t1 slotNvidia 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 3070Yes, you can, but there will be an extra slot of free space on the GPU side. The new version of the T1 (v1.2) should have 1.25 or 1.5 slot support so you can take up the least amount of space