AMD board partners begin selling 4GB Radeon R9 390s in China
 

When AMD debuted its Radeon R9 300-series cards, one of the major draws of the range-topping, Hawaii-powered R9 390 and R9 390X was the 8GB of GDDR5 memory on both of those products. Now, it appears that AMD's board partners are selling 4GB versions of the R9 390—in China, at least.

http://techreport.com/news/29427/amd...-390s-in-china