Maybe not 2x (scaling is never linear) but you can absolutely chain them, and macOS supports RDMA over TB5 for even better performance https://news.ycombinator.com/item?id=46248644
Their point stands. People are just not going to daisy-chain these together for datacenter use. Apple does not take the workload seriously and macOS is not a suitable OS for mass deployment.
RDMA is the bare minimum we should expect from a system that doesn't support eGPUs and treats PCI like a foreign language. It's not a long-term solution and even Apple themselves cannot deny this: https://9to5mac.com/2026/03/02/some-apple-ai-servers-are-rep...
Their point stands. People are just not going to daisy-chain these together for datacenter use. Apple does not take the workload seriously and macOS is not a suitable OS for mass deployment.
RDMA is the bare minimum we should expect from a system that doesn't support eGPUs and treats PCI like a foreign language. It's not a long-term solution and even Apple themselves cannot deny this: https://9to5mac.com/2026/03/02/some-apple-ai-servers-are-rep...