The Crucial BX300 (480GB) SSD Review: Back To MLC
by Billy Tallis on August 29, 2017 9:00 AM ESTMixed Random Performance
Our test of mixed random reads and writes covers mixes varying from pure reads to pure writes at 10% increments. Each mix is tested for up to 1 minute or 32GB of data transferred. The test is conducted with a queue depth of 4, and is limited to a 64GB span of the drive. In between each mix, the drive is given idle time of up to one minute so that the overall duty cycle is 50%.
The mixed random I/O performance if the Crucial BX300 puts it in the second tier of SATA SSDs, with Samsung's 850s forming the top tier. The Crucial MX300 is a bit slower than the BX300.
With the exception of the Crucial MX200, all of the drives that outperformed the BX300 are also more efficient. The MX300 is also significantly more efficient despite being slightly slower.
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The Crucial BX300's performance on the mixed random I/O test increases slowly as the proportion of writes grows, and it accelerates near the end of the test. The power consumption is flat across almost all of the test, but ticks up as the workload shifts to pure writes.
Samsung's drives are faster than the BX300 across the entire test, while the Intel 545s and Crucial MX200 managed higher average performance scores by performing better on the read-heavy portions of the test and a bit worse during the write-heavy phases.
Mixed Sequential Performance
Our test of mixed sequential reads and writes differs from the mixed random I/O test by performing 128kB sequential accesses rather than 4kB accesses at random locations, and the sequential test is conducted at queue depth 1. The range of mixes tested is the same, and the timing and limits on data transfers are also the same as above.
The Crucial BX300 performs very well on the mixed sequential I/O test, slightly ahead of the Samsung 850 EVO and only 5% slower than the 850 PRO. The MX300 scores closer to the middle of the pack, while the BX200 and MX200 are near the bottom.
The Crucial BX300's power efficiency score isn't quite as close to the top score, but only because Toshiba's OCZ VX500 really stands out from the crowd. The BX300 is ahead of the Samsung 850 PRO and close to the 850 EVO, MX300, and Intel 545s.
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The BX300's performance doesn't change much over the course of the mixed sequental test, but it does speed up a bit near the end. Power consumption starts out high but drops dramatically across the first half of the test, and then follows the shape of the performance curve.
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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 happenlove 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
Yup.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.