Gigabyte RTX 4090 Master PCB Breakdown Notes (Patreon)

Dual BIOS

Input filtering bulk capacitance20x 100uF Tant SMD9x 270uF TH poly

VcoreController: UP9512 8 phaseMOSFETs: 24x SiC653A 50A PS+OCP OTP HSSCP (3 per phase)1V 500KHz 150nH (SiC632 used for calculations)300A ~24W400A ~36W500A ~48W600A ~63W800A ~113WVcore VRM bulk capacitance:48x 470uF  // that's A LOOOOT of SMD polymersVcore core bulk capacitance:4x 560uF SMD poly // usually you only 220-470uF here2x 10x MLCC

VmemController: UP9512 4 phaseMOSFETs: 4x SiC653A 50A PS+OCP OTP HSSCP (1 per phase)Vmem bulk capacitance:10x 330uF SMD poly // standard for 4090s

Overall: Kind of a brute force approach to an RTX 4090 PCB. I kinda like it. Probably not too far of the HOF, SuprimX, Strix and FE in voltage regulation. The power stages having HSSCP(Hi Side Short Circuit Protection) is a nice extra on such an expensive card.