Hardware Spec Index

Caldera PW-3921 XT 850W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW3921-XT · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index1,333 (Power Supplies scale)
Category rank#43,675
Street price$69
Power850 W (rated)
Performance per dollar19.32
Released2019

Specifications

BrandCaldera
ModelCaldera PW-3921 XT
Rated output850 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin3×
Form factorATX
ModularityNon-modular
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty10 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

Similar Power Supplies

ModelBenchmarkPriceCompare
Teralux PW-6701 Core 850W 80 PLUS Gold ATX 3.0 Power Supply1,441$89Compare
Zephyra PW-4221 Core 750W 80 PLUS Bronze ATX 3.0 Power Supply1,122$49Compare
Vantrel PW-8945 Pro 550W 80 PLUS Gold ATX 3.1 Power Supply1,127$59Compare
Teralux PW-9044 Edge 1600W 80 PLUS Platinum ATX Power Supply2,653$369Compare
Vantrel PW-5271 Edge 550W 80 PLUS Bronze ATX 3.1 Power Supply919$49Compare
Novexa PW-3197 XT 850W 80 PLUS Gold ATX 3.1 Power Supply1,623$119Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-3921 XT 850W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/1736742 (accessed 2026-10-21).