ASUS GeForce RTX 4090 might be a good choice if you're building a gaming PC. It has a 24 GB GDDR6X memory. The size of this card means it requires 3.65 slots.
From Amazon
ASUS TUF Gaming GeForce RTX 4090 Gaming Graphics Card (PCIe 4.0, 24GB GDDR6X, HDMI 2.1a, DisplayPort 1.4a)
Overclockers
Asus GeForce RTX 4090 TUF 24GB GDDR6X PCI-Express Graphics Card