Thunderbolt eGPU bandwidth limit explained | RTX 4090 + 13700H

Thanks for your work, it's very useful. I hope our dream of a sleek laptop that simply docks into a gaming rig will become true soon :)

Thanks for this video . I have been always curious about eGPUs ankd this video gave me good idea of this.

awesome review, keep it up. I will also wait until there are laptops with thunderbolt 5

I really liked how you got into the Thunderbolt details. I have run an eGpu with an old i5 4 core laptop and now a i5 12500H laptop. The sweet spot for me seemed to be an RX 3070, and a 3080 was only marginally better, but I can see how a 4090 would be substantially better as it has sooo much more power. What I have done recently is move from a big eGPU box to a GPD G1 (a little portable RX 7600M XT 8Gb card and Dock), and this does very well and fits in my bag. I have run an USB/NVME with this also and get 10Gbps speeds out of that, and also plug the network in. SO, basically a TB dock and eGPU. It also has Oculink so potential for a full 4 lanes of PCIe if you get a laptop with such a connector or add one yourself.

Great video. Excellent explanation👍

First of all, thank you for the video, I feel me so honored to be subscribed to this channel due to the above-average quality, especially because it is educational and very informative! I want to ask you something, I have a laptop with an i7 10875H and an RTX2070, do you think an EGPU with an RTX4060 would give me a gain in performance? Thanks for the video and if you can answer me! (sorry for my bad English)

I've been using an RTX 4070 super with my legion go with a z1 extreme. This was a great video, thank you.

Excellent video. Thunderbolt 5 seems promising.

Just some info, the PCIE lane depends on what thunderbolt controller being used in the host device. For example, I'm using huawei matebook x pro which using JHL6240 thunderbolt 3 controller, it only has 2 pcie lanes physically. But on some other laptop, like lenovo ThinkPad T480, it uses JHL6540 thunderbolt 3 controller which has 4 pcie lanes.

I can seem to find the information about the difference between using the TH3P4G3 Thunderbolt 60w vs the 85w. I wanna run RTX 4070 ti with external SSD. Which should i get? Does it make a difference? Why are there 2 different wattage rating? Thanks

Great video, glad i discovered this video. Can you please do a comparison of Image generation using eGPU vs iGPU and puting the gpu in your PC that you might build next. You can use the Automatic1111 as it's easy to setup. Using egpu for this machine learning or generative task would be a great use case as there is no video output like games. it would be like mining as mining only needed 4x pcie.

Is there any benefit to using an external m.2 nvme ssd for game installation in this case? I see you're using the Samsung T5 which is SATA

Incredibly informative. Thank you! Laptops with dGPU's are pretty much useless because of the poor battery life. Being able to plug an eGPU and not needing to invest on a desktop will be really nice. One device(and port) to rule them all.

Thanks for the video! Question, is thunderbolt 4? Thinking for legion go since i got a gpd g1 and having issues with z1 extreme thats on the legion go.

Hello i have an all in one pc but it doesn't have a thunderbolt 3 can i use a adapter

How's you performance recording vs not recording ❓🤔 Also do you think there's any way to increase the bandwidth even a little from like 24 gbps to 28 or something

On MSI Afterburner there is a monitoring option for BUS Usage. You have to monitor it. And yes, frame time are so horrible, and it would be better 60fps straight line, than 120fps zigzag.

If you decide to do a revisit, I'd recommend to check if turning off Afterburner and RTSS will help in games with low performance/stutters.

Does the chip have the thunderbolt controller built into the SOC, or is the controller on a separate chip: the chipset? If the latter is the case it nukes performance.

thanks for vedio , cna you please try it in external monitor ? i thinck it will be batter because output will not pass back to internal monitor , do you thick that ?