Difference Between USB 4 and Thunderbolt 4

As mentioned earlier, a Thunderbolt 4 cable is also a USB 4 cable but all USB 4 cables are not certified as Thunderbolt 4 Both USB 4 and Thunderbolt 4 use the same USB Type-C connector which is reversible and rounded. The USB 4 is also based on the very same underlying protocol as Thunderbolt 4, and both types are tightly connected. All thunderbolt devices come with USB 4 support which means if you have a device with Thunderbolt 4 connectors you can use USB 4 cables.

However, not all the devices with USB 4 connectors will be as powerful as the ones that are fully Thunderbolt 4 certified. For example, Apple offers Thunderbolt 4 in many devices that offer the maximum bandwidth of 40 GB/s.

But many Windows computers come with USB 4 but offer a maximum bandwidth of 20 GB/s. Additionally, if you have a laptop with a Thunderbolt 4 connector, you will be able to connect two 4K displays with it. On the other hand, a device with a USB 4 connector will allow you to connect only one 4K display.

But the good thing about USB 4 is that it’s cheaper than Thunderbolt 4 . Bear in mind that USB 4 devices don’t need the official Intel certification so you’ll see devices that have USB 4 capability but offer varying degrees of quality at the same time.


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