AMD Ryzen 4000H Renoir Block Diagram Confirms GPU PCIe 3 Limitation For Gaming Laptops by Paul Lilly — Thursday, July 23, 2020, 11:03 AM EDT Comments ...

Block diagram of an Nvidia AD102 GPU. Notice how much more repetitive this is?Credit: Nvidia GPUs, even integrated GPUs, commonly offer dozens to hundreds of cores.

AMD says that these stream processors are four times as fast as RDNA2. As you can see to the lower left block, it connects over PCIe gen 4.0. AMD Navi 31 GPU Block Diagram Leaks, indeed PCIe gen 4.0 ...

The new block diagrams are courtesy of leaker Olrak. AMD's next-gen Navi 31 and Navi 32 will reportedly be MCD (multi-chip designs) while Navi 33 will continue on being a monolithic GPU design.

AMD APUs like the 8700G have a 65W TDP (shared between CPU and GPU), while discrete graphics cards commonly have TDPs between 150W and 450W.