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What are the differences between thunderbolt 2 and thunderbolt 3?
Let us understand the concepts of Thunderbolt 2 and 3 respectively.
Thunderbolt 2
Thunderbolt 2 connector is a Mini DisplayPort connector developed by Apple. It allows a maximum throughput of 20 gigabits per second, whereas the original Thunderbolt port can deliver up to a maximum of 10 Gbps. It achieves over the USB 3.0 technology that has a maximum speed of only 5 Gbps.
Given below is the image of thunderbolt 2 −
Thunderbolt 3
It is the latest and the fastest version of the Thunderbolt provides a maximum throughput of 40 gigabits per second. It was introduced in 2015, by Intel’s. It proves to be a potential gamechanger. Unlike Thunderbolt 2, the Thunderbolt 3 uses the USB Type-C connector and is backward compatible with USB 3.1.
Given below is the image of thunderbolt 3 −
Differences
The major differences between thunderbolt 2 and thunderbolt 3 are as follows −
| Thunderbolt 2 | Thunderbolt 3 |
|---|---|
| Thunderbolt 2 was created in the year 2013. | Thunderbolt 3 was created in the year 2015. |
| It uses MDP (Mini DisplayPort) connector | It uses a USB-C connector. |
| It supports a bit rate of 20 Gbps. | It supports a bit rate of 40 Gbps. |
| It uses protocol 4 x PCI express 2.0 and DisplayPort 1.2. | It uses protocol 4 x PCI express 3.0, DisplayPort 1.2, HDMI-2 and USB 3.1 Gen-2. |
| It provides two bi-directional 10 Gbps channels. | It provides two bi-directional 20 Gbps channels. |
| It is not backward compatible with USB-C. | It is backward compatible with USB-C. |
| It is slower when compared to thunderbolt 3. | It is faster when compared to thunderbolt 2. |
| It provides less power when compared to thunderbolt 3. | It provides more power up to 100 W when compared to thunderbolt 2. |
Given below is a sample image of Thunderbolt 2:  | Given below is a sample image of Thunderbolt 3:  |
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