Average Bench: 88.3% (287th of 1011)

Based on 1,481 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 11.7% 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-64Thread Mixed IO Speed 175MB/s
Avg. 4K Random Mixed IO Speed 37.7MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Crucial M550 128GB is 39.1%. This is a relatively wide range which indicates that the Crucial M550 128GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 256MB/s
Avg. Sequential Mixed IO Speed 291MB/s

Average Bench

(Based on 1,481 samples)
Min Avg Max
338 Read 426 471
282 Write 337 356
251 Mixed 291 323
123 SusWrite 256 351
73.3% 328 MB/s
Min Avg Max
18.8 4K Read 26.8 32
45.7 4K Write 89.7 127
24.7 4K Mixed 37.7 46.4
136% 51.4 MB/s
Min Avg Max
141 DQ Read 321 381
123 DQ Write 285 329
57.7 DQ Mixed 175 223
166% 261 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
41GB free (System drive)
Firmware: MU02
SusWrite @10s intervals: 317 311 308 310 302 293 MB/s
Read 436
Write 350
Mixed 299
SusWrite 307
78% 348 MB/s
4K Read 28.3
4K Write 93
4K Mixed 42.8
147% 54.7 MB/s
DQ Read 378
DQ Write 324
DQ Mixed 182
182% 294 MB/s
43GB free (System drive)
Firmware: MU02
SusWrite @10s intervals: 315 315 305 301 295 282 MB/s
Read 435
Write 350
Mixed 299
SusWrite 302
78% 347 MB/s
4K Read 26.6
4K Write 89.8
4K Mixed 36.8
135% 51.1 MB/s
DQ Read 354
DQ Write 319
DQ Mixed 186
181% 286 MB/s
1,481 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 18,503,312 SSDs tested.


Approx. $110 @ launch in Mar '14
AmazonUS $901 month
Send price feedback
Typical M550 128GB Builds (Compare 7,006 builds) See popular component choices, score breakdowns and rankings.
Gaming 50%
Desktop 73%
Workstation 50%

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

EDIT WITH CUSTOM PC BUILDER Value: 44% - Average Total price: $972

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.
  • - 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.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) October 2019 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.


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

Do more, faster longer...

Added 4 years ago.

1011 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 i5-9400F $145Nvidia GTX 1660 $210Samsung 850 Evo 250GB $73
Intel Core i5-9600K $240Nvidia RTX 2060 $349Samsung 850 Evo 500GB $107
Intel Core i7-9700K $350Nvidia GTX 1660-Ti $270Samsung 850 Pro 256GB $200
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
Seagate Barracuda 3TB (2016) $78G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $70SanDisk Ultra Fit 32GB $14
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback