RDNA 3 was not as efficient as expected. Sure higher performance but it also needed higher power. Maybe RDNA 4 or 5. Also important is the fact that Valve would try to avoid using any chip based on a new leading edge node. The fact that steam deck is on an older RDNA 2 architecture based on 7nm node is one of the reasons it’s so cheap.
RDNA 3 was not as efficient as expected. Sure higher performance but it also needed higher power. Maybe RDNA 4 or 5. Also important is the fact that Valve would try to avoid using any chip based on a new leading edge node. The fact that steam deck is on an older RDNA 2 architecture based on 7nm node is one of the reasons it’s so cheap.