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Marvell sends three PCIe 4.0 SSDs in succession: not fast but most power-saving

via:快科技     time:2019/8/2 21:39:08     readed:1782



Marvell 88SS13 Series Master ControlTSMC 12 nm FFC process manufacturing, integration of three Cortex-R5 CPU core, support four flash channels(today the mainstream is usually eight), data transfer rate 1200 MT ≤ s, maximum flash memory capacity 2TB, support NVMe 1.3c, HMB buffering, hardware RAID, fourth generation NANDEdge LDPC error correction, end-to-end data protection, OTP,AES.

Of which,88SS1321 is the highest end, for the consumer market and entry-level data center market, supports PCIe 4.0x4, can be matched with DDR4/LPDDR3/LPDDR4/LPDDR4X cache (data bit width 32-bit), performance up to 3.9GB / s, 3.3GB / s, random read / write up to 690K IOPS,500K IOPS.

Because of its cache support, its core area is relatively large, but it is only 12 × 13. 5mm, and can even be used for the smallest M.2 2230SSD.

88SS1322, 88SS1323 are oriented to the mainstream consumer market and do not support external caches, the area is reduced to 8×11mm, where, 88SS1322 still supports PCIe 4.0x4, and random read and write speed is reduced to 500K IOPS,350K IOPS.

88SS1323 is further streamlined to PCIe 4.0 x2 (theoretical bandwidth is equivalent to PCIe 3.0 x4), performance continues to decline, continuous reading and writing 3.5 GB/s, 3.0 GB/s, random reading and writing 451 K IOPS, 300 K IOPS.

Although the speed is much slower than that of cluster E16, which can reach 5GB/s, Marvell emphasizes that their PCIe 4.0 master is the lowest in the industry.PCIe 4.0 X4 mode is less than 2W, so there is no need to exaggerate the heat dissipation, and the deep dormancy state is only about 1mW.

The new Marvell PCIe 4.0 master is in trial production and will be displayed at next month's FMS Flash Storage Conference, but the batch delivery time is uncertain. Considering that Marvell's control has been largely squeezed out of the consumer market, the new scheme is likely to dominate the OEM market.

Cluster E16 PCIe 4.0 SSD Power consumption and heating can not be underestimated

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