RTX 4090 Zotac AMP Extreme AIRO PCB Breakdown notes
Added 2023-01-19 10:19:06 +0000 UTCDual BIOS
Input filtering bulk capacitance
32x 330uF TH poly
Vcore
Controller: UP9512 8 phase
MOSFETs: 24x AOZ5311NQI 55A DrMOS (3 per phase)
1V 500KHz 150nH (power stages only?)
300A ~24W
400A ~36W
500A ~48W
600A ~63W
800A ~115W
Vcore VRM bulk capacitance:
28x 1200uF TH poly
Vcore core bulk capacitance:
4x 470uF SMD poly
2x 10x MLCC
Vmem
Controller: UP9512 4 phases
MOSFETs: 3x AOZ5311NQI 55A DrMOS (1 per phase)
Vmem bulk capacitance:
10x 330uF SMD poly
Notes:
This card probably has the highest total input and output filtering capacitance of any RTX 4090. Unfortunately said capacitance comes almost exclusively in the form of through hole polymer capacitors which have a lot more ESL than the SMD polymers that you see on better RTX 4090 PCBs. So I wouldn't expect the voltage regulation on this card to be particularly impressive. As for current handling capacity. It's not the best but it could be a lot worse.
