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High-Speed, Energy-Efficient PCIe SSDs for Notebooks

25.01.2015

Samsung Electronics has announced the mass production of high-performance, low-power PCIe solid-state drives (SSDs) for use in today's ultra-thin laptops and workstations, the Samsung SM951.

The Samsung SM951 features high performance in both PCIe 3.0 and PCIe 2.0 interfaces. When connected to a PCIe 2.0 interface, the sequential read speed is 1,600 MB/s, the write speed is 1,350 MB/s. At the same time, the speed of the new device in this configuration is almost 30% faster than its predecessor, the Samsung XP941 model, and about three times faster than the speed of a modern SATA SSD drive. Random-access read and write performance reaches 130 and 000 IOPS (Input/Output Operations Per Second - the number of input/output operations per second), respectively.

When connected to a PCIe 3.0 interface, the Samsung SM951 achieves sequential read/write speeds of 2,150MB/s and 1550MB/s, respectively, which is about four times the sequential read speed of current SATA SSDs. When running with a PCIe 3.0 interface, the device has significantly higher power efficiency - only about 450 MB / s per watt for sequential reads and 1 MB / s for sequential writes. Thus, energy efficiency has increased by 250% compared to the Samsung XP50 SSD drive.

In addition, the Samsung SM951 is the first SSD to support the L1.2 low energy standard. The L 1.2 standard, implemented by the PCI-SIG organization, which develops standards for using the PCI bus for connecting peripherals to computers, allows you to turn off all high-speed circuits when the computer is in sleep or hibernation mode. With the adoption of the L1.2 standard, sleep mode power consumption is reduced by 97% compared to the L1 standard, from 50mW to 2mW.

The Samsung SM951 is made in a compact M.2 form factor, its size is only 80mm x 22mm - that is, about 17 times smaller than a standard 2,5-inch SSD. In addition, it weighs only about six grams. Suitable for most laptops, this compact design frees up space for other components, including batteries.

The Samsung SM951 line of SSDs is available in 512, 256 and 128 GB versions.

With the release of the Samsung SM951 and other PCIe SSDs based on the 10nm class MLC NAND flash platform, Samsung plans to rapidly expand the global PCIe SSD market. Samsung will also be working on next-generation PCIe SSDs that support the NVMe interface, further enhancing performance.

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