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

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

Real World Speed
Performance profile from 53,580 user samples
5,205 User Benchmarks
Best Bench: 101% 87GB free
Worst Bench: 58% 97GB free
Poor: 58% Great: 101%
SPEED RANK: 152nd / 860
48,375 User Benchmarks
Best Bench: 97% 3GB free
Worst Bench: 55% 122GB free
Poor: 55% Great: 97%
SPEED RANK: 200th / 860
Effective Speed
Effective SSD Speed
83 % +4% 79.8 % -4%
Avg. Sequential Read Speed
502 MB/s +4% 484 MB/s -4%
Avg. Sequential Write Speed
365 MB/s Faster write speed.
315 MB/s -16%
4K Read
Avg. 4K Random Read Speed
26.9 MB/s -36% 36.6 MB/s Much faster random read.
4K Write
Avg. 4K Random Write Speed
71.4 MB/s Faster random write.
59.4 MB/s -20%
Avg. Sequential Mixed IO Speed
372 MB/s Slightly faster mixed IO speed.
324 MB/s -15%
4K Mixed
Avg. 4K Random Mixed IO Speed
23.8 MB/s Slightly faster random mixed IO.
20.8 MB/s -14%
Peak Sequential Read Speed
527 MB/s +3% 510 MB/s -3%
Peak Sequential Write Speed
399 MB/s Slightly faster peak write speed.
353 MB/s -13%
4K Read
Peak 4K Random Read Speed
32.9 MB/s -39% 45.7 MB/s Much faster peak random read.
4K Write
Peak 4K Random Write Speed
102 MB/s Faster peak random write.
84.1 MB/s -21%
Peak Sequential Mixed IO Speed
415 MB/s Faster peak mixed IO speed.
358 MB/s -16%
4K Mixed
Peak 4K Random Mixed IO Speed
34.1 MB/s Faster peak random mixed IO.
27.5 MB/s -24%
Market Share
Based on 4,120,634 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.24 % -742% 2.02 % Hugely higher market share.
Value For Money
45 % -26% 56.5 % Better value.
User Rating
UBM User Rating
68 % +3% 66 % -3%
Price (score)
$214 -30% $150 Much cheaper.
33 Months Much more recent.
51 Months -35%
DQ Read
Peak 4K-64Thread Read Speed
356 MB/s -4% 369 MB/s +4%
DQ Write
Peak 4K-64Thread Write Speed
279 MB/s Faster peak deep queue write.
241 MB/s -16%
AS-SSD Total
AS-SSD Total Score
1,093 Pts +2% 1,074 Pts -2%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
66.7 MB/s -27% 84.7 MB/s Faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
180 MB/s -11% 199 MB/s Slightly faster deep queue read.
ADQ Write
Avg. 4K-64Thread Write Speed
179 MB/s Faster deep queue write.
153 MB/s -17%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
41.8 MB/s -15% 48.2 MB/s Faster deep queue mixed IO.
250GB 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]


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) 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

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The Best.
Intel Core i7-7700K $300Nvidia GTX 1070 $394Samsung 850 Evo 250GB $98
AMD Ryzen 7 1700 $280AMD RX 480 $491Samsung 850 Pro 256GB $126
Intel Core i5-7600K $230Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $150
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
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