If you have questions about specific processors and how they affect ProTools performance, contact Sweetwater Sound and ask them. They stay up-to-date with all that.
I know nothing about those particular models nor how PCs spec out these days in general. But a good idea is to get the most powerful processor you can afford and load the machine to the max with extra memory. At a minumum, read the system requirements, then double it if you can.
Well I picked up a Laptop, a Dell at a computer show for a fair price and put in 1.2gig of ram. I still have to learn how to use ProTools, but a quick little tune with 6 tracks went down smoothly. I must learn how to record with class tho... Thanks for the input. John