The alleged AD102 RTX 4000-series PCB presented by Igor's LAB reveals memory configurations with up to 24 GB GDDR6X VRAM, pin layouts featuring the PCIe 5.0 standard, 28-phase voltage supply, and 3-slot or 3.5-slot air cooling solutions, plus possible AIO and water blocks straight from the factory.
https://www.notebookcheck.net/Leaked-Nvidia-RTX-4000-series-PCB-design-confirms-600-W-TGP-reveals-VRAM-configurations-power-delivery-scheme-and-cooling-solutions.609987.0.html