While ramping up production, the company must take into account the already recognized shortages of RAM. GDDR5 and HBM2 – the two main types of memory used in its RX 400, 500 and the new RX Vega graphics cards – are also undersupplied. In that respect, AMD’s management assured investors and customers it would work with its partners to overcome the deficit.
Източник: Наш човек Lubomir Tassev в Bitcoin.com

https://news.bitcoin.com/amd-increases- ... ng-demand/