Before upgrading the old hard disk, we timed our Sony Vaio FW11E and it took exactly 60 seconds to boot to the Windows login screen. After cloning the hard disk and booting (from cold, just as with the hard disk test) from the SSD, we saw the Windows login screen in just 19 seconds. We weren't expecting such a huge improvement: that's three times quicker.
As you can see from the Crystal Disk Mark results below, the Crucial M4 is vastly faster than the Hitachi 5K250 it replaced. The disk span at just 5,400rpm, which is typical of laptop hard disks.
First: the results from the Hitachi:
And, the figures we hoped we'd see: the Crucial M4: