David,
I have used three computer system information programs in the past.
Lavalys Everest was bought out by AIDA64 and, frankly, I see no difference.
Belarc is free and should be.
I used to like the above until I found
SIW PC Inventory
http://www.gtopala.com/It is the only one that will show you your drives, let you know if they are SCSI, SATA or SAS and the speed. It lets you know a lot of things including what type of video and sound cards, etc. which can be helpful if you forget.
Unfortunately, you used to be able to get them as standalones for about $9.95 a license (life long). I bought one for each of my computers. Now, you have to get a 10-user license. They have a free version. Not sure how good it is. But, if it shows you the info on your drives, what the heck. You can wow your IT guys.
I am sure there are other ways just using your PC, but I can't think of any off the top of my head.
Even not going cheap, I wouldn't be surprise if you don't have SATA 7200 drives. (which are fine -- obviously 15K are faster but pricier).
