Thunderbolt 2 和 Thunderbolt 3 之间的区别

1. 霹雳 2 ：
Thunderbolt 2 于 2013 年发布，是 Thunderbolt 标准的第二次迭代。与 Thunderbolt 一样，它基于 Apple 开发的 Mini DisplayPort 连接器，这意味着它兼容任何 USB 端口，而且它的电缆也不适合 Thunderbolt 3 端口。 Thunderbolt 2 的最大吞吐量为 20 Gbps，是 Thunderbolt 吞吐量的两倍，是 Thunderbolt 3 吞吐量的一半。

2. 迅雷3：
Thunderbolt 3 于 2015 年发布。它是 Thunderbolt 的最新和最快版本，可以提供 40 Gbps 的最大吞吐量。与 Thunderbolt 2 不同，Thunderbolt 3 中使用 USB Type-C 连接器，并且向后兼容 USB 3.1。它还为这些设备提供 100 W 的功率。

我们可以区分 Thunderbolt 2 和 Thunderbolt 3 端口。如果端口形状像 mini DisplayPort，那么肯定是 Thunderbolt 1 或 2。如果端口形状像 USB C，则它是 Thunderbolt 3 端口。

雷电 2 和雷电 3 的区别：

S.NO	Thunderbolt 2	Thunderbolt 3
1.	In Thunderbolt 2, Apple’s mini DisplayPort connector is used.	Whereas in thunderbolt 3, Type-c connector is used.
2.	It is provides a maximum throughput of 20 Gbps.	While it can provides double throughput of thunderbolt 2 which is 40 Gbps.
3.	It is two bi-directional 10 Gbps channels is provided.	Whereas in thunderbolt 3, two bi-directional 20 Gbps channels is provided.
4.	Thunderbolt 2 is not backward compatible with USB-C.	Whereas thunderbolt 3 is backward compatible with USB-C.
5.	Thunderbolt 2 is not backward compatible with USB 3.1.	Whereas thunderbolt 3 is backward compatible with USB 3.1.
6.	Thunderbolt 2 is slower than thunderbolt 3.	Whereas thunderbolt 3 is faster than thunderbolt 2.
7.	Thunderbolt 2 port provide very low power to any connected device as compared to thunderbolt 3 port.	Whereas thunderbolt 3 port can provides maximum 100 W power to any connected device.
8.	Thunderbolt 2 ports do not support USB 3.1 generation 2 and thunderbolt 3.	Whereas the thunderbolt 3 ports support USB 3.1 generation 2 as well as thunderbolt 3.
9.	Thunderbolt 2 can support one 4K monitor per port.	Whereas it can support one 4K monitor at 120 Hz or two monitors at 60 Hz per port.
10.	In thunderbolt 2 protocol 4x PCI express 2.0 and DisplayPort 1.2 are used.	Whereas in thunderbolt 3, protocol 4x PCI express 3.0, HDMI-2, USB 3.1 generation-2 and DisplayPort 1.2 are used.