"If CXL can seamlessly scale GPUs, then the economics of the market would also change completely. People would be able to buy a cheaper GPU first and then simply add another one if they want more power. It would add much more flexibility in buying decisions and even alleviate buyers remorse to some extent for the gaming class. If CXL mode trickles down to the consumer level anytime soon, then we might even see motherboard designs change drastically as multiple sockets and multiple GPUs become a feasible option. Needless to say, it looks like things are going to get pretty exciting in a few years."
(2019) Intel Hints Towards An Xe ‘Coherent Multi-GPU’ Future With CXL Interconnect
https://wccftech.com/intel-xe-coherent-multi-gpu-cxl/
"If CXL can seamlessly scale GPUs, then the economics of the market would also change completely. People would be able to buy a cheaper GPU first and then simply add another one if they want more power. It would add much more flexibility in buying decisions and even alleviate buyers remorse to some extent for the gaming class. If CXL mode trickles down to the consumer level anytime soon, then we might even see motherboard designs change drastically as multiple sockets and multiple GPUs become a feasible option. Needless to say, it looks like things are going to get pretty exciting in a few years."