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

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC.

Real World Speed
Performance profile from 8,906 user samples
4,109 User Benchmarks
Best Bench: 101% 63GB free
Worst Bench: 61% 184GB free
Poor: 61% Great: 101%
SPEED RANK: 161st / 850
4,797 User Benchmarks
Best Bench: 82% 256GB free
Worst Bench: 51% 153GB free
Poor: 51% Great: 82%
SPEED RANK: 350th / 850
Effective Speed
Effective SSD Speed
82 % Faster effective speed.
68.5 % -20%
Avg. Sequential Read Speed
504 MB/s Slightly faster read speed.
462 MB/s -9%
Avg. Sequential Write Speed
365 MB/s Faster write speed.
300 MB/s -22%
4K Read
Avg. 4K Random Read Speed
26.6 MB/s Faster random read.
23 MB/s -16%
4K Write
Avg. 4K Random Write Speed
69.4 MB/s Faster random write.
58.6 MB/s -18%
Avg. Sequential Mixed IO Speed
375 MB/s Faster mixed IO speed.
308 MB/s -22%
4K Mixed
Avg. 4K Random Mixed IO Speed
23.3 MB/s Much faster random mixed IO.
16.9 MB/s -38%
Peak Sequential Read Speed
528 MB/s Slightly faster peak read speed.
485 MB/s -9%
Peak Sequential Write Speed
399 MB/s Faster peak write speed.
338 MB/s -18%
4K Read
Peak 4K Random Read Speed
33.2 MB/s Faster peak random read.
27.8 MB/s -19%
4K Write
Peak 4K Random Write Speed
102 MB/s Faster peak random write.
84 MB/s -21%
Peak Sequential Mixed IO Speed
416 MB/s Faster peak mixed IO speed.
339 MB/s -23%
4K Mixed
Peak 4K Random Mixed IO Speed
34.3 MB/s Much faster peak random mixed IO.
24.4 MB/s -41%
Market Share
Based on 2,813,985 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.31 % -145% 0.76 % Hugely higher market share.
Value For Money
56.4 % -27% 71.4 % Better value.
User Rating
UBM User Rating
67 % +2% 66 % -2%
Price (score)
$156 -37% $98 Much cheaper.
28 Months -61% 11 Months Much more recent.
DQ Read
Peak 4K-64Thread Read Speed
360 MB/s Much faster peak deep queue read.
230 MB/s -57%
DQ Write
Peak 4K-64Thread Write Speed
279 MB/s Faster peak deep queue write.
222 MB/s -26%
AS-SSD Total
AS-SSD Total Score
1,100 Pts Much stronger server IO.
806 Pts -37%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
66.5 MB/s Much faster peak deep queue mixed IO.
40.2 MB/s -65%
ADQ Read
Avg. 4K-64Thread Read Speed
169 MB/s Much faster deep queue read.
124 MB/s -36%
ADQ Write
Avg. 4K-64Thread Write Speed
168 MB/s Faster deep queue write.
136 MB/s -24%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
39.9 MB/s Much faster deep queue mixed IO.
25.1 MB/s -59%
250GB 275GB

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 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) May 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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Intel Core i7-7700K $309Nvidia GTX 1070 $368Samsung 850 Evo 250GB $98
AMD Ryzen 7 1700 $300AMD RX 480 $210Samsung 850 Pro 256GB $138
Intel Core i5-7600K $240Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $167
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $13
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