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Western Digital WD_BLACK SN850 NVMe PCIe 4.0 SSD Linux Performance

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  • Western Digital WD_BLACK SN850 NVMe PCIe 4.0 SSD Linux Performance

    Phoronix: Western Digital WD_BLACK SN850 NVMe PCIe 4.0 SSD Linux Performance

    This month Western Digital introduced the WD_BLACK SN850 as the latest PCI Express 4.0 solid-state drive hitting the market. The WD_BLACK SN850 is a surprisingly strong performer if looking to upgrade to PCIe 4.0 solid-state storage, competing with the fastest of the consumer drives currently available.

    http://www.phoronix.com/vr.php?view=29746

  • #2
    TIL: The WD drive is pretty darn good. The Samsung is trash. The Crucial drive is probably a good deal price/performance wise.

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    • #3
      Originally posted by phoronix View Post
      Phoronix: Western Digital WD_BLACK SN850 NVMe PCIe 4.0 SSD Linux Performance

      This month Western Digital introduced the WD_BLACK SN850 as the latest PCI Express 4.0 solid-state drive hitting the market. The WD_BLACK SN850 is a surprisingly strong performer if looking to upgrade to PCIe 4.0 solid-state storage, competing with the fastest of the consumer drives currently available.

      http://www.phoronix.com/vr.php?view=29746
      Typo in the article: Samsung 980 PRO isn't QLC-based. It uses TLC with a SLC cache.

      Overall, the Samsung 980 PRO numbers presented in the article are not credible. According to other reviews, 1TB Samsung 980 PRO has a sustained write performance of 2 GB/s - not 150 MB/s.

      https://www.anandtech.com/show/16087...e-4-ssd-review

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      • #4
        Would like to see same benchmarks with F2FS and with F2FS+compression

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        • #5
          Why does the Samsung suck that much? The Pro line used to be good...
          ## VGA ##
          AMD: X1950XTX, HD3870, HD5870
          Intel: GMA45, HD3000 (Core i5 2500K)

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          • #6
            Originally posted by atomsymbol View Post

            Typo in the article: Samsung 980 PRO isn't QLC-based. It uses TLC with a SLC cache.

            Overall, the Samsung 980 PRO numbers presented in the article are not credible. According to other reviews, 1TB Samsung 980 PRO has a sustained write performance of 2 GB/s - not 150 MB/s.

            https://www.anandtech.com/show/16087...e-4-ssd-review
            As far as I remember from 980 Pro reviews it totally depends on if the SLC cache has cleared out. If the review runs a large write test at any time, it could fill up the cache. It takes an unknown amount of time, but at least a couple of minutes, to be sure that the SLC has flushed out all of the writes.

            The 980 Pro performance is dire if you fill the cache and continue to write. Puts its "Pro" designation in doubt.

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            • #7
              Originally posted by Zan Lynx View Post

              As far as I remember from 980 Pro reviews it totally depends on if the SLC cache has cleared out. If the review runs a large write test at any time, it could fill up the cache. It takes an unknown amount of time, but at least a couple of minutes, to be sure that the SLC has flushed out all of the writes.

              The 980 Pro performance is dire if you fill the cache and continue to write. Puts its "Pro" designation in doubt.
              You are right, but that is applicable mostly to the 250 and 500 GB models of 980 PRO. The 250 GB model should be able to sustain sequential writes of at least 500 MB/s at any given time, but in this Phoronix article the write speed is just 150 MB/s for the 1TB model. The 1TB model has 2 GB/s sequential write performance in the worst-case (500 GB: 1 GB/s in the worst case, 250 GB: 0.5 GB/s in the worst case).

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              • #8
                Originally posted by darkbasic View Post
                Why does the Samsung suck that much? The Pro line used to be good...
                If the low performance is reproducible in e.g. CrystalDiskMark in Windows 10, then it should be possible for Michael to replace the faulty SSD with a new one at no cost at the seller.

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                • #9
                  Originally posted by atomsymbol View Post
                  Overall, the Samsung 980 PRO numbers presented in the article are not credible. According to other reviews, 1TB Samsung 980 PRO has a sustained write performance of 2 GB/s - not 150 MB/s.
                  this article shows 980's sequential write faster than others at 4726 mb/s.

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                  • #10
                    subj looks like good contender for the spot between optane and hdd in storage hierarchy. but i'll wait for results of products on phison e18, which should be available in december

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