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Question When will USB4 be on most of the AM5 boards?

G

GunsMadeAmericaFree

Golden Member
I've started seeing Lightning5, but have yet to see USB 4 on the AM5 boards when I browse at Micro Center. Is it likely to be on most boards by the end of the year?
 
X870E. If AMD mandates 40gbps USB4 for that platform that's when it'll be common. Otherwise it adds cost and most people don't care so it's a less common feature.

Actually, even my crappy X670E seems to support USB4... may be more common than I thought.
 
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gdansk said:
X870E. If AMD mandates 40gbps USB4 for that platform that's when it'll be common. Otherwise it adds cost and most people don't care so it's a less common feature.

Actually, even my crappy X670E seems to support USB4... may be more common than I thought.
Click to expand...
Until AMD updates the IOD or chipset to provide USB 4 connectivity, it will be an upsold add-on requiring additional hardware.

This is the reason most AM5 boards don't have it. It's not provided by the CPU or chipset IO.
 
This. You only see USB4 (and TB3, before that) on premium boards that have to use a separate chip - generally ASMedia for USB4 - which in turn connects to the CPU/SB via PCIe.

I expect we'll see native USB4 on the Zen6 IOD, and perhaps on the higher-end Zen5 chipsets.
 
Slightly off topic question but what can saturate a USB 4 connection on a PC?
I presume that it would have to be video related but I'm not sure what could pump out that amount of data.
 
Most PCIe gen4 m.2 drives could saturate a 40gbps link, assuming they are connected to a USB port and external USB to PCIe controller which both support it.
 
Anything that needs 20-40 Gbps speeds would be able to saturate USB4.

Say, a USB4 NVMe enclosure with a Gen4/Gen5 SSD.

And of course, video as in just your DisplayPort 2.0+ signal: 8K/60Hz/10-bit uncompressed is 80 Gbps (works because 40 Gbps is bidirectional bandwidth).
 
Is it correct to say thunderbolt 4 and 5 are types of USB 4, but USB 4 is not necessarily thunderbolt? I saw some boards with thunderbolt 5 at Micro Center....
 
GunsMadeAmericaFree said:
Is it correct to say thunderbolt 4 and 5 are types of USB 4, but USB 4 is not necessarily thunderbolt? I saw some boards with thunderbolt 5 at Micro Center....
Click to expand...
Thunderbolt 4 is based on the USB 4 standard, and Thunderbolt 5 is based on the USB 4 v2 standard.

The difference is that the USB standards allow lots of features to be optional, while Thunderbolt makes some of the features mandatory.

In real life, this means that a USB 4/5 device will always work well with a Thunderbolt 4/5 host (port), while a Thunderbolt 4/5 device may be limited when connected to some USB 4/5 host (port).

We should expect more clarity once AMD starts including USB 4/5 functionality via its CPUs/chipsets instead of relying on third-party add-on chips like Asmedia.
 
>>We should expect more clarity once AMD starts including USB 4/5 >>functionality via its CPUs/chipsets instead of relying on third-party add-on >>chips like Asmedia.

Has that been announced for anything yet?
 
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