Hardware Spec Index

Caldera PW-1851 Ultra 1000W 80 PLUS Platinum ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW1851-ULTRA · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index2,196 (Power Supplies scale)
Category rank#8,499
Street price$209
Power1000 W (rated)
Performance per dollar10.51
Released2025

Specifications

BrandCaldera
ModelCaldera PW-1851 Ultra
Rated output1,000 W continuous
Efficiency80 PLUS Platinum (92% 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
Fan120 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
Zephyra PW-8362 Edge 550W 80 PLUS Gold ATX Power Supply1,113$59Compare
Zephyra PW-7441 Plus 1000W 80 PLUS Gold ATX 3.0 Power Supply2,374$219Compare
Teralux PW-2030 Core 750W 80 PLUS Gold ATX Power Supply1,230$69Compare
Caldera PW-7239 Ultra 1600W 80 PLUS Titanium ATX 3.0 Power Supply2,741$309Compare
Caldera PW-4588 XT 850W 80 PLUS Gold SFX Power Supply1,480$89Compare
Teralux PW-4409 Prime 850W 80 PLUS Gold ATX 3.1 Power Supply1,770$129Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-1851 Ultra 1000W 80 PLUS Platinum ATX 3.1 Power Supply”, https://vextor7.com/item/1293752 (accessed 2026-10-20).