As per @ajstringham who is onsite right now:
A.J. Stringham
Has a 500GB SATA that I believe is 7200RPM but not sure. Has a data drive that's a 250GB. I don't believe that's an SSD and it's not being used at all. I thought about an I/O issue but haven't had a chance to benchmark it yet. Machine is only two years old. Could it be a 5400RPM? Possibly. I doubt it though. But I can't give you a definitive answer at this point. The inventory doesn't show the specs on the drive so I'll have to get back to you.
3:55 PM
I looked at the BIOS version and it's on A13. Dell's website gives the latest as A17. I looked through each of the newer versions (A14, 15, 16 and 17) and the only thing that would even be remotely relevant is there is an enhancement of optimize high I/O performance in the setup menu of Dell. So I will flash the BIOS tomorrow and see if that helps but based on the release notes I don't see that being the solution.