The majority of sport software will run on a computer that was built in the time of the ark. ONSW has a computer that was bought in 2006 and it is still useable.
So the processing speed , memory are not that important. I would suggest that you have 2-3 usb ports. You need one for the master unit and one for say a printer and then depending if you come from the age of the dinosaur, like me, a usb to connect your mouse!