Conclusion

The Intel Optane SSD 900P is an amazing piece of technology, but one whose benefits are difficult to fully enjoy. Its 3D XPoint memory enables it to break almost all the performance records, but some where difference to Optane SSD performance is too small to justify paying more than twice the price per GB. However, there are some scenarios where the Optane SSD absolutely blows away the competition and justifies its premium.

The low queue depth random read performance of the Optane SSD is several times faster than any flash-based SSD has attained. Mixed workloads that include a substantial component of random read operations also perform quite well, and throwing some write operations into a stream of reads barely impacts the read performance.

The Optane SSD 900P has enough space to be used as general-purpose storage, and larger capacity models can be introduced as necessary. There's no need to tangle with Intel's caching software and its associated platform lock-in as with the Optane Memory modules.

The biggest problem the Optane SSD 900P faces today is that few desktop users have workloads that stress the storage system enough for the Optane SSD to shine. Mechanical hard drives have not disappeared from use as primary storage, and most software for desktop and workstation use is still designed with their performance limitations in mind. If budget SSDs had relegated hard drives to backup and archival use years ago, then the software landscape would probably be more ready to take advantage of the speed offered by the Optane SSD 900P. Instead, the Optane SSD as a consumer/prosumer product only makes sense in a few niches. Most users- even those with relatively intense storage performance needs - will be better served by high quality flash SSDs like the Samsung 960 PRO.

The price of the Intel Optane SSD 900P is accessible enough that many enthusiasts will pay the premium to have the bragging rights of the fastest SSD money can buy. Workstation users who have massive datasets that don't fit in RAM will jump at the chance to buy a faster scratch drive. And if that isn't enough to clear the shelves, then enterprise customers who need high performance but don't need the extreme write endurance of the Intel Optane SSD DC P4800X can get the 900P with its solid 10 DWPD endurance rating for a third the price per GB. The Optane SSD 900P isn't for everybody, but it will nonetheless be a successful product, and Intel won't have any trouble selling them.

The long-term prospects for Intel's Optane SSDs look pretty good, too. The pricing doesn't leave Samsung a lot of room to introduce a Z-NAND based consumer SSD. No other alternative nonvolatile memory technology is close to being ready to challenge 3D XPoint. Intel could improve the sequential transfer speeds, but they're good enough for now. They'll need to deliver a big jump in performance when they adopt PCIe Gen 4, but that shouldn't be a challenge: increasing the controller's channel count from 7 to the 12 channels used by their current NAND flash controller or the 18 used by their first NVMe controller will bring plenty of extra throughput. The only question will then be over the power consumption. The latency is already close to being as low as possible over a PCIe link, and NVDIMMs with 3D XPoint won't be making Optane SSDs obsolete in the consumer market anytime soon. 

In many ways, the performance profile of the Optane SSD is far simpler than that of NAND flash based SSDs. The Optane SSD 900P performs just as well when it is full as when it is almost empty. It performs quite consistently over time, with far fewer high-latency outliers thanks to the lack of garbage collection stalls. Unlike with flash-based SSDs, it is not necessary to buy the largest model to get the highest possible performance; the 280GB model we tested should be very similar to the 480GB model (which we're waiting for review). It doesn't matter whether TRIM commands are used, and it's never necessary to perform a secure erase operation to restore degraded performance.

Intel has almost taken all the fun out of testing a SSD.

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  • Lolimaster - Saturday, October 28, 2017 - link

    The past is the past, few years ago, a 20GB HDD cost $200 so?
  • btb - Saturday, October 28, 2017 - link

    Does the Optane 900P have support for hardware based Bitlocker encryption?

    Currently I have a motherboard with a TPM, and an SSD with Microsoft eDrive/TCG Opal/IEEE 1667 support, and thus support for hardware based(not software) Bitlocker.

    Would the Optane work in a similar manner, if I use it as a boot drive?
  • voicequal - Saturday, October 28, 2017 - link

    Mixed reads & writes are a significant weak spot for SSD performance, where a sequential write workload can degrade a sequential read workload and vice versa. It looks like Optane has completely resolved this (no more bathtub curve). It would be interesting to see a mixed sequential test with QD > 1, so that both read & write requests are in the queue. In theory, throughput could be 2x under 50/50 mixed workloads if Optane is fast enough to saturate the full duplex paths, like the PCIe bus, in both directions.
  • evilpaul666 - Saturday, October 28, 2017 - link

    I ordered a 480GB AIC version from the popular online vendor. I was surprised it was actually available. Seems to be bucking a trend this year.

    Hopefully, Intel ironed out the bugs and there won't be crashes until multiple firmware updates over the next year.

    Anecdotally, I've heard good things about improved UX. I'll find out in a few days. It's replacing an Intel 750 400GB from about two years ago.
  • Mikewind Dale - Saturday, October 28, 2017 - link

    This is awesome. But what excites me most is using XPoint to replace RAM.

    I wonder, can we get an approximate simulation of what that world could be like, by making a system with a deliberately minuscule amount of RAM, installing a 32 GB Optane module, and setting the Windows page file to be on that Optane module? I'd be interested to see some benchmarks.
  • evilpaul666 - Saturday, October 28, 2017 - link

    There was a demo of a system with only 4GB RAM that was supposed to have had good results.
  • "Bullwinkle J Moose" - Saturday, October 28, 2017 - link

    Would System Start-up be any faster?
    ---------------------------------------------------
    Faster that what? Apples to Bannana's?

    A 35 Watt Dualcore Sandy bridge will boot a fresh install of Windows 10 Fall Crapper Edition (Sept 2017) in 5.35 seconds to a Samsung 850 Pro

    or, the same computer will boot a fresh install of Windows XP-SP2 in 3 - 4 seconds (it varies every boot)

    Then, I've seen people bragging on youtube for booting new 90+ Watt Quadcore machines to Windows 10 on an M.2 drive in 17 seconds

    So, wutz your opinion?
    How fast is fast ?
  • cheshirster - Sunday, October 29, 2017 - link

    Those prices are FAKE.
  • CaedenV - Sunday, October 29, 2017 - link

    Come on Intel! Storage isn't what this tech is made for! This was supposed to have faster throughput and act as a RAM replacement, not SSD replacement! Being able to replace RAM and storage with something that is slightly slower than RAM, but the capacity of a large SSD would have huge benefits. Imagine 'launching' a program and all that needs to be done is to flip a flag from inactive to active and your whole program is up and running. No loading from the HDD/SSD into RAM, just activate a section of memory and update the windows registry keys if needed. Having direct HDD/SSD access to the CPU without needing to load into RAM first. These would be huge advantages. But instead Intel saw that it wasnt going to be good enough for that so they released what they had as a way to cash in and make up for all of the wasted R&D on this tech over the years.

    Granted; it is not ALL bad. For consumers this would be like burning money. But for business use this is amazing tech. At my work we have a huge document management system with some ~6 million documents in it, and 200+ users running searches on them all the time. On HDD these searches would take just over a minute. We recently moved the search cache to SSDs which dropped the search time down to ~10-20 sec. With Optane we could lower it to near instant search times. Not going to do it any time soon, but there is absolutely a market for this kind of tech in the business IT world. I just don't understand why Intel is marketing it to gamers.
  • Reflex - Sunday, October 29, 2017 - link

    To be fair, the software ecosystem is a decade or more behind the concept of unified memory. Even if this was a capable RAM replacement today, nothing could take advantage of it, and wouldn't be able to for a very long time.

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