Samsung has begun mass production of the industry's first 12Gb LPDDR4 DRAM dies for mobile devices, fabricated on its 20nm manufacturing process. The new chips, which offer a 50 percent greater density than existing 8Gb dies, will allow manufacturers to offer mobile devices with more RAM than a mainstream laptop: 6GB, with four 12Gb dies in a single DRAM chip package.
Phones like Samsung's own Galaxy Edge 6+ currently top out at 4GB, with 3GB being more common, even on high-end devices. Aside from increasing the amount of memory, the higher density of Samsung's new 12Gb memory chips mean that devices with 3GB of RAM would only need to use two stacked memory dies instead four, saving precious millimetres of Z-height.
Samsung says its new 12Gb chips are also 30 percent faster than their 8Gb counterparts, with a per-pin speed of 4266Mbps, resulting in 34Gbps of bandwidth over a 64-bit bus. Android 5.0 Lollipop, which was released last November, introduced support for 64-bit architectures and greater than 3GB of RAM. Despite this, few phones have actually ended up sporting more than 3GB.
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