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Usb 3.0 usb pci speed

Tags:
  • PCI
  • USB
  • USB3
  • Storage
Last response: in Storage
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August 14, 2011 5:58:00 AM

Is a 3.0 usb pci card going to be just as fast as a mobo us 3.0 port or will the speed be between 2.0 and 3.0?

More about : usb usb pci speed

a c 415 G Storage
August 14, 2011 3:55:17 PM

It depends on what kind of PCIe interface the card has. A single-lane PCIe V1.x interface has a throughput of 250MByte/sec, so that would limit the potential maximum speed of the card. But keep in mind that even the fastest USB 3.0 hard drive will only have a maximum transfer rate of somewhere around 150MByte/sec, not matter how the USB 3.0 port is connected to the system.
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