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


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

Real World Speed
Performance profile from 21,322 user samples
8,899 User Benchmarks
Best Bench: 102% 42GB free
Worst Bench: 64% 207GB free
Poor: 64% Great: 102%
SPEED RANK: 123rd / 860
12,423 User Benchmarks
Best Bench: 96% 134GB free
Worst Bench: 58% 34GB free
Poor: 58% Great: 96%
SPEED RANK: 188th / 860
Effective Speed
Effective SSD Speed
85.3 % Slightly faster effective speed.
80.9 % -5%
Avg. Sequential Read Speed
503 MB/s +2% 491 MB/s -2%
Avg. Sequential Write Speed
354 MB/s Slightly faster write speed.
319 MB/s -11%
4K Read
Avg. 4K Random Read Speed
25.3 MB/s -2% 25.7 MB/s +2%
4K Write
Avg. 4K Random Write Speed
80.3 MB/s -3% 83 MB/s +3%
Avg. Sequential Mixed IO Speed
411 MB/s Slightly faster mixed IO speed.
364 MB/s -13%
4K Mixed
Avg. 4K Random Mixed IO Speed
27.9 MB/s Slightly faster random mixed IO.
25.1 MB/s -11%
Peak Sequential Read Speed
525 MB/s +1% 522 MB/s -1%
Peak Sequential Write Speed
370 MB/s Slightly faster peak write speed.
332 MB/s -11%
4K Read
Peak 4K Random Read Speed
30.9 MB/s -1% 31.3 MB/s +1%
4K Write
Peak 4K Random Write Speed
115 MB/s -7% 123 MB/s Slightly faster peak random write.
Peak Sequential Mixed IO Speed
430 MB/s Slightly faster peak mixed IO speed.
397 MB/s -8%
4K Mixed
Peak 4K Random Mixed IO Speed
38.3 MB/s Slightly faster peak random mixed IO.
33.7 MB/s -14%
Market Share
Based on 4,111,554 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.34 % Higher market share.
0.29 % -17%
Value For Money
59 % -20% 70.8 % Better value.
User Rating
UBM User Rating
62 % -3% 64 % +3%
Price (score)
$155 -25% $116 Cheaper.
33 Months More recent.
40 Months -18%
DQ Read
Peak 4K-64Thread Read Speed
278 MB/s Slightly faster peak deep queue read.
244 MB/s -14%
DQ Write
Peak 4K-64Thread Write Speed
313 MB/s +3% 303 MB/s -3%
AS-SSD Total
AS-SSD Total Score
1,015 Pts Slightly stronger server IO.
957 Pts -6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
72.3 MB/s Much faster peak deep queue mixed IO.
51.5 MB/s -40%
ADQ Read
Avg. 4K-64Thread Read Speed
161 MB/s Faster deep queue read.
125 MB/s -29%
ADQ Write
Avg. 4K-64Thread Write Speed
208 MB/s +2% 204 MB/s -2%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
47.3 MB/s Much faster deep queue mixed IO.
36.1 MB/s -31%
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) October 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

 Best User Rated

The Best.
Intel Core i7-7700K $300Nvidia GTX 1070 $380Samsung 850 Evo 250GB $98
AMD Ryzen 7 1700 $280AMD RX 480 $491Samsung 850 Pro 256GB $120
Intel Core i5-7600K $220Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $159
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $163SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $842SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $180SanDisk Ultra Fit 32GB $13
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback