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


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

Real World Speed
Performance profile from 19,030 user samples
11,928 User Benchmarks
Best Bench: 100% 95GB free
Worst Bench: 65% 142GB free
Poor: 65% Great: 100%
SPEED RANK: 156th / 908
7,102 User Benchmarks
Best Bench: 100% 126GB free
Worst Bench: 59% 95GB free
Poor: 59% Great: 100%
SPEED RANK: 181st / 908
Effective Speed
Effective SSD Speed
84.7 % +2% 82.9 %
Avg. Sequential Read Speed
502 MB/s +0% 500 MB/s
Avg. Sequential Write Speed
356 MB/s 367 MB/s +3%
4K Read
Avg. 4K Random Read Speed
25 MB/s 26.9 MB/s Slightly faster random read.
4K Write
Avg. 4K Random Write Speed
78.5 MB/s Slightly faster random write.
70.3 MB/s
Avg. Sequential Mixed IO Speed
413 MB/s Slightly faster mixed IO speed.
374 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
27.6 MB/s Slightly faster random mixed IO.
24.2 MB/s
Peak Sequential Read Speed
524 MB/s 527 MB/s +1%
Peak Sequential Write Speed
370 MB/s 399 MB/s Slightly faster peak write speed.
4K Read
Peak 4K Random Read Speed
30.4 MB/s 32.6 MB/s Slightly faster peak random read.
4K Write
Peak 4K Random Write Speed
108 MB/s Slightly faster peak random write.
99.6 MB/s
Peak Sequential Mixed IO Speed
431 MB/s +4% 416 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
37.8 MB/s Slightly faster peak random mixed IO.
33.9 MB/s
Market Share
Based on 6,034,146 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.18 % Higher market share.
0.15 %
Value For Money
75.3 % Better value.
63.9 %
User Rating
UBM User Rating
62 % 68 % Slightly more popular.
Price (score)
$111 Cheaper.
38 Months 38 Months
DQ Read
Peak 4K-64Thread Read Speed
277 MB/s 348 MB/s Faster peak deep queue read.
DQ Write
Peak 4K-64Thread Write Speed
311 MB/s Slightly faster peak deep queue write.
276 MB/s
AS-SSD Total
AS-SSD Total Score
1,003 Pts 1,075 Pts Slightly stronger server IO.
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
72.3 MB/s Slightly faster peak deep queue mixed IO.
66.8 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
158 MB/s 176 MB/s Slightly faster deep queue read.
ADQ Write
Avg. 4K-64Thread Write Speed
203 MB/s Faster deep queue write.
172 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
47.8 MB/s Slightly faster deep queue mixed IO.
43.4 MB/s
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 250GB Crucial MX200 is successor to the hugely successful MX100. Both drives use the same NAND and controller but the new MX200 features Dynamic Write Acceleration (DWA) which is a new dynamically sized SLC cache. Samsung were the first to introduce SLC caching on the 840 Evo nearly two years ago so Crucial are somewhat late to the party. SLC caches generally only help performance in corner case real word scenarios and benchmarks. I prefer drives without SLC caches because they offer more consistent and sustainable real world IO. Comparing the MX100 and MX200 shows that the newer MX200 has a significantly faster peak write speed which is of course explained by the new DWA cache. Price is the deciding factor between the MX100 and MX200 so although the MX200 isn't priced aggressively yet, it will almost certainly move up the value rankings when retailers build stocks and subsequently cut prices. [Feb '15 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) March 2018 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]


Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
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 i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $141
Intel Core i5-8600K $235AMD RX 480 $400Samsung 850 Pro 256GB $160
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $170SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $205SanDisk Extreme 16GB $18
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