Hardware Spec Index

Zephyra PW-5991 SE 550W 80 PLUS Gold ATX 3.0 Power Supply

Power Supplies · Zephyra · SKU PW5991-SE · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index1,102 (Power Supplies scale)
Category rank#19,047
Street price$49
Power550 W (rated)
Performance per dollar22.49
Released2023

Specifications

BrandZephyra
ModelZephyra PW-5991 SE
Rated output550 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin1×
Form factorATX
ModularityFully modular
Fan135 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
Zephyra PW-5175 XT 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,674$269Compare
Novexa PW-8989 Max 1600W 80 PLUS Titanium ATX 3.0 Power Supply2,775$389Compare
Caldera PW-5658 SE 850W 80 PLUS Gold ATX Power Supply1,432$89Compare
Teralux PW-4612 Plus 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,818$399Compare
Teralux PW-5339 Ultra 850W 80 PLUS Gold ATX 3.1 Power Supply1,446$99Compare
Caldera PW-3170 Core 1000W 80 PLUS Platinum SFX Power Supply2,195$229Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-5991 SE 550W 80 PLUS Gold ATX 3.0 Power Supply”, https://vextor7.com/item/12027273 (accessed 2026-10-22).