Confuring the 8-Port Channelized T1E1 Serial

t1 slotHey guys, building in the Formd T1 v2.1. I have a 2.5 slot ASUS Proart 4080, and I'm using the Thermalrht AXP90-X53 with Noctua A9x14. I am wondering if I should use 2.5 slot modeNvidia RTX 3070**, 3080** ** Use 2-Slot GPU mode and M3*20 standoffs on SFX Power Supply Bracket to create a 20mm gap between Power Supply and the *front fan on RTX 3070