Average Bench: 64.4% (450th of 885)

Based on 219 user benchmarks.  Model: SanDisk X400 2.5 7MM 128GB

Above average average bench

The Sandisk X400 2.5 7MM 128GB averaged 35.5% 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 23.4MB/s
Avg. Sequential Read Speed 475MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Sandisk X400 2.5 7MM 128GB is 37.4%. This is a relatively wide range which indicates that the Sandisk X400 2.5 7MM 128GB performs inconsistently under varying real world conditions.


Avg. Sequential Write Speed 209MB/s
Avg. 4K-64Thread Mixed IO Speed 34.3MB/s

Average Bench

(Based on 219 samples)
Min Avg Max
421 Read 475 503
93.9 Write 209 320
164 Mixed 289 399
71.3% 324 MB/s
Min Avg Max
10.6 4K Read 23.4 32.3
20 4K Write 50.6 87.3
8 4K Mixed 17.8 27.8
85% 30.6 MB/s
Min Avg Max
16.3 DQ Read 166 330
35.1 DQ Write 165 256
7.82 DQ Mixed 34.3 55.6
61.8% 122 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
11GB free
Firmware: X4130012 Max speed: SATA 3.0 600 MB/s
Read 489
Write 301
Mixed 391
87% 393 MB/s
4K Read 28.8
4K Write 57
4K Mixed 14.5
92% 33.4 MB/s
DQ Read 323
DQ Write 270
DQ Mixed 55.4
107% 216 MB/s
36GB free
Firmware: X4152012 Max speed: SATA 3.0 600 MB/s
Read 484
Write 104
Mixed 263
62% 284 MB/s
4K Read 26.1
4K Write 59.2
4K Mixed 28.1
107% 37.8 MB/s
DQ Read 292
DQ Write 215
DQ Mixed 53.9
94% 187 MB/s
40GB free
Firmware: X4152012 Max speed: SATA 3.0 600 MB/s
Read 480
Write 104
Mixed 290
64% 291 MB/s
4K Read 19.3
4K Write 44.1
4K Mixed 10.8
66% 24.7 MB/s
DQ Read 160
DQ Write 197
DQ Mixed 9.67
54% 122 MB/s
219 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 5,667,951 SSDs tested.

Typical X400 2.5 7MM 128GB Builds (Compare 424 builds) See popular component choices, score breakdowns and rankings.
Gaming 18%
Desktop 62%
Workstation 36%
Jet ski

Motherboard: Dell OptiPlex 3050

EDIT WITH CUSTOM PC BUILDER Value: 95% - Outstanding Total price: $190

Popular X400 2.5 7MM 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) February 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.


885 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 i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $88
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $149
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $125
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $975SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
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