Hardware Spec Index

Vantrel PW-3891 Pro 850W 80 PLUS Gold SFX Power Supply

Power Supplies · Vantrel · SKU PW3891-PRO · Released 2025 · Updated 2026-10-25

Key facts

Benchmark index1,494 (Power Supplies scale)
Category rank#11,963
Street price$99
Power850 W (rated)
Performance per dollar15.09
Released2025

Specifications

BrandVantrel
ModelVantrel PW-3891 Pro
Rated output850 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin2×
Form factorSFX-L
ModularityFully modular
Fan120 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

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Cite this page: Hardware Spec Index, “Vantrel PW-3891 Pro 850W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/7967267 (accessed 2026-10-25).