The difference of USB-C and USB 4, Thunderbolt 4

The difference of USB-C and USB 4, Thunderbolt 4
4 min read
22 September 2022

The difference of USB-C and USB 4, Thunderbolt 4

What is the difference between USB-C and USB 4, Thunderbolt 4, don't they all look the same? CABLETIME store offers Thunderbolt 3, Thunderbolt 4, USB C cable, if you want to buy, please visit the website.


  1. USB-C


USB-C, full name USB Type-C, is a physical appearance of the USB interface form (remember to take the test), thin and light, do not have to distinguish between the front and back, to support the front and back blind plug.


With its 24 pins, it can accommodate almost all USB transmission protocols, including USB 2.0, USB 3.0, USB 3.2, USB4, etc., as well as USB-PD fast charging protocol, DisplayPortP digital video protocol, Thunderbolt 3/4 protocol, etc., thus achieving higher USB transmission speeds, up to 100W power potential and transmission of ultra-clear The performance potential of the video signal, the momentum of a unified interface.


As mentioned earlier, USB Type-C is only a physical form of interface, and the actual performance will depend on which protocol it goes.


For example.


Apple [M1 Max models] USB-C port, the transfer rate of only 10Gb / s.


[M1 Ultra models] using the Thunderbolt 4 port, the transfer rate of up to 40Gb / s ......


  1. USB4


USB4 is a protocol for transferring data that uses the USB-C physical form and incorporates the Thunderbolt 3 protocol to support both high-speed data transfer and video/audio transmission. Its main performance is as follows.


1, divided into two versions: USB4 20 (theoretical rate of 20Gbps) and USB4 40 (theoretical rate of 40Gbps).


2, compatible with DisplayPort 2.0 video transmission protocol, supporting real-time transmission of 8K@60Hz + HDR10 video.


3, can be external graphics cards, two 4K monitors or a 5K monitor, etc.


  1. Supports up to 100W PD power supply, covering the charging power of most devices.


Based on the Thunderbolt 3 protocol for the development of USB4, more versatile, lower device requirements, no licensing fees, and downward compatible with a variety of USB standards and Thunderbolt 3, and Thunderbolt 4 complement each other and are mutually compatible.


Thunderbolt 4


Thunderbolt 4, a new generation of high-speed data transfer standard introduced by Intel, also uses USB-C physical interface and is compatible with USB4, DisplayPort and PCIe. its main performance performance is as follows.


1, data transfer speeds of up to 40Gbps


  1. PCIe transfer speeds of up to 32Gbps and storage transfer speeds of up to 3,000MB/sec.


3, support for two external 4K monitors or one 8K monitor at the same time.


  1. support for docking stations with up to four Thunderbolt 4 ports.


Compared to the previous generation of Thunderbolt 3, Thunderbolt 4 has mainly improved compatibility, reliability and security, and enhanced connectivity. It can be said that under the aegis of Thunderbolt 4, laptops can be transferred to almost any interface, which greatly enhances the expansion performance, but of course the price will be higher.


In contrast to USB4, which is also based on the Thunderbolt 3 underlying protocol and USB-C physical interface, Thunderbolt 4 defines strict product functionality, verification testing and certification requirements, and requires additional licensing fees.



In short, USB4 is built by the usb-IF Association based on the Thunderbolt 3 underlying protocol, while Thunderbolt 4 is an improved upgrade from Intel based on Thunderbolt 3.


CABLETIME is a Chinese usb c cable manufacturer, focus on computer accessories, is looking for distributors, if you are interested, contact us.

Edward Milton 2
Top notch SEO Content Writer, Link builder, Digital Marketer
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