Thunderbolt 5 vs. Thunderbolt 4: Should You Upgrade Your Dock?

Thunderbolt 5 delivers a massive performance leap over Thunderbolt 4 with up to 120Gbps of bandwidth using Bandwidth Boost, enabling high refresh rate and resolution on dual displays and faster external SSD workflows. It’s ideal for creative professionals, power users, and anyone with an M4 Pro/Max MacBook who wants to fully unlock their system’s capabilities. Plugable’s Thunderbolt 5 dock brings future-ready speed and productivity to high-demand setups like multi-monitor workstations and ultra-fast storage environments.

Thunderbolt 5 Is Here. But Do You Need It?

With the launch of Apple’s new M4 Pro/M4 Max and M5 Pro/M5 Max MacBooks, Thunderbolt 5 is stepping into the spotlight. But before you toss your Thunderbolt 4 dock into the tech graveyard, let’s break down what’s actually changed, and who really benefits from the upgrade.

Thunderbolt 4 vs. Thunderbolt 5: The Bandwidth Revolution

• Thunderbolt 4: 40Gbps (Balanced bidirectional)
• Thunderbolt 5: 80Gbps (Balanced) up to 120Gbps using Bandwidth Boost

Imagine your Thunderbolt 4 setup as a high-performance two-lane highway. For most traffic, it’s smooth sailing. But if you're pushing large files, multiple displays, or high refresh rates? Thunderbolt 5 is a six-lane expressway with a passing lane.

This bandwidth upgrade isn’t just theoretical. It’s a real-world performance jump for users who deal in gigabytes and pixels.

Who Actually Benefits from Upgrading to Thunderbolt 5?

1. Early Adopters with M4 Pro/Max Macs: Maximize What You Paid For

If you’ve already invested in an M4 Pro or Max MacBook, you're sitting on a powerhouse of a machine. But plugging it into a Thunderbolt 4 dock means you're not using it to its fullest.

The Plugable TBT-UDT3 was built for this exact situation. With full Thunderbolt 5 compliance, it’s the key to unlocking:

• Higher display bandwidth
• Faster peripheral performance
• Smoother multi-device workflows

2. Multi-Monitor Pros: Dual 4K @ 144Hz Without Compromise

If you're managing a triple-display workstation, particularly with 4K 144Hz monitors, Thunderbolt 4 can start to bottleneck. Compression kicks in. Frame rates drop. You hit the "bandwidth ceiling."

Thunderbolt 5 lets you run three 4K displays at 144Hz, uncompressed. No trade-offs. Just raw visual fidelity.

Pro Tip: If you're using Plugable's Thunderbolt 4 Dock (like the TBT4-UDZ), it's still excellent for dual 4K @ 60Hz. But to fully drive triple displays at higher refresh rates, a TBT5 dock is essential.

3. Creative Professionals: High-Speed Storage Gets a Real Boost

Video editors, 3D modelers, and photographers often rely on external NVMe SSDs for "scratch disk" workflows. These drives are fast, but until now, Thunderbolt 4 ports couldn’t keep up with their full potential.

With Thunderbolt 5, you get faster-than-internal transfer speeds from external drives. Moving massive 8K video files or loading real-time renders is finally seamless.

Should You Upgrade? Here's the Bottom Line.

If your current setup includes:

• Two 4K 60Hz monitors
• A few USB peripherals
• Basic data transfer needs
• Thunderbolt 4 laptop

Then your Thunderbolt 4 dock still has plenty of life in it.

But if you’re pushing the envelope, multiple 4K monitors, ultra-fast NVMe drives, rocking an M4-series Mac or Windows Thunderbolt 5 laptop– Thunderbolt 5 is your ticket to performance without compromise, or if you want to future-proof your setup.

FAQ

How do I know if my laptop supports dual displays through a dock?

Compatibility depends on the specific protocol of your laptop's USB-C port. Docks utilizing DisplayPort Alternate Mode (Alt Mode) or Multi-Stream Transport (MST) require a host that supports those specific features to drive multiple independent screens.

What is the difference between USB-C and Thunderbolt 4 docks?

While both use the same connector, Thunderbolt 4 offers a higher guaranteed bandwidth of 40Gbps and more stringent requirements for data and video performance than standard USB-C. Thunderbolt 4 is also fully backward compatible with USB4 and USB-C devices.

Do I need to install drivers for A Thunderbolt 5 docking station?

Thunderbolt 5 docks are "driverless" and use native operating system support. However, specialized docks using DisplayLink or Silicon Motion technology to overcome laptop display limitations (like those on base M1/M2/M3 Macs) do require a simple driver download to function.