Hardware Spec Index

Caldera PW-8857 Ti 550W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW8857-TI · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index837 (Power Supplies scale)
Category rank#35,694
Street price$39
Power550 W (rated)
Performance per dollar21.46
Released2021

Specifications

BrandCaldera
ModelCaldera PW-8857 Ti
Rated output550 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityFully modular
Fan135 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
Zephyra PW-1873 Prime 850W 80 PLUS Gold ATX Power Supply1,572$89Compare
Zephyra PW-4915 Pro 850W 80 PLUS Gold ATX 3.0 Power Supply1,491$99Compare
Novexa PW-8003 Ultra 1200W 80 PLUS Gold ATX 3.1 Power Supply2,235$219Compare
Novexa PW-8580 Prime 1000W 80 PLUS Gold SFX Power Supply2,068$199Compare
Zephyra PW-2409 Ultra 1200W 80 PLUS Titanium ATX Power Supply2,517$329Compare
Vantrel PW-6884 Ultra 1200W 80 PLUS Gold ATX 3.1 Power Supply2,292$209Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8857 Ti 550W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/199659 (accessed 2026-10-19).