Samsung announces first 8GB LPDDR5 DRAM for smartphones

Doris Richards
Июля 17, 2018

Samsung announced that it had developed the industry's first 10nm-class 8Gb LPDDR5 DRAM.

The company and leading chip vendors have tested an 8GB RAM package with eight of its LPDDR5 chips. The 16Gb GDDR6 DRAM has been in volume production since December 2017, and the 16Gb DDR5 DRAM was developed in February. Firstly, it has a maximum data rate of up to 6400Mbps at 1.1V, which Samsung claims to be about 1.5 times faster than the current LPDDR4X memory standard.

While some phones such as the OnePlus 6 and Razer Phone now have 8GB of RAM, most big name manufacturers have so far stuck with 4GB or 6GB in their flagships, and that includes Samsung, but there's evidence that it could move to 8GB soon, perhaps even for the Samsung Galaxy S10. 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. Most, if not all, mobile devices such as smartphones, tablets, and Ultrabooks, employ some sort of low-power DDR (LPDDR) memory.

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Samsung will release the 10nm LPDDR5 DRAM chips in two variants-a 6,400 Mb/s chip operating at 1.1V and a slightly slower 5,500 Mb/s chip that runs at 1.05V. In addition, the "memory banks" of the company's latest DRAM is now doubled to 16. It's also said to make use of a "highly advanced, speed-optimized circuit architecture that verifies and ensures the chip's ultra-high-seed performance".

As expected, the LPDDR5 chip comes with several low-power features that reduce power consumption by up to 30%.

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 has been configured to avoid overwriting cells with "0" values. Compared to LPDDR4X, the power consumption during idle mode is reportedly cut in half. It will be UHD-compatible for mobile devices worldwide as well.

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