1. Both Thunderbolt 4 and Thunderbolt 3 have a transmission bandwidth of 40Gbps+. The PCIe connection bandwidth of Thunderbolt 4 is increased by 32Gb/s, which is double that of the previous generation.
2. Both Thunderbolt 4 and Thunderbolt 3 have a transmission bandwidth of 40Gbps+. The PCIe connection bandwidth of Thunderbolt 4 is increased by 32Gb/s, which is double that of the previous generation.
3. Thunderbolt 4 supports the expansion of peripherals with 4 Thunderbolt ports, while Thunderbolt 3 only supports the expansion of 2 Thunderbolt ports.
4. Thunderbolt 4 is full of blood data storage, supporting wires up to 2 meters (40Gb/s), while Thunderbolt 3 is 0.7 meters.
5. The docking stations of Thunderbolt 3 and Thunderbolt 4 need power supply before they can be used.
6. Thunderbolt 4 must add Intel VT-d DMA (Direct+Memory+Access) protection to prevent attacks.
7. The Thunderbolt 4 docking station is compatible with Thunderbolt 3, USB4 and other common docking stations, and is backward compatible in turn.
