Controller: Silicon Motion SM2246EN. Flash Memory: Micron 16nm MLC.


Controller: Marvell 88SS9189. Flash Memory: Micron 16nm MLC.

Real World Speed
Performance profile from 25,445 user samples
10,345 User Benchmarks
Best Bench: 102% 26GB free
Worst Bench: 64% 232GB free
Poor: 64% Great: 102%
SPEED RANK: 124th / 873
15,100 User Benchmarks
Best Bench: 96% 8GB free
Worst Bench: 60% 67GB free
Poor: 60% Great: 96%
SPEED RANK: 200th / 873
Effective Speed
Effective SSD Speed
86.1 % Slightly faster effective speed.
80.4 % -7%
Avg. Sequential Read Speed
502 MB/s +2% 494 MB/s -2%
Avg. Sequential Write Speed
357 MB/s Slightly faster write speed.
321 MB/s -11%
4K Read
Avg. 4K Random Read Speed
25.2 MB/s -1% 25.4 MB/s +1%
4K Write
Avg. 4K Random Write Speed
82 MB/s -1% 82.8 MB/s +1%
Avg. Sequential Mixed IO Speed
412 MB/s Slightly faster mixed IO speed.
371 MB/s -11%
4K Mixed
Avg. 4K Random Mixed IO Speed
28.4 MB/s Faster random mixed IO.
24.4 MB/s -16%
Peak Sequential Read Speed
524 MB/s +0% 523 MB/s -0%
Peak Sequential Write Speed
370 MB/s Slightly faster peak write speed.
332 MB/s -11%
4K Read
Peak 4K Random Read Speed
30.8 MB/s -1% 31 MB/s +1%
4K Write
Peak 4K Random Write Speed
112 MB/s -8% 121 MB/s Slightly faster peak random write.
Peak Sequential Mixed IO Speed
432 MB/s Slightly faster peak mixed IO speed.
396 MB/s -9%
4K Mixed
Peak 4K Random Mixed IO Speed
38.3 MB/s Slightly faster peak random mixed IO.
33.6 MB/s -14%
Market Share
Based on 4,725,021 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.37 % -41% 0.52 % Much higher market share.
Value For Money
59.5 % -18% 70.3 % Better value.
User Rating
UBM User Rating
62 % -3% 64 % +3%
Price (score)
$155 -25% $116 Cheaper.
35 Months More recent.
42 Months -17%
DQ Read
Peak 4K-64Thread Read Speed
279 MB/s Faster peak deep queue read.
215 MB/s -30%
DQ Write
Peak 4K-64Thread Write Speed
313 MB/s +3% 304 MB/s -3%
AS-SSD Total
AS-SSD Total Score
1013 Pts Slightly stronger server IO.
912 Pts -11%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
72.5 MB/s Much faster peak deep queue mixed IO.
49.5 MB/s -46%
ADQ Read
Avg. 4K-64Thread Read Speed
166 MB/s Much faster deep queue read.
119 MB/s -39%
ADQ Write
Avg. 4K-64Thread Write Speed
214 MB/s Slightly faster deep queue write.
198 MB/s -8%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
49.8 MB/s Much faster deep queue mixed IO.
35.1 MB/s -42%
250GB 256GB

The 250GB Crucial BX100 SSD is the value orientated variant of Crucial's M range of SSDs. The BX100 uses the same NAND as its premium MX200 sibling but the BX100 uses a Silicon Motion controller as opposed to the Marvel controller found in the MX range. Feature wise the BX100 is missing SLC caching and there is no hardware encryption (so security frameworks such as windows Bitlocker will operate less efficiently). In terms of I/O performance the BX100 looks promising. Comparing the BX100 and MX100 shows that the newer BX100 may be faster than its predecessor but as yet there are insufficient user benchmarks to draw any definitive conclusions. The BX100 has only just started hitting the shelves so there's plenty of room for price reductions from its already reasonable price tag. I will revisit this review when I have more performance data for the BX100. [Jan '15 SSDrivePro]


The Crucial MX100 is the first 16nm SSD to date. Aside from NAND, the MX100 shares the same hardware as its more expensive sibling, the M550. Comparing the MX100 and M550 shows that the two drives have similar read speeds but that the MX100 lags by nearly 50% at writing. The newer 16nm NAND reduces costs and accordingly the MX100 is the cheapest SSD (per GB) to date. In terms of performance the MX100 is a compromise which may or may not be worth making depending on individual circumstances. For typical desktop use including email, office documents and web browsing the MX100 is a great choice but power users should look elsewhere. Comparing the 250GB 840 EVO and 256GB MX100 shows that for a marginal premium, the Evo offers better write speeds. (Note: at 500GB they are more evenly matched) [Jun '14 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) December 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

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Intel Core i7-7700K $313Nvidia GTX 1070 $410Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $285AMD RX 480 $265Samsung 850 Evo 500GB $140
Intel Core i5-7600K $215Nvidia GTX 1060-6GB $260Samsung 850 Pro 256GB $114
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $200SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $215SanDisk Ultra Fit 32GB $10
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