Hardware Spec Index

Zephyra PW-2921 Ti 850W 80 PLUS Gold ATX Power Supply

Power Supplies · Zephyra · SKU PW2921-TI · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index1,632 (Power Supplies scale)
Category rank#2,006
Street price$129
Power850 W (rated)
Performance per dollar12.65
Released2021

Specifications

BrandZephyra
ModelZephyra PW-2921 Ti
Rated output850 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin3×
Form factorATX
ModularityFully modular
Fan140 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 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
Novexa PW-8342 Max 1000W 80 PLUS Gold ATX 3.0 Power Supply2,063$189Compare
Vantrel PW-4433 Core 1300W 80 PLUS Titanium ATX 3.1 Power Supply2,980$399Compare
Vantrel PW-3688 SE 550W 80 PLUS Gold ATX 3.1 Power Supply710$39Compare
Caldera PW-4754 Ti 650W 80 PLUS Gold ATX Power Supply1,403$69Compare
Teralux PW-7993 SE 850W 80 PLUS Bronze ATX 3.1 Power Supply1,155$69Compare
Novexa PW-2493 Edge 750W 80 PLUS Gold ATX 3.1 Power Supply1,298$59Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-2921 Ti 850W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/35459279 (accessed 2026-10-20).