comes up with this for my mechanical drive--would say its the rated speed


Device Properties ST3250620NS
Driver Description
Driver Date 21/06/2006
Driver Version 6.1.7600.16385
Driver Provider Microsoft
INF File disk.inf

Disk Device Physical Info
Manufacturer Seagate
Hard Disk Name Barracuda ES 250620
Form Factor 3.5"
Formatted Capacity 250 GB
Disks 2
Recording Surfaces 3
Physical Dimensions 146.99 x 101.6 x 26.11 mm
Max. Weight 720 g
Average Rotational Latency 4.16 ms
Rotational Speed 7200 RPM
Average Seek 8.5 ms
Track-To-Track Seek 0.8 ms
Interface SATA-II
Buffer-to-Host Data Rate 300 MB/s
Buffer Size 16 MB

Device Manufacturer
Company Name Seagate Technology LLC
Product Information http://www.seagate.com/products