Huh. This discussion is more pointless than I thought. There's already the Radeon 680M, built into the Ryzen 7 6800U and up, RDNA2 with 12CU, 768 pipelines. And it's little brother Radeon 660M, with half the cores.
That's your dream of a big APU right? It's definitely bigger than the 5600G's iGPU.
Performance, compared with a $200 card:
https://www.notebookcheck.net/Radeon-RX ... 598.0.html
And vs 5600G's Vega 7:
https://www.notebookcheck.net/Vega-7-vs ... 598.0.html
It's not bad really, good enough for gaming and better than Steam Deck's 8 CU APU. But scaling between 6CU and 12CU isn't linear, it's only 44% faster in Time Spy, so making it even bigger is a waste of silicon without getting better DRAM. Compare it with a $200 card though, like the 6500 XT / Navi 24, and it is very badly beaten. The biggest iGPU is half as fast as a $200 card, so it's worth maybe $100 to a desktop user.
The question is, does AMD think this is what users want on a desktop? If it costs $100 more than a no/small iGPU, then it's pointless, you can grab basically any cheap dGPU right now and match the Radeon 660/680M, and $200 is twice as fast as the 680M.
And by the time the next desktop APU is released, the $200 RDNA3 "Navi 34" card will kick the Navi 24 little brother's ass. It's a moving target and there is very little space between budget APU, little bit more premium APU (like those 12CU laptop chips) and the cheapest discrete cards.
~~~
New series for Zen 4 confirmed so far:
Ryzen 7000 / Raphael, the next desktop chip with Zen 4, is
rumored to come with 4 CU of RDNA2. So that's even slower than the R660M.
Ryzen 7000H / Dragon Range, the next high end laptop chip, Zen 4 + RNDA 3, low CU count. Makes more sense than putting the biggest iGPU in 6900H, those laptops always come with an RTX 3070/3080 right now.
Ryzen 7000H/U / Phoenix (Point), thin and light laptop chip, Zen 4 + RNDA 3, high CU count, for laptops without dGPU.
I doubt they will add a desktop APU to the lineup. For laptops it makes sense. For things with a power cord, not so much. Can they put a Phoenix Point APU on a socket and sell it for $100 more than Raphael? Maybe. Is the market big enough to be worth it? Roadmap (from last Q's financial report presentation) says no.