Basically 'it depends' is the answer to all your questions, but dual 3090s is a perfectly fine choice. Though ideally you would have NVLINK since it is an advan

Basically 'it depends' is the answer to all your questions, but dual 3090s is a perfectly fine choice. Though ideally you would have NVLINK since it is an advantage over the 4090. In some specialized situations it is possible to have NVLINK act a lot like 48GB of memory, but if you don't already know if you can leverage NVLINK, you very likely aren't in that situation.