Hardware Spec Index

Caldera PW-6921 Max 550W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW6921-MAX · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index859 (Power Supplies scale)
Category rank#18,202
Street price$39
Power550 W (rated)
Performance per dollar22.03
Released2025

Specifications

BrandCaldera
ModelCaldera PW-6921 Max
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
ModularitySemi-modular
Fan140 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
Teralux PW-4794 Ti 1300W 80 PLUS Platinum ATX Power Supply2,644$299Compare
Vantrel PW-6695 XT 850W 80 PLUS Gold SFX Power Supply1,525$99Compare
Novexa PW-1080 Pro 1000W 80 PLUS Platinum ATX 3.1 Power Supply2,211$179Compare
Caldera PW-2458 Ti 650W 80 PLUS Gold ATX 3.0 Power Supply1,048$49Compare
Vantrel PW-2580 SE 850W 80 PLUS Gold ATX 3.1 Power Supply1,696$139Compare
Zephyra PW-5702 SE 850W 80 PLUS Gold SFX Power Supply1,721$129Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-6921 Max 550W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/7597112 (accessed 2026-10-24).