Question Which PCI_E put the graphics cards? MSI MAG Z690 TORPEDO

[sart]

Processor: i5 12600kf

Graphics Cards: RTX 3090 and RTX 3050

I have the MAG Z690 TORPEDO motherboard. This board has 3x PCIe x16 slots, as follows:

PCI_E1 (From CPU)
Supports up to PCIe 5.0 x16

PCI_E3 (From Z690 chipset)
Supports up to PCIe 3.0 x4

PCI_E4 (From Z690 chipset)
Supports up to PCIe 3.0 x1

I want to use the RTX3090 for machine learning processing only and the RTX3050 for rendering computer video.

My question is in which slots do I put the video cards and what are the pros and cons of each slot for each video card?

OBS: I don't use the computer to play games, only to work.

 

[hotaru.hino]

If you have no other expansion cards, put the highest performing card in the highest performing slot, then work your way down. It likely wouldn't make a difference, maybe except if you used PCI_E4, but that depends on how much data is going back and forth between the video card and the system.