7200 rpm v. 5400 rpm hard drives

[NSchandler]

I remember reading a while ago in this forum that some people were saying that a faster hard drive could help improve performance when running pokertracker. How much of a difference is this going to make? Will it be a considerable jump in performance?

Let me put it this way - I'm buying a laptop, and I'm either going to upgrade from 512 MB to 1 Gig of RAM, or upgrade my hard drive from 5400 rpm to 7200 rpm. Which would help performance more?

Thanks for your help.