Hardware Spec Index

Caldera PW-7981 Max 550W 80 PLUS Gold SFX Power Supply

Power Supplies · Caldera · SKU PW7981-MAX · Released 2019 · Updated 2026-10-23

Key facts

Benchmark index820 (Power Supplies scale)
Category rank#438
Street price$39
Power550 W (rated)
Performance per dollar21.03
Released2019

Specifications

BrandCaldera
ModelCaldera PW-7981 Max
Rated output550 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorSFX-L
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 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
Caldera PW-6103 Ti 1600W 80 PLUS Titanium ATX 3.0 Power Supply2,980$359Compare
Caldera PW-5399 SE 1000W 80 PLUS Gold SFX Power Supply2,065$209Compare
Teralux PW-7431 Ti 850W 80 PLUS Gold ATX 3.0 Power Supply1,443$79Compare
Vantrel PW-7448 SE 750W 80 PLUS Gold ATX 3.0 Power Supply1,382$69Compare
Novexa PW-9137 Ultra 1000W 80 PLUS Gold ATX Power Supply2,094$209Compare
Zephyra PW-5588 SE 1000W 80 PLUS Gold ATX Power Supply1,683$129Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-7981 Max 550W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/3213649 (accessed 2026-10-23).