Hardware Spec Index

Caldera PW-7921 Pro 650W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW7921-PRO · Released 2020 · Updated 2026-10-24

Key facts

Benchmark index792 (Power Supplies scale)
Category rank#8,224
Street price$39
Power650 W (rated)
Performance per dollar20.31
Released2020

Specifications

BrandCaldera
ModelCaldera PW-7921 Pro
Rated output650 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityNon-modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 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
Novexa PW-2584 Max 1600W 80 PLUS Platinum ATX 3.1 Power Supply2,980$379Compare
Zephyra PW-2275 Max 850W 80 PLUS Gold ATX 3.1 Power Supply1,707$129Compare
Zephyra PW-2664 Edge 850W 80 PLUS Bronze SFX Power Supply1,359$89Compare
Novexa PW-9898 Pro 1000W 80 PLUS Gold ATX 3.1 Power Supply1,857$149Compare
Novexa PW-3786 SE 850W 80 PLUS Gold ATX 3.0 Power Supply1,619$119Compare
Teralux PW-5424 Edge 1600W 80 PLUS Titanium ATX Power Supply2,928$329Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-7921 Pro 650W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/9943741 (accessed 2026-10-24).