Hardware Spec Index

Zephyra PW-4550 Pro 850W 80 PLUS Platinum ATX 3.0 Power Supply

Power Supplies · Zephyra · SKU PW4550-PRO · Released 2022 · Updated 2026-10-23

Key facts

Benchmark index2,040 (Power Supplies scale)
Category rank#37,879
Street price$199
Power850 W (rated)
Performance per dollar10.25
Released2022

Specifications

BrandZephyra
ModelZephyra PW-4550 Pro
Rated output850 W continuous
Efficiency80 PLUS Platinum (92% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin2×
Form factorATX
ModularityFully modular
Fan140 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-3810 Max 1300W 80 PLUS Titanium ATX 3.0 Power Supply2,849$389Compare
Zephyra PW-3875 Max 850W 80 PLUS Gold SFX Power Supply1,529$109Compare
Teralux PW-2734 SE 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,825$299Compare
Zephyra PW-2031 Ultra 1000W 80 PLUS Platinum ATX Power Supply1,876$149Compare
Teralux PW-3340 Core 750W 80 PLUS Gold ATX 3.0 Power Supply1,440$79Compare
Teralux PW-4454 Max 1300W 80 PLUS Titanium ATX Power Supply2,538$289Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-4550 Pro 850W 80 PLUS Platinum ATX 3.0 Power Supply”, https://vextor7.com/item/2338271 (accessed 2026-10-23).