The problem is that the latest technologies are always very expensive
Indeed!
If you can't afford, or you don't want to spend a ridicolous amount of money for the latest stuff, the "obsolete tech" will plummet in price as soon as the new CPUs and RAM hits the market.
I dunno if I'm going to upgrade - I hope my laptop (ASUS G75VW) can run the game satisfactory, if not, I'll wait until the last possible moment.