Hardware Spec Index

Zephyra PW-7821 Ti 550W 80 PLUS Bronze ATX 3.0 Power Supply

Power Supplies · Zephyra · SKU PW7821-TI · Released 2023 · Updated 2026-10-21

Key facts

Benchmark index1,191 (Power Supplies scale)
Category rank#9,780
Street price$59
Power550 W (rated)
Performance per dollar20.19
Released2023

Specifications

BrandZephyra
ModelZephyra PW-7821 Ti
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin1×
Form factorATX
ModularityNon-modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty5 years

Related guides

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

Similar Power Supplies

ModelBenchmarkPriceCompare
Teralux PW-2425 Edge 1200W 80 PLUS Gold ATX 3.1 Power Supply2,079$189Compare
Vantrel PW-8437 Prime 550W 80 PLUS Gold ATX 3.1 Power Supply887$39Compare
Teralux PW-1789 SE 550W 80 PLUS Bronze ATX 3.0 Power Supply831$39Compare
Caldera PW-9894 Prime 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,769$379Compare
Zephyra PW-4937 Ti 1600W 80 PLUS Titanium ATX Power Supply2,744$379Compare
Caldera PW-3383 Core 550W 80 PLUS Bronze ATX 3.1 Power Supply1,145$59Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-7821 Ti 550W 80 PLUS Bronze ATX 3.0 Power Supply”, https://vextor7.com/item/5332597 (accessed 2026-10-21).