Hardware Spec Index

Zephyra PW-6821 Core 550W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Zephyra · SKU PW6821-CORE · Released 2024 · Updated 2026-10-26

Key facts

Benchmark index998 (Power Supplies scale)
Category rank#14,129
Street price$39
Power550 W (rated)
Performance per dollar25.59
Released2024

Specifications

BrandZephyra
ModelZephyra PW-6821 Core
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin1×
Form factorATX
ModularityNon-modular
Fan140 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
Vantrel PW-7208 Ultra 850W 80 PLUS Gold ATX 3.1 Power Supply1,842$139Compare
Novexa PW-4958 Ultra 1000W 80 PLUS Platinum ATX 3.1 Power Supply2,257$199Compare
Teralux PW-6426 Edge 1600W 80 PLUS Titanium ATX 3.0 Power Supply2,659$379Compare
Vantrel PW-2014 Edge 850W 80 PLUS Gold ATX 3.1 Power Supply1,784$139Compare
Caldera PW-1989 Max 550W 80 PLUS Gold ATX 3.1 Power Supply1,176$59Compare
Teralux PW-4376 Core 1000W 80 PLUS Gold ATX 3.0 Power Supply2,231$219Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-6821 Core 550W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/14966360 (accessed 2026-10-26).