Pci Express Base Specification Revision 6.0 -

| Feature | PCIe 6.0 | CXL 3.0 (over PCIe 6.0) | Ethernet 800G | NVLink 4.0 | | :--- | :--- | :--- | :--- | :--- | | | 64 GT/s | 64 GT/s | 106.25 Gb/s | 100 Gb/s | | Protocol | Memory/IO | Coherent memory | Packet | GPU direct | | Latency | ~50 ns (FLIT) | ~80 ns | >200 ns | ~40 ns | | Topology | Tree | Fabric | Switch mesh | Fully connected | | Use Case | Universal | Memory pooling | Networking | GPU-only |