The next generation of AMD gaming CPUs is the last generation of AMD gaming CPUs. With astronomical RAM prices gatekeeping gamers from upgrading, the chipmaker has released its former best-in-class AMD Ryzen 7 5800X3D for a price better than whatever you’ll find on eBay. You can nab one of AMD’s Ryzen 7 5800X3D rehashes starting June 25, starting at $350. To put that price tag into perspective, it’s $100 less than the card cost at launch in 2022. A current-gen Ryzen 7 9850X3D —the chipmaker’s current best gaming CPU for AM5 motherboards—has a suggested list price of $500. The 5800X3D first launched in 2022, just a few months before AM5 socket motherboards hit the scene. © AMD Old is new again in other ways, too. AMD is preparing to launch the Ryzen 7 7700X3D, another eight-core, 16-thread previous-gen chip for the AM5 socket, priced at $330, on July 15. AMD called the chip its “entry point” for AM5. You may be wondering: why does a 4-year-old chip cost more than a more recent Ryzen 7000-series CPU?…