There, indeed, has been a shortage of GDDR6 as of late (2020-2021), which has limited the supply rate for both Nvidia RTX 30 Series and Radeon RX 6000 Series GPUs. There are several reasons why we may be experiencing this shortage. Firstly, almost all current-generation GPUs use GDDR6; with the exception of some high-end Nvidia GeForce RTX 30 Series GPUs.