Just last month Samsung unveiled the Galaxy Note 5, the first mainstream smartphone to pack 4GB of RAM. Many could consider that overkill, but now the company is pushing toward a new goal, 6GB. Samsung has just announced that they will begin mass-production of 12Gb LPDDR4 DRAM modules which translate to about 1.5GB per module. With four of these modules stacked, you could easily pack 6GB of RAM in a smartphone with no more area than is currently taken up.
The new DRAM is also much faster with a 30% increase in speed and 20% energy use reduction. Samsung already teased that upcoming flagships (undoubtedly the Galaxy S7 or Note 6) will offer 6GB of RAM when they are released.Source: Samsung Tomorrow