Average Bench: 64.5% (753rd of 1080)

Based on 12,357 user benchmarks.  Model: SanDisk X400 M.2 2280 128GB

Above average average bench

The Sandisk X400 M.2 2280 128GB averaged 35.4% 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-64Thread Mixed IO Speed 195MB/s
Avg. 4K-64Thread Read Speed 323MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Sandisk X400 M.2 2280 128GB is 41.3%. This is a relatively wide range which indicates that the Sandisk X400 M.2 2280 128GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 88.6MB/s
Avg. Sequential Mixed IO Speed 215MB/s

Average Bench

(Based on 12,357 samples)
Min Avg Max
309 Read 403 484
94.2 Write 224 333
110 Mixed 215 319
52.6 SusWrite 88.6 114
51.5% 233 MB/s
Min Avg Max
11.2 4K Read 23.9 37
26.9 4K Write 51.6 102
11.8 4K Mixed 28.9 45.8
101% 34.8 MB/s
Min Avg Max
221 DQ Read 323 367
120 DQ Write 211 269
119 DQ Mixed 195 234
165% 243 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
119GB free
Firmware: X4130012
SusWrite @10s intervals: 295 101 101 97 101 90 MB/s
Read 502
Write 317
Mixed 334
SusWrite 131
71% 321 MB/s
4K Read 40
4K Write 115
4K Mixed 52.2
188% 69.1 MB/s
DQ Read 349
DQ Write 277
DQ Mixed 227
193% 284 MB/s
54GB free (System drive)
Firmware: X4152012
SusWrite @10s intervals: 106 86 86 85 84 82 MB/s
Read 469
Write 166
Mixed 185
SusWrite 88.2
50% 227 MB/s
4K Read 27.7
4K Write 49.7
4K Mixed 32.6
110% 36.7 MB/s
DQ Read 316
DQ Write 232
DQ Mixed 192
166% 247 MB/s
17GB free (System drive)
Firmware: X4152012
SusWrite @10s intervals: 92 50 56 48 70 36 MB/s
Read 365
Write 128
Mixed 123
SusWrite 58.8
37% 169 MB/s
4K Read 22.1
4K Write 27.1
4K Mixed 21.9
76% 23.7 MB/s
DQ Read 354
DQ Write 112
DQ Mixed 178
146% 215 MB/s
12,357 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 76,410,406 SSDs tested

Typical X400 M.2 2280 128GB Builds (Compare 5,482 builds) See popular component choices, score breakdowns and rankings
Gaming 7%
Tree trunk
Desktop 58%
Workstation 6%
Tree trunk

System: Dell Inspiron 15 7000 Gaming - $799


Popular X400 M.2 2280 128GB systems:

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The Best
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