AnandTech Storage Bench - Heavy

Our Heavy storage benchmark is proportionally more write-heavy than The Destroyer, but much shorter overall. The total writes in the Heavy test aren't enough to fill the drive, so performance never drops down to steady state. This test is far more representative of a power user's day to day usage, and is heavily influenced by the drive's peak performance. The Heavy workload test details can be found here. This test is run twice, once on a freshly erased drive and once after filling the drive with sequential writes.

ATSB - Heavy (Data Rate)

When the Heavy test is run on an empty drive, the Crucial BX300's average data rate is not quite as fast as the drives using Micron's 3D TLC with large SLC caches. The situation is very different when the test is run on a full drive: the ADATA SU800 and Crucial MX300 are far slower, while the Crucial BX300 retains almost all of its performance and ends up placing right behind the Samsung 850 PRO and EVO.

ATSB - Heavy (Average Latency)ATSB - Heavy (99th Percentile Latency)

The average latency and 99th percentile latency of the BX300 on the Heavy test are slower than most of the other drives in this bunch except the BX200. It is again very clear that the Micron 3D TLC drives have serious problems when the drive is full, but the BX300 handles that situation fine.

ATSB - Heavy (Average Read Latency)ATSB - Heavy (Average Write Latency)

The average read latency of the BX300 is faster than the Crucial MX drives and the Intel 545s, while the BX300's average write latency is slower than those, though not to a worrying degree. Samsung comes out ahead for both reads and writes, though the ADATA SU800 is competitive provided the test isn't run on a full drive.

ATSB - Heavy (99th Percentile Read Latency)ATSB - Heavy (99th Percentile Write Latency)

The 99th percentile read latency of the Crucial BX300 is a bit slower than the Samsung 850 PRO but clearly faster than any other Crucial drive and is also ahead of the Samsung 850 EVO. The 99th percentile write latency of the BX300 is about twice as high as most of its competition, though when full the MX300 and ADATA SU800 show even higher latency.

ATSB - Heavy (Power)

The Crucial BX300 is tied for second place with the Samsung 850 EVO for power efficiency on the Heavy test. The MX300 uses substantially less power when the test is run on an empty drive, but significantly more power when the test is run on a full drive.

AnandTech Storage Bench - The Destroyer AnandTech Storage Bench - Light
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  • nathanddrews - Tuesday, August 29, 2017 - link

    SSD prices at Microcenter dropped by about 25% over the weekend (850 EVO 500GB for $139) and Amazon and Newegg are also down a bit, I assume the NAND shortage is over? Just clearing inventory? I'm really happy to see MLC back in the mix! Time to upgrade the last of the mechanical computers...
  • ddriver - Tuesday, August 29, 2017 - link

    Oh no it is not. They are gonna milk that cow until Chinese NAND gets to the market. And then they will short the price.

    On a side note, way to go Crucial - making quality products with MLC flash, with endurance worse than that of TLC flash. It is quite the achievement.
  • ddriver - Tuesday, August 29, 2017 - link

    On the bright side, it is good to see that the competition is finally catching up to samsung SATA SSDs. Be that a couple of years after they stopped developing SATA SSDs.
  • Yojimbo - Tuesday, August 29, 2017 - link

    I think Chinese production of NAND and DRAM will be by new companies operating in new foundries. Volume production probably won't be reached until 2019, and can we really be sure of what to expect when it does?
  • leexgx - Saturday, September 2, 2017 - link

    you do know that endurance actually means warranty void if you use more than the endurance rating, MLC drives norm have endurance levels of PB of data before issues start to happen

    love the BX100 for its near 0 power use when idle but it does choke a little under high load meaning i actually notice it slightly when its struggling but still its many times faster then a HDD witch can get tied up under medium loads (like windows update and store)

    be nice if they can replicate that on the BX300 (should be better than the BX100 due to SLC cache and improved controller )
  • Ryan Smith - Tuesday, August 29, 2017 - link

    The NAND shortage is definitely not over. That won't abate until some time in 2018.

    I couldn't say if it was clearing inventory, a short-term deal, or something else, but right now there's no reason to believe any kind of price cuts will stick.
  • nathanddrews - Tuesday, August 29, 2017 - link

    So what you're saying is "get it while it's hot"?
  • Ryan Smith - Wednesday, August 30, 2017 - link

  • BrokenCrayons - Tuesday, August 29, 2017 - link

    I picked up a 480GB Muskin Reactor Armor3D for $139 _very_ recently dropped from $149. Like you, I was wondering if the NAND shortage was coming to an end, but Ryan is in a good position to know these things so maybe there's just a good deal on at the moment.
  • Alexvrb - Tuesday, August 29, 2017 - link

    MLC or not the TLC Evo is still the better performing drive. If you're buying a ~250GB model the Evo is hands down the best option. At 500GB-1TB capacities there are a couple of cheaper options that are tempting but the Evo is still the best deal for the money IMHO until you hit 2TB class drives, where the MX300 really shines.

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