Crucial has been doing very well in the client SSD market during the past year. Crucial's/Micron's ability to quickly roll out the 16nm NAND node definitely paid off because the MX100 really nailed it when it came to cost and overall value. The MX100 set a new bar for mainstream SSD prices while still providing solid performance in typical client-level workloads. It gained a strong recommendation from us and has remained at the top of my "what to buy list" for nearly a year now, and honestly it has been one of the most popular mainstream SSD during its lifespan.

Back at CES Crucial introduced some fresh faces to its client SSD lineup by announcing the MX200 and BX100, which are replacing the MX100 and the aging M550. The MX200 is essentially a retail version of Micron's M600 that was launched last year and which we already reviewed, but the BX100 is a totally new product from several angles. First off, the 'BX' series is new to Crucial's lineup and denotes a budget-oriented drive, whereas the 'MX' brand is kept for higher performance drives. It has become a common strategy in the SSD industry to offer a mainstream drive that focuses solely on cost along with a higher performance model with better feature set for the enthusiasts and professionals. Crucial already kind of had that strategy with the M500 (later MX100) and M550, but the two lacked any real differentiation in both performance and feature set, so the BX100 and MX200 are here to fix that.

The BX100 isn't Crucial's first try with a low-cost drive as some of you may recall the infamous Crucial v4, which was frankly one of the worst SSDs I've ever reviewed. It looks like Crucial learned its lesson because we never saw a successor to the v4. Fortunately the BX100 has a lot more potential as is powered by Silicon Motion's SM2246EN controller. Crucial/Micron worked closely with Silicon Motion to develop the firmware for the BX100, so the firmware is unique to Crucial and we won't be seeing it in any other SM2246EN based drive. I've covered the technical details of the SM2246EN controller in our ADATA Premier SP610 review and our tests have shown that it's an excellent controller for mainstream client SSDs, so on paper at least the BX100 shouldn't end up the same way as the v4 did. Generally speaking Silicon Motion has been gaining a lot of market share lately and the new partnerships with Crucial/Micron and SanDisk has made the company become a tier-one controller manufacturer.

Crucial BX100 Specifications
Capacity 120GB 250GB 500GB 1TB
Controller Silicon Motion SM2246EN
NAND Micron 16nm 128Gbit MLC
DRAM (DDR3-1600) 256MB 512MB 1GB
Sequential Read 535MB/s 535MB/s 535MB/s 535MB/s
Sequential Write 185MB/s 370MB/s 450MB/s 450MB/s
4KB Random Read  87K IOPS 87K IOPS 90K IOPS 90K IOPS
4KB Random Write  43K IOPS 70K IOPS 70K IOPS 70K IOPS
DevSleep Power Consumption 15mW
Slumber Power Consumption 115mW
Max Power Consumption  4W
Encryption N/A
Endurance 72TB
Warranty Three years

Since Crucial's motivation behind the BX100 is to differentiate the product lineup, the BX100 doesn't have the hardware encryption support that we got used to with the previous drives. While the SM2246EN is capable of supporting Opal encryption, it makes sense for Crucial not to include it in the BX100 because there's always additional validation costs that go along a feature. Besides, the MX200 has full encryption support and obviously Crucial wants to guide the buyers who need the feature towards the more expensive (and likely higher profit) MX200. 

The BX100 does however have the same partial power loss protection that protects against lower page corruption during sudden power losses (I suggest you read the M600 review for the full details of Crucial's power loss implementation). The implementation itself is a bit different from the Marvell based drives (I don't have the details, but I suspect it has to do with the SM2246EN controller), but the design provides the same >200µs of holdup to ensure that ongoing upper page programs won't corrupt the data in the lower page.

The BX100 is using the same Micron 16nm 128Gbit MLC NAND as the MX100 and MX200. I covered Micron's 16nm NAND in more detail in the MX100 review, but in short it is a die shrink of the 20nm node and utilizes the same high-K dielectric cell structure which is likely the reason why Micron was able to roll out the 16nm so quickly with good yields (whereas Toshiba/SanDisk seem to be having issues with their 15nm node since it has yet to find its way into a shipping product). 

  120GB 250GB 500GB 1TB
Raw NAND Capacity 128GiB 256GiB 512GiB 1024GiB
# of NAND Packages 4 4 8 16
# of Die per Package 2 4 4 4
Over-Provisioning 12.7% 9.1% 9.1% 9.1%

With the BX100, Crucial is moving to user capacities that are similar to Samsung's EVO SSD series. That gives the BX100 a little more over-provisioning over the traditional 2^n capacities and I also suspect that even hundreds like 500GB are easier to market than 480GB or 512GB given that consumers are accustomed to hard drive capacities. 

AnandTech 2015 SSD Test System
CPU Intel Core i7-4770K running at 3.5GHz (Turbo & EIST enabled, C-states disabled)
Motherboard ASUS Z97 Deluxe (BIOS 2205)
Chipset Intel Z97
Chipset Drivers Intel 10.0.24+ Intel RST 13.2.4.1000
Memory Corsair Vengeance DDR3-1866 2x8GB (9-10-9-27 2T)
Graphics Intel HD Graphics 4600
Graphics Drivers 15.33.8.64.3345
Desktop Resolution 1920 x 1080
OS Windows 8.1 x64
A Look at Storage Executive - Crucial's SSD Toolbox
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  • SeanJ76 - Monday, April 27, 2015 - link

    -and Crucial has the worst reliability record when it comes to SSD's, right next to OCZ, two of the worst SSD makers today.........that's why their so dirt cheap! Reply
  • MarkHunt - Sunday, May 03, 2015 - link

    BX100 250GB running excellent on an old SATA 2 motherboard based C2D Hackintosh, the boot speed is incredible and applications such as Logic open with little lag, which used to happen with previous HDD. TRIM is also simple to enable with Clover bootloader. Reply
  • rogerdpack - Thursday, May 14, 2015 - link

    unfortunately it appears the 120GB version has dramatically worse write performance, just a heads up, than its counterparts: http://ssd.userbenchmark.com/Compare/Crucial-BX100... Reply
  • kadajawi - Thursday, May 21, 2015 - link

    Wait a minute. According to pretty much every other reviewer, news site etc. the power loss capacitors are missing from the BX100, yet Anandtech says they are there. What is it now? To me that's a pretty big deal, as I don't run my laptop with a battery and the power plug may occasionally slide out... Reply
  • LeonS - Monday, October 19, 2015 - link

    Has anyone found a definitive answer for this yet? I have searched high and low, but cannot find an answer! Reply
  • sligett - Tuesday, June 16, 2015 - link

    Are the idle power consumption labels switched for the BX100 250GB and 120GB? Reply
  • marvalsys - Monday, October 12, 2015 - link

    Just spent way too much time trying to clone a 500GB WD hard disk with Windows 10 to a BX100 to use in a new Lenovo Flex 3 15". Clone went fine (booting from a True Image 2015 CD) but with cloned SSD installed laptop wouldn't boot / wouldn't even POST or allow booting from any other drive. Same exact clone to a Samsung 850 EVO worked flawlessly. Call to Crucial tech support resulted in rep saying that they have no current SSDs compatible with Flex 3 15 (even though their website lists 7, including the BX100). Seems to be some confusion - buyers beware! Reply

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