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

Controller: Samsung 3 Core MEX. Memory: Samsung 19nm Toggle Mode TLC.

Real World Speed
Performance profile from 51,582 user samples
7,497 User Benchmarks
Best Bench: 102% 233GB free
Worst Bench: 66% 126GB free
Poor: 66% Great: 102%
SPEED RANK: 115th / 857
44,085 User Benchmarks
Best Bench: 97% 45GB free
Worst Bench: 57% 23GB free
Poor: 57% Great: 97%
SPEED RANK: 198th / 857
Effective Speed
Effective SSD Speed
86.3 % Slightly faster effective speed.
79.9 % -8%
Avg. Sequential Read Speed
502 MB/s +3% 486 MB/s -3%
Avg. Sequential Write Speed
356 MB/s Slightly faster write speed.
317 MB/s -12%
4K Read
Avg. 4K Random Read Speed
25.5 MB/s -44% 36.8 MB/s Much faster random read.
4K Write
Avg. 4K Random Write Speed
81.9 MB/s Much faster random write.
59.1 MB/s -39%
Avg. Sequential Mixed IO Speed
412 MB/s Faster mixed IO speed.
325 MB/s -27%
4K Mixed
Avg. 4K Random Mixed IO Speed
28.5 MB/s Much faster random mixed IO.
20.9 MB/s -36%
Peak Sequential Read Speed
525 MB/s +3% 510 MB/s -3%
Peak Sequential Write Speed
371 MB/s Slightly faster peak write speed.
352 MB/s -5%
4K Read
Peak 4K Random Read Speed
30.8 MB/s -49% 45.9 MB/s Much faster peak random read.
4K Write
Peak 4K Random Write Speed
115 MB/s Much faster peak random write.
85.7 MB/s -34%
Peak Sequential Mixed IO Speed
432 MB/s Faster peak mixed IO speed.
357 MB/s -21%
4K Mixed
Peak 4K Random Mixed IO Speed
38.2 MB/s Much faster peak random mixed IO.
27.5 MB/s -39%
Market Share
Based on 3,541,596 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.41 % -480% 2.38 % Hugely higher market share.
Value For Money
70.5 % Slightly better value.
63 % -12%
User Rating
UBM User Rating
62 % -3% 64 % +3%
Price (score)
$124 +5% $130 -5%
31 Months Much more recent.
49 Months -37%
DQ Read
Peak 4K-64Thread Read Speed
278 MB/s -33% 369 MB/s Much faster peak deep queue read.
DQ Write
Peak 4K-64Thread Write Speed
313 MB/s Much faster peak deep queue write.
240 MB/s -30%
AS-SSD Total
AS-SSD Total Score
1,015 Pts -6% 1,075 Pts Slightly stronger server IO.
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
72.5 MB/s -16% 84.2 MB/s Faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
169 MB/s -14% 192 MB/s Slightly faster deep queue read.
ADQ Write
Avg. 4K-64Thread Write Speed
214 MB/s Much faster deep queue write.
154 MB/s -39%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
50.6 MB/s +1% 50 MB/s -1%
250GB 250GB

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 Evo is remarkable in that, like the Sandisk Extreme II, it features a second level cache. For the 250 GB Evo this consists of a 3 GB Turbowrite cache (TWC) which is a block of high speed Flash Memory. When the TWC is exhausted write speeds drop by approximately 50% but that won't often happen under typical consumer workloads. In terms of raw performance, even with its cache, the Evo still isn't the fastest drive. With a real world speed index reading of 439 MB/s the EVO is however, within reach of the two speed leaders (Vector and 850 Pro). At a price point of $130 the Evo is around 30% cheaper making it the best value for money SSDs I have seen in 2014. Comparing the Evo and the Sandisk Ultra Plus shows that the Evo is the winner but the Sandisk may be a viable alternative thanks to its cache-free, and therefore more consistent performance during extended writes. [Aug '14 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) August 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 $367Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $280AMD RX 480 $390Samsung 850 Pro 256GB $120
Intel Core i5-7600K $212Nvidia GTX 1060-6GB $280Samsung 850 Evo 500GB $165
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $718SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $57HyperX Fury DDR4 2133 C14 2x8GB $140SanDisk Ultra Fit 32GB $13
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback