Pushing Thunderbolt Limits for 4K Capture

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RetroRGB

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Published on March 26, 2023 5:26:14 PM ● Video Link: https://www.youtube.com/watch?v=Y8nQnZWXML8

Duration: 18:47

2,680 views

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This video tests the maximum advertised 40GBps bandwidth of Thunderbolt and finds real-world results of more like 30GBps. While this will NOT matter in most cases, if true, this will prevent reviewers & video analysts from recording lossless 4K60 4:4:4 via Thunderbolt. And it could also mean limitations for people using modern video cards externally. If you’re a fellow nerd, join me to see if I’m onto something. And if not, that’s fine too. Here’s affiliate links to everything I used:

PC Build:
Case: https://amzn.to/40icllI
CPU: https://amzn.to/3lqngLk
Motherboard #1: https://amzn.to/3n0Blzz
Thunderbolt Card (only for 1st MB): https://amzn.to/3JwAVbD
Motherboard #2: https://amzn.to/3EWifAV or https://amzn.to/3mmR7o4 (only difference is color)
RAM: https://amzn.to/3FBKZ2b
PCIe 4.0 NVME: https://amzn.to/3lvhZlS
PSU: https://amzn.to/3lxAF4b
Sonnet Echo Express SE1 TB Enclosure: https://amzn.to/3n7r051
StarTech.Com TB Enclosure: https://amzn.to/3JSVWPe
Extra Thunderbolt Cable: https://amzn.to/3JrOQjr

Capture Cards:
Live Gamer Bolt: https://amzn.to/40pUPfz
Live Gamer 4K: https://amzn.to/3zaBO5f
Blackmagic UltraStudio 4K Mini: https://amzn.to/3LKie70
Datapath VisionSC-DP2: https://amzn.to/3zaBO5fhttps://www.datapath.co.uk/datapath-products/video-capture-cards/visionsc-range/visionsc-dp2/
Datapath VisionSC-UHD2: https://www.datapath.co.uk/datapath-products/video-capture-cards/visionsc-range/visionsc-uhd2/

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All equipment used to shoot this video can be found here: https://www.amazon.com/shop/retrorgb

00:00 Intro
01:04 Why Test?
02:34 Verify Source
05:09 Setup
08:05 PCIe TB Card
13:37 Integrated Thunderbolt
16:57 Conclusion???