Samsung already has mass production

Chaps from the memory manufacturers that like to talk to Fudzilla have confirmed that 8Gbit GDDR5 memory will hit volume production in the second half of 2016.

Too expensive, limited supply

Our well-placed industry sources have told us that we should not expect to see the HBM 2.0 based GPUs shipping anytime soon. Nvidia Pascal and AMD Polaris 10 / 11 will stick with GDDR5 memory for the time being.

Exclusive: Highest end are HBM 2.0, GDDR6, GDDR5X

AMD over-hyped the new  High Bandwidth Memory standard and now the second generation HBM 2.0 is coming in 2016. However it looks like most of GPUs shipped in this year will still rely on the older GDDR5.

16GB+ graphic cards possible 

Samsung has announced that is has started the mass production of its 8 Gb GDDR5 chips in 20nm.

DDR3 only, no surprise