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Question reguarding the use of External SSDs in motherboards USB headers

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Hey everyone, i have a good understandings of how SSDs work, however one question that i'm having trouble to find detailed information online is this:

Imagine the following scenario, you just bought a new USB 3.2 Gen 2x2 (20Gbps) and your motherboard has a Type-C connector for it, however it's wired to an ASMedia ASM3242 (Bridge Controller), the performance would be great, and this was very common on these first gen board that came with USB 3.2 Gen 2x2 since these Chipsets like Z490 didn't have native support for USB 3.2 Gen 2x2 inside of them. Ok, however these new boards like Z590, a lot of them already offer supports for this connection wired directly for the PCH, which is cool, but i assume it could cause some higher latency performance, correct? Would there be a performance difference between then?

PS: Pardon my bad english, it's been a long time since i don't practice it
 
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I doubt you'll see a huge latency difference, but yes, different USB host controllers perform differently.
I haven't done any testing since USB 3.0 was the hot stuff, but back then there was quite a big difference in performance between different host controllers.

For the ASM3242 it'll also depend on how it's connected to the chipset, as some board vendors have been known to only use one instead of two PCIe lanes for some of these types of chips.

Overall, I don't think you'll see a huge difference if the ASM3242 is integrated properly, compared to a native port.

You can find some testing here https://www.anandtech.com/show/16133/usb-32-gen-2x2-state-of-the-ecosystem-review
 

Jill Valentine

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I'd agree pretty much with @TheLostSwede on this. Probably you could see some differences on synthetic benchmarks, but in real use, probably not.
 
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I haven't done any testing since USB 3.0 was the hot stuff, but back then there was quite a big difference in performance between different host controllers.
First of all thanks for answering, and thats why i was asking ahah, i remember how it was like back in a day.
 
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First of all thanks for answering, and thats why i was asking ahah, i remember how it was like back in a day.
Yep, some of the X58 era early usb 3.0 addon controllers were truly trash.
 
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