RTX 4090 Strix PCB breakdown notes (Patreon)

Input filtering bulk capacitance12x 270uF 16V TH aluminum polymer16x 56uF 16V SMD aluminum polymer

Vcore Controller: MP2891 12 phasesMOSFETs: 24x FDMF3170 70A SPS (2 per phase)1.2V 500KHz 150nH (power stages only scaled down from 1.8Vout)300A ~25W400A ~34W500A ~43W600A ~54W800A ~81WVcore VRM bulk capacitance14x 820uF 2.5V TH aluminum polymer35x 470uF 2V SMD aluminum polymerVcore core bulk capacitance4x 470uF SMD aluminum polymer2x 10x MLCC

Vmem Controller: MP2891 +4 phasesMOSFETs: 4x FDMF3170 70A SPS (1 per phase)Vmem bulk capacitance:18x 470uF SMD poly

Notes:Possibly the best RTX 4090 PCB in terms of voltage regulation. The memory output filtering especially is absolutely insane at close to 4x the capacitance of the FE PCB. Not the strongest in terms of current handling capability but not by much.