What is the Difference Between Thunderbolt 3 and 4?

When shopping for a USB-C hub or docking station, you've almost certainly come across Thunderbolt technology. You might even already own a product that uses Thunderbolt.

But when you look at the Thunderbolt port, it just looks like a standard USB-C port.

So what's the difference? And what's the difference between Thunderbolt 3 and 4?

Read on to find out the answers...

What is Thunderbolt?

Thunderbolt's original intention was to replace and combine a number of pre-existing ports. Thunderbolt can transmit video and audio, transfer files, connect to monitors, storage devices, and it can even charge.

Thunderbolt technology was created back in 2010, and since then the maximum transfer speed has increased from 10 Gbps to 40 Gbps.

For more than a decade, Thunderbolt technology has been part of the Apple device ecosystem, and the USB-C port on Apple devices generally supports Thunderbolt technology. Thunderbolt technology is currently in its 4th generation and can be used on devices with Thunder Lake CPUs and Intel's EVO platform.

At present, Thunderbolt 3 and Thunderbolt 4 are the most commonly used versions of Thunderbolt technology.

What is the difference between Thunderbolt 3 and Thunderbolt 4?

• Screen Expansion: Thunderbolt 4 supports 4K to dual monitors or 8K to a single monitor, while Thunderbolt 3 supports 4K to dual monitors or 5K to a single monitor.
• Charging: Thunderbolt 4 can provide charging power up to 100W from a single port.
• Data Transfer: Thunderbolt 3 has a PCIe data transfer speed of 16 Gbps, while Thunderbolt 4 supoorts a PCIe data transfer speed of 32 Gbps.
• Sleep Mode: Thunderbolt 4 lets users wake up their laptop using an external keyboard or mouse that's connected via the Thunderbolt 4 port.
• Security: Thunderbolt 4 provides Direct Memory Access (DMA) protection. It is based on Intel VT-d's DMA* protection, which can physically prevent DMA attacks. Although this level of protection is probably overkill for ordinary users, it can prevent malicious devices from using DMA to steal information from enterprises and users with extremely high data confidentiality requirements.

*DMA attack: In a Direct Memory Access attack, PCIe devices can directly access the data in a devices memory without going through the CPU. In short, if a malicious PCIe device accesses the computer, then even an encrypted computer can be easily cracked.

In short, Thunderbolt 4 is the "stricter version" of Thunderbolt3. The Thunderbolt4 interface mainly improves compatibility, reliability, and security, and improves connection capability. It can be said to be a supplement to the Thunderbolt3 interface.

Is there Thunderbolt 5?

Yes, Thunderbolt 5 is officially announced and is the next generation of Thunderbolt technology. It will likely provide 120Gbps data transfer (double the speed of Thunderbolt 4), support for higher-resolution displays, and improved connectivity options. With these advancements, Thunderbolt 5 will cater to users requiring high-performance setups, such as gamers, content creators, and professionals handling large data transfers or multiple 8K displays.

Recommended USB-C hubs or docking stations with Thunderbolt

At the moment, Anker has launched Thunderbolt 3 & 4 docking stations.

Of these, our flagship Anker 777 Thunderbolt Docking Station (Apex, 12-in-1, Thunderbolt 4) comes with 12 ports, which can connect to up to 3 screens, supports 8K to a single screen, can charge up to 120W, and can transfer data at up to 40 Gbps.

So if you're looking to get the most out of your laptop, then we'd definitely recommend taking a closer look at Anker 777 Docking Station. This docking station is perfect for maximizing your laptop's potential in a professional or personal setting.

But if you're looking for even more power and versatility, the Anker Prime Docking Station (14-in-1, 8K, Thunderbolt 5) can take things to the next level:

With 120Gbps data transfer, you'll experience blazing-fast speeds, whether you're transferring large files, rendering graphics, or engaging in real-time gaming data. The Thunderbolt 5, HDMI 2.1, and DisplayPort 2.1 options ensure that you can connect a variety of devices and monitors with flexibility. The active cooling system keeps your setup efficient and your devices running smoothly, while built-in power ensures all your devices stay charged without any interruptions.

Offering unmatched performance, advanced connectivity options, and an eye-catching interactive lighting system, it’s an all-in-one solution to streamline your devices and create an immersive workspace.

Conclusion

When choosing between Thunderbolt 3 and 4, Thunderbolt 4 clearly stands out with faster PCIe speeds, better display support, enhanced charging, and improved security—making it a more future-ready option for professionals and tech enthusiasts alike.

For those who want the latest performance, the Anker Prime Docking Station (14-in-1, Thunderbolt 5) offers ultra-fast 120Gbps transfer speeds, dual 8K display support, and advanced connectivity, making it perfect for demanding work or immersive entertainment.

FAQ

Is a Thunderbolt 4 the same as a USB-C?

Thunderbolt 4 uses the same USB-C connector, but it offers faster speeds, more power, and better display support. While all Thunderbolt 4 ports are USB-C, not all USB-C ports support Thunderbolt 4.

How do I check if my laptop has Thunderbolt 3 or 4?

To determine if your laptop supports Thunderbolt 3 or 4, look for a lightning bolt symbol next to the USB-C port—this typically indicates Thunderbolt capability. For confirmation, refer to your device’s user manual or check the specifications on the manufacturer’s website.

Can I plug a USB-C into a Thunderbolt port?

Yes, you can plug a USB-C device into a Thunderbolt port. Thunderbolt 3 and 4 ports use the same USB-C connector and are fully compatible with USB-C devices. However, while the connection will work, the device will operate at USB-C speeds and functionality - not Thunderbolt speeds.