On my Windows 7 x86 Professional with dual Western Digital Raptors in non-Raid configuration, no speed is shown at all. Plus it shows the exact same info including serial number for both Raptors, except for the temperatures.
On my Windows 7 x64 Professional with dual Western Digital VelociRaptors in non-Raid configuration, no speed is shown at all. Plus it shows the exact same info including serial number for both VelociRaptors, except for the temperatures.