NVLINK for path tracing

I moving my archviz pipeline to UE5. I belive it will be best choise in near future. But today I facing with many issues. One of general - GPU memory deficit. I have two rtx 3090 now but have not profit yet. Because I don’t have NVLINK bridge yet.

The question is - NVLINK works good with UE5? How it manage GPU memory? Is it becomes 24 + 24 = 48 GB? Or it multiply only calculation power and keep avaliable memory only 24 GB?