As Microsoft showed off its new Xbox One X at this year's E3, Sony's presentation focused primarily on its lineup of games. That's because its own powered-up console, the PlayStation 4 Pro, already debuted last fall to good reviews (with one big caveat). While many players will base their purchases this holiday season on each system's titles and online services, there's still a lot to be learned in comparing the two systems' specs -- especially if you want something to play on a 4K TV. Check out our chart below, and stay tuned for when we put the new Xbox through its paces, closer to launch.