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RTX 4090 Suprim X PCB breakdown notes
🕑 Added 2022-10-12 23:14:26 +0000 UTCFuses!
1x 12A fuse on PCI-e slot 12V
1x 20A fuse for Vmem's 12V supply
Input filtering bulk capacitance
13x 180uF 16V TH aluminum polymer
28x 100uF 16V SMD tantalum polymer
Vcore Controller: MP2891 12 phases
MOSFETs: 26x MP86957 70A SPS (2 in most phases 3 in 2 phases)
1.2V 500KHz 150nH (power stages only?)
300A ~24W
400A ~30W
500A ~39W
600A ~48W
800A ~78W
Vcore VRM bulk capacitance
48x 220uF SMD aluminum polymer
Vcore core bulk capacitance
4x 470uF SMD aluminum polymer
2x 10x MLCC
Vmem Controller: MP2891 +4 phases
MOSFETs: 4x MP86957 70A SPS (1 per phase)
Vmem bulk capacitance:
4x 470uF SMD poly
6x 220uF SMD poly
Notes:
The most powerful RTX 4090 PCB I'm aware of ATM. Tons of input filtering. Output filtering might not be as good as the Strix but without oscilloscope measurements it's impossible to say if the difference is note worthy.
Comments
Aspernari
I have the Suprim Liquid and it sings the song of its people pretty readily.
Corey Shuman
The MSI Gaming Trio and Gaming X Trio use the exact same PCB as the Suprim X, but are instead populated with NCP303151A 50A mosfets, 18x for Vcore and still 4x for Vmem. That seems like a pretty massive cutdown, and it's interesting to see such significant differences in BOM for the same PCB.
Actually Hardcore Overclocking (Buildzoid)
doesn't seem to do anything based on this review: https://www.guru3d.com/articles-pages/msi-geforce-rtx-4090-suprim-liquid-x-review,32.html
crossbone
What do you think about those special anti coilwhine components MSI advertises. Do you think they will actually help?
Jono 710
Hmm, I-N-T-E-R-E-S-T-I-N-G
