New specs leak just dropped:
T239 SoC
TSMC N4 node process (4 nanometre?)
8-core A78C CPU, clock rates unknown, don't know what's meant by GA10F (this could be the GPU line)
12 stream multiprocessor GPU, performance ranging from 3.5 to 4.5 TFLOPs docked and 1.7 to 2.0 TFLOPs handheld
12 or 16GB RAM, LPDDR5 DRAM
100GB/s memory bandwidth docked and 88GB/s handheld
Memory cache specifics uncertain, Tegra GPU cores may be able to access CPU cache
Display is 8" screen with 1080p and 60hz refresh rate
Internal storage either 256 or 512GB
Cartridge specifics unknown, but 3D-NAND may provide a cost-effective way to significantly increase storage
Expanded/external(?) storage and battery details remain unknown
https://universonintendo.com/artigo-tecnico-quais-configuracoes-poderiamos-ter-no-proximo-hardware-nintendo/