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posted by FatPhil on Tuesday September 28 2021, @01:24AM   Printer-friendly
from the chip-crisis?-what-chip-crisis? dept.

Blazing fast PCIe 5.0 SSD prototype hits sequential read speeds of 14,000 MB/s:

Advancements in the storage segment are the unsung heroes in today's world of computing. While many users tend to focus on the speed of their CPU, GPU or even the higher refresh rate of their displays, the increasingly quick solid state drives are in part responsible for the performance improvements of Sony's and Microsoft's next-gen consoles. But while the PlayStation 5 and Xbox Series X/S rely on PCIe 4.0 SSDs, a Japanese memory manufacturer is already finalizing the development of its blazing fast PCIe 5.0 storage solutions.

In a recent presentation, Kioxia has now revealed how quick PCIe 5.0 SSDs can truly be. While the throughput of the PCIe 5.0 interface at 32GB/s per lane is exactly twice as high compared to PCIe 4.0, the company's first prototype has apparently reached sequential read speeds as high as 14,000MB/s. That is also twice as fast as Kioxia's currently top of the line PCIe 4.0 drive.

Even though these read speeds certainly seem impressive, the write speeds of Kioxia's PCIe 5.0 SSD are similarly spectacular. The official benchmark says the drive can reach sequential write speeds of 7,000MB/s, which is a 67% improvement to the predecessor. Overall, these speeds seem to be absolute overkill for most use cases, which is why these drives are intended for use in a professional server setting. Nevertheless, the rapid advancements in storage speeds certainly deserve more attention than the often incremental upgrades in the CPU and GPU sector.

Of course, there's more to storage than speed, there's reliability, for example. Would any gamers want to prove the "professional server setting" assumption wrong?

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  • (Score: 3, Informative) by krishnoid on Tuesday September 28 2021, @04:48AM (1 child)

    by krishnoid (1156) on Tuesday September 28 2021, @04:48AM (#1182102)

    They do, but as a result, tagged command queueing [] somehow still stayed valuable:

    • With hard disk drives that are really slow, having a queue of requests means the block requests could be satisfied in one or two passes by reordering them to follow the path of a single drive head sweep while the platter was rotating
    • With solid state drives that are really fast, having a queue of requests means multiple block requests can be satisfied immediately if the memory/controller is fast enough, since it's all random access anyway

    I think there's some fundamental wisdom about the "queueing" concept here, but I don't know excatly how you'd word it.

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  • (Score: 1, Interesting) by Anonymous Coward on Wednesday September 29 2021, @07:16AM

    by Anonymous Coward on Wednesday September 29 2021, @07:16AM (#1182652)

    Almost all disks now use NCQ not TCQ. NCQ is important because SSDs are so fast that instead of the host waiting on the drive the drive often has to wait for the host. That leads directly into the major improvement that SSDs offer by using NVMe is that you can now have multiple queues that are much longer than with HDDs. This means that they don't have to sit and wait for the host as much and also allows for the SSD to run almost all actions concurrently and make more operations parallel because the requests made can match the internal architecture of both the SSD and the host system it is in better.