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

Real World Speed
Performance profile from 29,296 user samples
22,305 User Benchmarks
Best Bench: 269% 620GB free
Worst Bench: 149% 23GB free
Poor: 149% Great: 269%
SPEED RANK: 11th / 873
6,991 User Benchmarks
Best Bench: 102% 161GB free
Worst Bench: 62% 203GB free
Poor: 62% Great: 102%
SPEED RANK: 159th / 873
Effective Speed
Effective SSD Speed
218 % Hugely faster effective speed.
83 % -162%
Avg. Sequential Read Speed
1913 MB/s Hugely faster read speed.
504 MB/s -280%
Avg. Sequential Write Speed
1153 MB/s Hugely faster write speed.
369 MB/s -212%
4K Read
Avg. 4K Random Read Speed
44.1 MB/s Much faster random read.
26.7 MB/s -65%
4K Write
Avg. 4K Random Write Speed
130 MB/s Hugely faster random write.
70 MB/s -86%
Avg. Sequential Mixed IO Speed
1307 MB/s Hugely faster mixed IO speed.
375 MB/s -249%
4K Mixed
Avg. 4K Random Mixed IO Speed
43 MB/s Much faster random mixed IO.
23.9 MB/s -80%
Peak Sequential Read Speed
2339 MB/s Hugely faster peak read speed.
528 MB/s -343%
Peak Sequential Write Speed
1458 MB/s Hugely faster peak write speed.
399 MB/s -265%
4K Read
Peak 4K Random Read Speed
52 MB/s Much faster peak random read.
33.2 MB/s -57%
4K Write
Peak 4K Random Write Speed
185 MB/s Hugely faster peak random write.
100 MB/s -85%
Peak Sequential Mixed IO Speed
1586 MB/s Hugely faster peak mixed IO speed.
416 MB/s -281%
4K Mixed
Peak 4K Random Mixed IO Speed
60.3 MB/s Much faster peak random mixed IO.
34.5 MB/s -75%
Market Share
Based on 5,194,731 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.42 % Hugely higher market share.
0.2 % -110%
Value For Money
95 % Much better value.
64 % -48%
User Rating
UBM User Rating
51 % -33% 68 % Much more popular.
Price (score)
$586 -77% $134 Much cheaper.
DQ Read
Peak 4K-64Thread Read Speed
662 MB/s Hugely faster peak deep queue read.
356 MB/s -86%
DQ Write
Peak 4K-64Thread Write Speed
398 MB/s Much faster peak deep queue write.
279 MB/s -43%
AS-SSD Total
AS-SSD Total Score
2,133 Pts Hugely stronger server IO.
1,092 Pts -95%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
231 MB/s Hugely faster peak deep queue mixed IO.
66.8 MB/s -246%
ADQ Read
Avg. 4K-64Thread Read Speed
325 MB/s Much faster deep queue read.
182 MB/s -79%
ADQ Write
Avg. 4K-64Thread Write Speed
281 MB/s Much faster deep queue write.
173 MB/s -62%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
129 MB/s Hugely faster deep queue mixed IO.
41.2 MB/s -213%
512GB 250GB

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) January 2018 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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The Best.
Intel Core i7-7700K $280Nvidia GTX 1070 $430Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $290Nvidia GTX 1060-6GB $275Samsung 850 Evo 500GB $140
Intel Core i5-7600K $210AMD RX 480 $400Samsung 850 Pro 256GB $110
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $65
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $51Corsair Vengeance LPX DDR4 3200 C16 2x8GB $220SanDisk Ultra Fit 32GB $12
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