Hardware Spec Index

Zephyra PW-1811 Prime 550W 80 PLUS Gold ATX 3.1 Power Supply

Power Supplies · Zephyra · SKU PW1811-PRIME · Released 2025 · Updated 2026-10-19

Key facts

Benchmark index840 (Power Supplies scale)
Category rank#25,204
Street price$39
Power550 W (rated)
Performance per dollar21.54
Released2025

Specifications

BrandZephyra
ModelZephyra PW-1811 Prime
Rated output550 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin1×
Form factorATX
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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-9513 Ti 1200W 80 PLUS Titanium ATX 3.0 Power Supply2,326$219Compare
Novexa PW-1551 XT 750W 80 PLUS Bronze ATX 3.1 Power Supply1,129$59Compare
Novexa PW-8776 Ti 750W 80 PLUS Gold ATX Power Supply1,386$79Compare
Caldera PW-8696 Core 750W 80 PLUS Gold ATX Power Supply1,212$69Compare
Vantrel PW-2746 Max 750W 80 PLUS Bronze ATX Power Supply1,188$59Compare
Vantrel PW-7177 Ultra 1600W 80 PLUS Platinum ATX 3.1 Power Supply2,544$319Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-1811 Prime 550W 80 PLUS Gold ATX 3.1 Power Supply”, https://vextor7.com/item/10488672 (accessed 2026-10-19).