I have an HP Elitebook 8470w connected to an Inateck USB 3.0 to SATA Docking Station with a Crucial 64gb M4 SSD plugged into it.
So why am I seeing un-cached sequential read speeds of only ~30MB/s?
Edit - I discovered I had the drive connected to a USB 2.0 port on the laptop. When connected to the USB 3.0 port I'm now seeing closer to ~170MB/s which is still a long way from the ~410MB/s I was expecting.
A response from the dock manufacturer (Inateck) clears a few things up:
You use the natively embedded generic Intel host controller, comprising a simulated PCI-E v1.0 interface, which it does not feature actually. But still, the PCI-E bridge is now determined to be the bottleneck, which means with the simulated revision version, the highest bandwidth your interface can reach should be 250 MB/s. Therefore, the 170 odd MB/s stays well within realistic parameters.
Still, I'm sorry about this situation, as it can't be helped directly, safe for a possible firmware update and BIOS flash, apart from the reconfiguration of the SSD formatting, converting to 4k sector alignment, or even resetting all sectors to "0" on it. That at least should speed things up a tad.
