Hardware Spec Index

Caldera PW-8503 Ultra 1200W 80 PLUS Titanium ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW8503-ULTRA · Released 2026 · Updated 2026-10-25

Key facts

Benchmark index2,655 (Power Supplies scale)
Category rank#15,020
Street price$319
Power1200 W (rated)
Performance per dollar8.32
Released2026

Specifications

BrandCaldera
ModelCaldera PW-8503 Ultra
Rated output1,200 W continuous
Efficiency80 PLUS Titanium (94% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin3×
Form factorATX
ModularityFully modular
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty10 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

Similar Power Supplies

ModelBenchmarkPriceCompare
Vantrel PW-7060 XT 1200W 80 PLUS Platinum ATX 3.1 Power Supply2,444$289Compare
Vantrel PW-1073 Prime 550W 80 PLUS Bronze ATX 3.0 Power Supply808$39Compare
Novexa PW-9347 Ti 750W 80 PLUS Bronze ATX Power Supply1,338$79Compare
Vantrel PW-6012 SE 1300W 80 PLUS Titanium ATX Power Supply2,881$399Compare
Zephyra PW-2795 Prime 850W 80 PLUS Gold SFX Power Supply1,397$89Compare
Vantrel PW-5466 Max 850W 80 PLUS Gold ATX Power Supply1,789$129Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8503 Ultra 1200W 80 PLUS Titanium ATX 3.1 Power Supply”, https://vextor7.com/item/30038309 (accessed 2026-10-25).