Average Bench: 84.1% (194th of 927)

Based on 1,086 user benchmarks.  Models: Crucial_CT128M550SSD1, Micron_M550_2.5"_7mm_128GB, Crucial_ CT128M550SSD1, Crucial_CT128M55

Very good average bench

The Crucial M550 128GB averaged just 15.9% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Crucial M550 128GB near the top of the comparison list.


Avg. 4K Random Write Speed 86.8MB/s
Avg. 4K Random Read Speed 25.9MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial M550 128GB is 39.4%. This is a relatively wide range which indicates that the Crucial M550 128GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 41MB/s
Avg. 4K-64Thread Read Speed 174MB/s

Average Bench

(Based on 1,086 samples)
Min Avg Max
324 Read 496 525
320 Write 341 353
251 Mixed 391 417
90.8% 409 MB/s
Min Avg Max
18.8 4K Read 25.9 31.8
41.1 4K Write 86.8 121
14.5 4K Mixed 25.1 36.2
117% 45.9 MB/s
Min Avg Max
22.1 DQ Read 174 363
64.4 DQ Write 201 317
13.8 DQ Mixed 41 64.1
71.4% 138 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
70GB free
Firmware: MU02 Max speed: SATA 3.0 600 MB/s
Read 511
Write 341
Mixed 410
93% 421 MB/s
4K Read 23.4
4K Write 91.3
4K Mixed 35
129% 49.9 MB/s
DQ Read 269
DQ Write 238
DQ Mixed 71.2
103% 193 MB/s
41GB free
Firmware: MU01 Max speed: SATA 3.0 600 MB/s
Read 498
Write 340
Mixed 407
92% 415 MB/s
4K Read 23.9
4K Write 97.2
4K Mixed 17.8
110% 46.3 MB/s
DQ Read 26.2
DQ Write 274
DQ Mixed 11.8
50% 104 MB/s
10GB free
Firmware: MU01 Max speed: SATA 3.0 600 MB/s
Read 493
Write 339
Mixed 407
92% 413 MB/s
4K Read 22.1
4K Write 68
4K Mixed 17.3
92% 35.8 MB/s
DQ Read 24.8
DQ Write 143
DQ Mixed 17.2
33% 61.7 MB/s
16GB free
Firmware: MU01 Max speed: SATA 3.0 600 MB/s
Read 304
Write 343
Mixed 179
61% 275 MB/s
4K Read 24.5
4K Write 53.9
4K Mixed 18.6
90% 32.4 MB/s
DQ Read 29.3
DQ Write 105
DQ Mixed 19.9
29% 51.5 MB/s
1,086 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,774,951 SSDs tested.


Approx. $110 @ launch in Mar '14
AmazonUS $1471 month
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Typical M550 128GB Builds (Compare 3,840 builds) See popular component choices, score breakdowns and rankings.
Gaming 63%
Desktop 78%
Workstation 57%

Motherboard: MSI Z97 GAMING 3 (MS-7918) - $135

EDIT WITH CUSTOM PC BUILDER Value: 66% - Good Total price: $1,004

Popular M550 128GB compatible motherboards:

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 userbenchmark.com.
  • - 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.
Solid State Drive Rankings (Price vs Performance) May 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.


Controller: Marvell 88SS9189. Flash Memory: Micron Synchronous 20nm MLC.

Do more, faster longer...

Added 2 years ago.

927 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.
AMD Ryzen 5 1600 $169Nvidia GTX 1070 $447Samsung 850 Evo 250GB $100
Intel Core i7-8700K $325Nvidia GTX 1060-6GB $295Samsung 850 Evo 500GB $137
Intel Core i7-7700K $290AMD RX 480 $330Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $960SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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