The newly-developed 8Gb LPDDR5 is the latest addition to Samsung's premium DRAM lineup, which includes 10nm-class 16Gb GDDR6 DRAM (in volume production since December 2017) and 16Gb DDR5 DRAM (developed in February).
10nm-class is a process node between 10 and 20 nanometers.
"This development of 8Gb LPDDR5 represents a major step forward for low-power mobile memory solutions," said Jinman Han, senior vice president of Memory Product Planning & Application Engineering at Samsung Electronics. "We will continue to expand our next-generation 10nm-class DRAM lineup as we accelerate the move toward greater use of premium memory across the global landscape."
The 8Gb LPDDR5 boasts a data rate of up to 6,400 megabits per second (Mb/s), which is 1.5 times as fast as the mobile DRAM chips used in current flagship mobile devices (LPDDR4X, 4266Mb/s). With the increased transfer rate, the new LPDDR5 can send 51.2 gigabytes (GB) of data, or approximately 14 full-HD video files (3.7GB each), in a second.
The 10nm-class LPDDR5 DRAM will be available in two bandwidths - 6,400Mb/s at a 1.1 operating voltage (V) and 5,500Mb/s at 1.05V. This performance advancement has been made possible through several architectural enhancements. By doubling the number of memory "banks" - subdivisions within a DRAM cell - from eight to 16, the new memory can attain a much higher speed while reducing power consumption. The 8Gb LPDDR5 also makes use of an advanced, speed-optimized circuit architecture that verifies and ensures the chip's performance.
To maximize power savings, the 10nm-class LPDDR5 has been engineered to lower its voltage in accordance with the operating speed of the corresponding application processor, when in active mode. It also has been configured to avoid overwriting cells with '0' values. In addition, the new LPDDR5 chip will offer a 'deep sleep mode', which cuts the power usage to approximately half the 'idle mode' of the current LPDDR4X DRAM. Thanks to these low-power features, the 8Gb LPDDR5 DRAM will deliver power consumption reductions of up to 30 percent, maximizing mobile device performance and extending the battery life of smartphones.
Based on its bandwidth and power efficiency, the LPDDR5 will be able to power AI and machine learning applications, and will be UHD-compatible for mobile devices worldwide.
Samsung, together with global chip vendors, has completed functional testing and validation of a prototype 8GB LPDDR5 DRAM package, which is comprised of eight 8Gb LPDDR5 chips. Leveraging the manufacturing infrastructure at its latest line in Pyeongtaek, Korea, Samsung plans to begin mass production of its next-generation DRAM lineups (LPDDR5, DDR5 and GDDR6).