Average Bench: 87% (355th of 1058)

Based on 616 user benchmarks.  Model: Crucial_CT256M550SSD3

Very good average bench

The Crucial M550 mSATA 256GB averaged just 12.9% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Crucial M550 mSATA 256GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 176MB/s
Avg. 4K-64Thread Write Speed 279MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Crucial M550 mSATA 256GB is 43.3%. This is a relatively wide range which indicates that the Crucial M550 mSATA 256GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 312MB/s
Avg. Sequential Mixed IO Speed 331MB/s

Average Bench

(Based on 616 samples)
Min Avg Max
349 Read 434 516
334 Write 420 472
256 Mixed 331 484
147 SusWrite 312 430
84.1% 374 MB/s
Min Avg Max
17.2 4K Read 24.9 30.6
37.7 4K Write 74.2 113
15.7 4K Mixed 32.4 44.4
118% 43.8 MB/s
Min Avg Max
25 DQ Read 284 384
64.2 DQ Write 279 346
15.9 DQ Mixed 176 237
161% 246 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
78GB free (System drive)
Firmware: MU01
SusWrite @10s intervals: 365 237 253 225 211 230 MB/s
Read 450
Write 440
Mixed 298
SusWrite 254
81% 361 MB/s
4K Read 28.2
4K Write 94.3
4K Mixed 40.8
145% 54.4 MB/s
DQ Read 311
DQ Write 341
DQ Mixed 232
201% 295 MB/s
76GB free (System drive)
Firmware: MU01
SusWrite @10s intervals: 328 253 206 210 210 200 MB/s
Read 382
Write 408
Mixed 277
SusWrite 234
73% 325 MB/s
4K Read 24.9
4K Write 88.1
4K Mixed 35
129% 49.3 MB/s
DQ Read 335
DQ Write 336
DQ Mixed 232
203% 301 MB/s
616 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 41,898,770 SSDs tested.


AmazonUS $3782 years
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Typical M550 mSATA 256GB Builds (Compare 33,391 builds) See popular component choices, score breakdowns and rankings.
Gaming 2%
Tree trunk
Desktop 65%
Battle cruiser
Workstation 2%
Tree trunk

Disqualified System: bin bin

EDIT WITH CUSTOM PC BUILDER Value: 34% - Below average Total price: $675

Popular M550 mSATA 256GB systems:

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.

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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
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  • - Explore your best upgrade options with a virtual PC build.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) April 2021 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 - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


1058 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i5-11400F $180Nvidia RTX 3070 $500Crucial MX500 250GB $50
Intel Core i5-11600K $265Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i5-10600K $215Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $50
Seagate Barracuda 1TB (2016) $38Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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