No, it's GB/s. PCIe 4.0 x16 has a bandwidth of 32 Gigabytes/s.
Might be able to eventually get 80Gbps out of USB4v2.
Same issue here, found anything good?
Not yet Orico seems pretty disappointing 600MB/s for their 20Gbps enclosures. I would thought you should already get that with their 10Gbps ones. So a bit wary to try out their 40Gbps enclosures.