- Aug 29, 2006
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I looked up USB 3.0 and PCI-E.
The theoretical transfer speed of USB 3.0 is 625 MB/s, per Wikipedia.
The theoretical transfer speed of PCI-E 3.0 is 985 MB/s.
So would a 1-port USB 3.0 card be bottlenecked with a single PCI-E 2.0 lane?
Would a 4-port USB 3.0 card on which you are using 4 drives need 4 lanes of 3.0?
Did I get lost in the arithmetic somewhere, or is a single-lane 4-port card going to be a major choke point?
The theoretical transfer speed of USB 3.0 is 625 MB/s, per Wikipedia.
The theoretical transfer speed of PCI-E 3.0 is 985 MB/s.
So would a 1-port USB 3.0 card be bottlenecked with a single PCI-E 2.0 lane?
Would a 4-port USB 3.0 card on which you are using 4 drives need 4 lanes of 3.0?
Did I get lost in the arithmetic somewhere, or is a single-lane 4-port card going to be a major choke point?
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