Hi,

I'm building a station with these components:

Intel Core i9-12900KF (3.2 GHz / 5.2 GHz)
nVidia 3090 FE
be quiet! Silent Loop 2 360mm
Gigabyte Z690 AORUS Tachyon
Corsair Vengeance DDR5 32 Go (2 x 16 Go) 5200 MHz CL40 - Noir
Samsung SSD 980 PRO M.2 PCIe NVMe 2 To
be quiet! Silent Base 802 (Noir)
be quiet! Straight Power 11 850W 80PLUS Platinum

I have a question concerning the pcie lanes,
The cpu has 20 of it so: 4 for the nvme drive, 8 for gpu(enough no need to use 16) and 8 for a Decklink 8k Pro.
The initial plan was to have 4 physical 4k inputs and switch between the decklink and a elgato camlink pro (4HDMI) depending of the production.
But I saw that the elgato uses only 4 pcie lanes.

So my question is: if I mount my nvme drive on the chipset lanes to gain 4 lanes, and mount both Elgato and BM capture cards, will I be able to use it at the same time?
I'm only talking about the pcie limitations, maybe 8 4k inputs will be too much for the machine but could 6 4k or 8 HD work like this?

Thank you in advance

CPU = 20 LANES

PCIE 1 = 5.0 x8 = nVidia 3090FE
PCIE 2 = 5.0 x8 = DECKLINK 8K pro
M2.1 = PCIE 4.0 x4

chipset Z690 = 4.0 x8
elgato cam link pro = 2.0 x4
also it's ok but not recommended by Vmix

Regarding your setup idea:
You need to test whether it's better to put the Windows SSD on the M2_1 port (CPU) + elgato cam link pro on pcie slot 4 (chipset Z690)
or ssd windows on the M2_2 port (chipset) and elgato cam link pro on M2_1 port (CPU)

Perhaps a solution for 8 inputs 4K30p on the PCIe CPU lanes:

Install an M.2 controller card (PCIe 5.0 x8 to 2 M.2 ports) and enable x4+x4 bifurcation in the BIOS.
Connect M.2 to PCIe x4 risers to the ports on the M.2 controller card.
And connect two Elgato CamLink Pro cards to the M.2/PCIe x4 risers.

Given the size of the 3090 FE, the Elgato cards need to be relocated.




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