The difference between USB-C and Thunderbolt3 Connector
Translated into Chinese, USB-C is probably "Universal Serial Bus Type-C Interface", which, as the name suggests, is an interface. This interface supports the USB protocol, but compared with the Type A interface (A port), the C port exceeds the maximum 10Gbps bandwidth of the A port, can soar to 20G or even 40G bandwidth, and can support up to 100W PD charging, and Support DP protocol.
Thunderbolt3 is a protocol. The birth of this protocol is completely based on the three characteristics of the C port mentioned above (40G bandwidth, 100W power supply, DP protocol), using the C port as the medium, and dividing the bandwidth into Pcie3.0x4 and USB3.1 (10Gbps), the Video resources are allocated to the DP controller to achieve 20Gbps/40Gbps bandwidth and line connection function. Because PCIE is gone, it can also realize an external graphics card. The reason why the Thunderbolt 3 interface is expensive is that in addition to the C port, the output end, the input end, and both ends of the connecting line need to be implanted with the Thunderbolt 3 control chip to realize the multi-function of the protocol.
The reason why Intel directly calls the interface equipped with Thunderbolt 3 protocol Thunderbolt3 instead of USB Type-C with Thunderbolt3 (refer to USB Type-C with DP) is because with the blessing of Thunderbolt 3 control chip, this interface can no longer be regarded as normal. USB interface, but a unique interface.
So back to the question of the title, USB-C is an interface, and the Thunderbolt3 interface is a special interface based on the Type-C interface and equipped with a Thunderbolt 3 controller to support the Thunderbolt 3 protocol. Both have the physical appearance of the Type-C interface. Thunderbolt 3 is compatible with USB3.1 (10Gbps) and below USB protocols, and can be used as a full-featured Type-C, while Type-C cannot support Thunderbolt 3 in turn.
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Post time: Jun-06-2022