it's up to the developers as to how they want to leverage multi-GPU and you can sure as heck bet that manufacturers don't want you having 2, or 4 GPUs working at 2, or 4 times the GPU power.not when they can make more money off of selling you a full priced secondary card, for a 25%(best case scenario). If you buy two RTX cards now, you wouldn't need to buy another card for the remainder of the DX12 API generation.they don't want 's why Nvidia killed SFR SLI, fast-like.