NVIDIA GeForce RTX 3090 could be the new Titan with 384-bit 24 GB GDDR6X VRAM and 350 W TGP; GA102 Founders Editions cards with an expensive cooling system to be based on
RTX 3090 - back vram active cooling mod : r/overclocking
3090 (Kingpin & others!) - Get that backside VRAM cool!
Exploring the Nvidia RTX 3090 VRAM Overheating Issue - YouTube