This Zotac graphics card might be a good choice if you're building a gaming PC. It has a 24 GB GDDR6X memory.
From Quzo
Zotac GeForce RTX 4090 Trinity OC White Edition NVIDIA 24 GB GDDR6X
Overclockers
Zotac GeForce RTX 4090 Trinity OC White 24GB GDDR6X PCI-Express Graphics Card
Clove Technology
Zotac GeForce RTX 4090 Trinity OC White Edition NVIDIA 24 GB GDDR6X Graphics Card