Abstract
- Thunderbolt 4 is quite common, because it’s usually related to USB 4, and permits some very highly effective docks, drives, and shows.
- The newest normal is Thunderbolt 5, with even higher efficiency than its predecessor — as much as 120Gbps in some circumstances. The trade-off is that it is also rarer and costlier.
- As a rule, it’s best to skip something beneath Thunderbolt 4. Thunderbolt 3 is a weaker model of 4, and 1 and a pair of are out of date.
If you’re looking for a brand new PC or Mac and contemplating ports, it is often most necessary to concentrate on what number of USB-C connections there are, adopted by how briskly they run. Some laptop makers nonetheless insist on loading machines with USB-A, despite the fact that USB-C is already de facto for a lot of telephones, tablets, SSDs, and different merchandise. Both means, it is ridiculous that we’re nonetheless coping with 5Gbps ports in lots of circumstances when 10, 20, and 40Gbps variations of USB exist.
You’ve got in all probability seen one other connection sort floating about, although: Thunderbolt. In the event you’re not acquainted, here is what you have to know in regards to the totally different styles of Thunderbolt, and why any new laptop you purchase ought to have no less than one port outfitted for it.
- Working System
-
MacOS
- CPU
-
M4 Professional 14-Core CPU
- GPU
-
M4 Professional 20-Core GPU
- RAM
-
24GB, 48GB

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Thunderbolt 1 and a pair of
The origins of the usual
Apple / Pocket-lint
I am lumping Thunderbolt 1 and a pair of collectively largely to say this — do not look forward to finding something new utilizing these applied sciences. Thunderbolt was born means again in 2011 out of a collaboration between Apple and Intel, and positive sufficient, the primary two variations of the usual did not have a lot attain past the Apple ecosystem. Within the fashionable tech panorama, one thing with both of them may as effectively be an vintage.
Do not look forward to finding something new utilizing Thunderbolt 1 or 2.
At greatest, you may be capable to pair Thunderbolt 1 and a pair of peripherals with later variations of Thunderbolt by way of an adapter. However these peripherals are doubtless sufficiently old in their very own proper that you need to be monitoring down one thing newer, and even an adapter may not be sufficient. There have been elementary architectural modifications within the transition to Thunderbolt 3.

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Thunderbolt 3
Outdated, however nonetheless usable
That is the oldest model of Thunderbolt you are more likely to encounter within the wild. That is as a result of it shares the identical connector sort as USB-C, and for those who connect a USB cable, the usual helps speeds as much as USB 3.1 Gen 2 (10Gbps). Issues get way more spectacular with a real Thunderbolt pipeline, providing transfers of as much as 40Gbps. You additionally get DisplayPort 1.2 video output at a minimal, and 1.4 on newer iterations. Sometimes, there’s sufficient bandwidth to help two 4K displays operating at 60Hz, or a single 4K display screen at 120Hz.
Energy supply varies. Optical Thunderbolt 3 cables cannot ship any energy, and copper ones are typically capped at 15W. After they help USB-PD (USB Energy Supply), nevertheless, copper cables can deal with as much as 100W, which is sufficient to run some peripherals and not using a separate energy twine.
That brings us to probably the most necessary options of Thunderbolt: daisy-chaining. It is typically potential to string a number of Thunderbolt peripherals collectively, lowering the necessity for docks or further ports on the supply system. I say “typically” as a result of no less than one peripheral has to have a number of Thunderbolt connections, and the follow would not appear all that frequent exterior of stringing a dock to a monitor.

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Thunderbolt 4
The commonest format
Razer
Thunderbolt 4 represents a serious leap ahead. Not by way of most bandwidth, thoughts — it is nonetheless capped at 40Gbps like Thunderbolt 3. Reasonably, it is as a result of Thunderbolt 4 is intimately tied to USB 4. In the event you’ve acquired a kind of two, you have virtually all the time acquired the opposite, so it is now fairly frequent to seek out Thunderbolt on PCs, whereas you usually needed to exit of your means to purchase a pc with earlier Thunderbolt variations until you had been a Mac fan.
There’s been an explosion in Thunderbolt 4 docks, which let you dramatically develop your laptop’s port capability and/or declutter your desktop.
The improve additionally consists of help for Thunderbolt Alternate Mode USB hubs, with that Alt Mode enabling two bidirectional 40Gbps channels per connection. Due to this and USB 4’s broader enchantment, there’s been an explosion in Thunderbolt docks, which let you dramatically develop your laptop’s port capability and/or declutter your desktop. My Razer dock, for instance, consists of 4 Thunderbolt 4/USB-C connections, three USB-A 3.2 Gen 2 ports, an SD/UHS card reader, and a gigabit Ethernet jack. If I wished to, I may utterly skip the ports constructed into my laptop computer.
Some tablets help Thunderbolt 4 as effectively, reminiscent of Apple’s iPad Professional. Certainly, you will in all probability want a Thunderbolt dock for those who intend to show a pill right into a workstation, since there’s usually only one or two wired connections obtainable.

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Thunderbolt 5
The bleeding edge
Razer
Thunderbolt 5 is the latest iteration, and arguably a good additional leap forward than 3 or 4. On gadgets with USB 4 v2, the format helps two-way transfers as much as 80Gbps, and unidirectional ones as much as 120Gbps, with the second channel dropping to 40Gbps. That may make an enormous distinction in backing up drives or working with giant quantities of video content material. Even at 80Gbps, you are copying a 1TB folder in solely a minute and 40 seconds.
I would persist with Thunderbolt 4 for now for those who’re not involved with maximizing show or storage speeds.
There’s extra. For each storage and exterior graphics {hardware}, there’s improved information throughput utilizing PCIe Gen 4×4. You additionally get help for DisplayPort 2.1 video output, and as much as 240W of downstream energy for hooked up gadgets. Relying on the precise cables and gadgets you have acquired, that DisplayPort compatibility can allow a really spectacular gaming rig — at peak efficiency, you will pump out 4K video at 240Hz, or 8K at 85Hz. Extra virtually, you can arrange two 4K 120Hz displays or an equal ultrawide.
There are two large catches with Thunderbolt 5, the primary being the rarity of USB 4 v2 on computer systems. On prime of that’s the worth and availability of Thunderbolt 5 equipment — the format has solely been round since 2024, so there is a restricted vary of choices, and you will be paying extra for the privilege. I would persist with Thunderbolt 4 for now for those who’re not involved with maximizing show or storage speeds.

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