Supply1,978$199Compare
Teralux PW-3085 Plus 1000W 80 PLUS Titanium ATX 3.0 Power Supply2,479$229Compare
Teralux PW-9040 Core 550W 80 PLUS Gold ATX Power Supply1,156$49Compare
Vantrel PW-6360 Ultra 850W 80 PLUS Gold ATX 3.1 Power Supply1,652$129Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8550 Ultra 650W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/17519184 (accessed 2026-10-19).