External GPUs were always second best. CopprLink may change that

Developed by PCI-SIG for high-bandwidth enterprise use, CopprLink provides a full PCIe 5.0 x16 interface with throughput of 32 GT/s per lane, or 64 GB/s of total bandwidth. That is four times the throughput of an OCuLink connection using PCIe 4.0 x8, one of the fastest eGPU options currently available alongside Thunderbolt. Read Entire Article