Sony and Microsoft are reportedly preparing for a PlayStation and Xbox handheld competition in the PS6 generation.Microsoft executive Phil Spencer has hinted at plans for an Xbox handheld, while Sony's interest in portables has been renewed.Rumors suggest that Sony plans to use AMD hardware for its PS6 gen handheld, while Microsoft is still deciding between Qualcomm and AMD.The PS6's CPU is yet to be decided, with options being ZEN4 or ZEN5, causing concerns over potential outdated technology at launch.