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A comment on Intel completely disables AVX-512 on Alder Lake after all. Parent comment

Re:Intel completely disables AVX-512 on Alder Lake after all by philliphaydon on Friday January 07, 2022 @07:54AM (#29838536)
The ryzen 6000 series for laptops will support usb 4 with tb3.

What does tb4 offer over 3?

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Re:Intel completely disables AVX-512 on Alder Lake after all by neogodless on Friday January 07, 2022 @08:30AM (#29838845)
https://plugable.com/blogs/news/what-s-the-difference-betwee...

The short answer for Thunderbolt 4 over Thunderbolt 3 is "a second 4K display" thanks to double the PCIe bandwidth, 16Gbps vs 32Gbps. (The main data channel is 40Gbps in both.)

USB 4 is actually a bit more constrained than Thunderbolt 3, at 20Gbps data channel, and no guarantee of PCIe bandwidth.

> Thunderbolt 4 guarantees support for one 8K display or two 4K displays. A USB4 port can only support one display with no mention of resolution minimums. And even that isn't required as some USB4 ports will not support video at all.

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Re:Intel completely disables AVX-512 on Alder Lake after all by philliphaydon on Friday January 07, 2022 @09:03AM (#29839185)
So it sounds like TB3 + USB4 would be a good docking station, and TB4 just makes it a bit better. So I shouldn't be too worried if I upgrade my laptop and it only has TB3.

Finding it hard to keep up with tech lately :D

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Re:Intel completely disables AVX-512 on Alder Lake after all by Fnoord on Friday January 07, 2022 @11:29AM (#29841101)
Right now I use a machine with USB-C for video out at 1080p one monitor. But I don't use an eGPU with that, and its officially an Android device.

I got 2x 1440p monitor and won't upgrade either any time soon. So I suppose if I were to use both of these, I'd be fine with TB3 and eGPU?

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Re:Intel completely disables AVX-512 on Alder Lake after all by lsaferite on Friday January 07, 2022 @08:33AM (#29838871)
More guaranteed PCIe (32Gbps) bandwidth. Mandated wake from sleep over TB4 while closed. DMA Protection.

It's mostly the same though and devices should be cross-compatible.

Primarily you want TB4 for the stricter requirements for certification.

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Re:Intel completely disables AVX-512 on Alder Lake after all by stransky on Friday January 07, 2022 @08:22AM (#29838768)
longer cables
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