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Just what is "Native" USB 3.0?

Tags:
  • Support
  • USB3
  • Sandy Bridge
  • Components
Last response: in Components
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February 2, 2012 10:28:32 AM

I've been reading up on Sandy Bridge vs Ivy Bridge forums and articles, and one term that keeps popping up is whether a chipset or CPU will have "Native USB 3.0 support". I've googled it but there isn't a clear-cut definition anywhere, just tons and tons of people reffering to it. Just what does it mean? I mean... if a motherboard has USB 3.0 ports, it's going to have to support it. Why does it matter if the CPU supports it or not? Do the different kinds of support give the USB3 different speeds?

More about : native usb

February 2, 2012 11:12:32 AM

current usb3 implementations use third party hardware on the mobo (which then may consume PCI-e lanes etc.), native means that its built in with no third party components. Should therefore be cheaper and may not require pci-e lanes etc.
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February 2, 2012 2:36:15 PM

native USB 3.0=All the usb ports are USB 3.0
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February 5, 2012 1:18:51 AM

13thmonkey said:
current usb3 implementations use third party hardware on the mobo (which then may consume PCI-e lanes etc.), native means that its built in with no third party components. Should therefore be cheaper and may not require pci-e lanes etc.


So... currently the parts of the motherboard that handle data passing through USB 3.0 ports use "lanes" thar are normally reserved for PCI-e? So say for example if I had cards in all my PCI-e ports (I doubt this will ever happen but let's pretend) and I start sending bulk data to a USB 3.0 external hard drive... something would slow down? Would it be noticable, or would be something subtle?
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February 5, 2012 2:58:40 AM

PTNLemay said:
So... currently the parts of the motherboard that handle data passing through USB 3.0 ports use "lanes" thar are normally reserved for PCI-e? So say for example if I had cards in all my PCI-e ports (I doubt this will ever happen but let's pretend) and I start sending bulk data to a USB 3.0 external hard drive... something would slow down? Would it be noticable, or would be something subtle?

Ivybridge chipsets for ex: z77 will have native pcie 3.0 support on it.
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February 5, 2012 2:59:31 AM

Honestly we barely have any usb3 devices, this is only something to worry about until the next 5 years where more drives etc have usb 3.0 support. Also considering there was the flood etc. Nothign to worry about.
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February 5, 2012 6:42:41 AM

I'm not worried, I just want to understand what exactly it means. So current USB 3 data is passing through PCIe data lanes? Does that mean current USB3 are functioning at 50% of their theoretical max? Or 75%. Or 99.5%?

I would like more info then just "This will have USB 3 native support and this will not."
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February 5, 2012 8:39:24 AM

usb 3.0 will have max throughput. but... it may mean that if the usb ports are even recognised in bios a x4 pci-e slot will become x1, or you may lose other functionality, like esata. sometimes the choices will be either-or in bios, not on the fly at time of use. does that help.
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February 5, 2012 2:36:03 PM

13thmonkey said:
usb 3.0 will have max throughput. but... it may mean that if the usb ports are even recognised in bios a x4 pci-e slot will become x1, or you may lose other functionality, like esata. sometimes the choices will be either-or in bios, not on the fly at time of use. does that help.


It's quite good enough, thank you.
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February 5, 2012 2:36:13 PM

Best answer selected by PTNLemay.
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February 5, 2012 7:15:40 PM

This topic has been closed by Mousemonkey
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