Average Bench: 51.9% (695th of 929)

more Based on 2,974 user benchmarks.  Models: C400-MTFDDAK128MAM, C400-MTFDDAK128M, Micron C400 RealSSD 2.5" 7mm 128GB, MTFDDAK128MAM-1J1, C400-MTFDDAA128MAM, MTFDDAK1 MTFDDAK128MAM-1J, C400-MTFDDAC128MAM, MTFDDAK128MAM-1J

Average average bench

The Micron C400 RealSSD 128GB averaged 48.1% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Read Speed 21MB/s
Avg. 4K Random Write Speed 58.9MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Micron C400 RealSSD 128GB is 23.2%. This is a relatively narrow range which indicates that the Micron C400 RealSSD 128GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 7.74MB/s
Avg. 4K Random Mixed IO Speed 5.76MB/s

Average Bench

(Based on 2,974 samples)
Min Avg Max
371 Read 425 479
151 Write 179 191
169 Mixed 245 272
62.1% 283 MB/s
Min Avg Max
13.2 4K Read 21 27.3
27.9 4K Write 58.9 94.3
4.01 4K Mixed 5.76 10.3
70.4% 28.6 MB/s
Min Avg Max
17.7 DQ Read 96.5 259
32.6 DQ Write 99 162
4.06 DQ Mixed 7.74 13.9
30.6% 67.7 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
77GB free
Firmware: 0809 Max speed: SATA 3.0 600 MB/s
Read 432
Write 184
Mixed 257
64% 291 MB/s
4K Read 25.4
4K Write 75.2
4K Mixed 4.97
85% 35.2 MB/s
DQ Read 23.2
DQ Write 170
DQ Mixed 5.17
31% 66.3 MB/s
75GB free
Firmware: 070H Max speed: SATA 3.0 600 MB/s
Read 424
Write 186
Mixed 262
64% 291 MB/s
4K Read 19.6
4K Write 51.3
4K Mixed 5.47
64% 25.5 MB/s
DQ Read 124
DQ Write 96.5
DQ Mixed 7.53
34% 76.2 MB/s
38GB free
Firmware: 070H
Read 428
Write 194
Mixed 270
65% 297 MB/s
4K Read 15.5
4K Write 50.3
4K Mixed 4.54
56% 23.5 MB/s
DQ Read 14.8
DQ Write 44.9
DQ Mixed 4.43
11% 21.4 MB/s
9GB free
Firmware: 0809 Max speed: SATA 3.0 600 MB/s
Read 415
Write 184
Mixed 262
63% 287 MB/s
4K Read 12.7
4K Write 41.3
4K Mixed 4.55
47% 19.5 MB/s
DQ Read 17.7
DQ Write 109
DQ Mixed 4.67
21% 43.9 MB/s
2,974 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,163,897 SSDs tested.

Typical C400 RealSSD 128GB Builds (Compare 2,848 builds) See popular component choices, score breakdowns and rankings.
Gaming 19%
Desktop 54%
Workstation 39%
Jet ski

System: HP Z420 Workstation

EDIT WITH CUSTOM PC BUILDER Value: 63% - Good Total price: $345

Popular C400 RealSSD 128GB 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 (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.
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Solid State Drive Rankings (Price vs Performance) June 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.


929 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 $175Nvidia GTX 1070 $447Samsung 850 Evo 250GB $104
Intel Core i7-8700K $317Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $123
Intel Core i5-8600K $239AMD RX 480 $280Samsung 850 Pro 256GB $116
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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