Thunderbolt 3 vs. Thunderbolt 4 - The DEFINITIVE explainer! 

Thank you so much for your video illustrating both Thunderbolt 3 & 4 technologies. I just bought a second hand Razer Core X egpu that comes with no Thunderbolt cable at all and I was about to order a new Thunderbolt 4 cable for it. If I do so, then my connection will be limited to only 1 PCIe line due to the Thunderbolt 4 hub architecture and bandwidth limitation. By ordering an older Thunderbolt 3 cable (which I taught was outdated) I'll take full advantage of all 4 PCIe lanes that are normally required for an egpu. This type of limitation isn't mentioned nowhere so I'm glad I found you're video. I just saved 70 bucks on an useless cable! Thank's buddy :)))

Thank you for explaining this four times to understand the concept. Water pipes was very helpful for visual learners like myself.

Thank you

Not sure I understand the 4-to-1 difference between TB3 vs TB4 access to PCIe lanes of input. Are PCIe lanes used for non thunderbolt ports. Does that mean that a hub with 4 USB-c non-thunderbolt ports on a TH3 dock each have access to 10Gb/s of bandwidth instead of having to share a single 10Gb/s channel?

I was looking to buy the 'OWC Envoy Express' to connect my Mac M2 laptop to an external NVMe M.2 drive enclosure for 6K playback. I held off when I saw it was TB3, assuming TB4 would be faster, but am I correct in believing that TB3 is actually better (or same) for simple fast connection from one laptop to one HDD?

It would be helpful to have a use case example or two of situations where TB4 is preferable. Is trying to have three devices talking through the 4-lane PCIE prone to having issues that the devices wouldn’t have in their separate TB busses?

Your explanation was AWESOME! Thank you! :)

Since they have different purpose, it is strange to call TB4 for 4th version, like an upgrade. Thanks for the video!

So if I have a TB3 dock and use a TB4 cable to connect my Mac.. will anything change? I needed a slightly longer cable than what was supplied with the dock.

I was waiting for the bit where your analogy says what happens when I plug a TB3 device into a TB4 port...

Dear Sir, I need help and you appear to be HIGHLY HIGHLY skilled in this area. I am in the process of purchasing a dock for my gaming laptop. I am a PC Gamer who works a lot and is always on the go, ergo, I went the gaming laptop route. I wish to having a docking station at home so I can plug in all my peripherals and an external monitor so that when I get home, I just plug in my laptop to the dock and i'm good to go. As far as my setup goes, I plan to use a Dell 27-inch 1080P 144hz gaming monitor (just one), a keyboard, mouse, ethernet, and some speakers. Will a USB-C dock be enough? Or do I need to go the thunderbolt route? Do i connect the monitor to the dock using displayport or hdmi?

The best explanation video!!! Thank you so much. Can I use a TDBL 4 cable in a TDBL 3 docking? Is it compatible?

So but a thunderbolt 4 hub but buy thunderbolt 3 accessories like an external ssd

I don't even know what I bought at this point but it is not serving my purpose. The confusion and misinformation in this space is close to reaching organized ripoffs...

lol, thanks for trying.

Une comparaison sans test de débit, c'est inutile.

There's engineering math, and then there's marketing math.