Average Bench: 77.7% (492nd of 1040)

Based on 1,350 user benchmarks.  Model: SanDisk SD8SB8U256G1122

Good average bench

The SanDisk X400 256GB averaged 22.2% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the SanDisk X400 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 196MB/s
Avg. 4K Random Mixed IO Speed 34.9MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk X400 256GB is 40.7%. This is a relatively wide range which indicates that the SanDisk X400 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 160MB/s
Avg. Sequential Mixed IO Speed 225MB/s
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Average Bench

(Based on 1,350 samples)
Min Avg Max
349 Read 437 501
188 Write 316 454
120 Mixed 225 320
67.8 SusWrite 160 203
63.2% 284 MB/s
Min Avg Max
15.4 4K Read 28.1 39.5
30.9 4K Write 71.9 112
19.2 4K Mixed 34.9 50.3
125% 45 MB/s
Min Avg Max
41.8 DQ Read 305 367
113 DQ Write 225 273
43.2 DQ Mixed 196 235
165% 242 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
75GB free (System drive)
Firmware: X4140000
SusWrite @10s intervals: 224 185 179 174 139 171 MB/s
Read 472
Write 462
Mixed 321
SusWrite 178
80% 358 MB/s
4K Read 39.1
4K Write 102
4K Mixed 48.7
176% 63.3 MB/s
DQ Read 379
DQ Write 266
DQ Mixed 231
197% 292 MB/s
156GB free
Firmware: X4140000
SusWrite @10s intervals: 213 201 198 199 198 198 MB/s
Read 484
Write 463
Mixed 249
SusWrite 201
78% 349 MB/s
4K Read 31.2
4K Write 64.9
4K Mixed 38.9
132% 45 MB/s
DQ Read 343
DQ Write 272
DQ Mixed 233
195% 283 MB/s
54GB free
Firmware: X4162000
SusWrite @10s intervals: 250 197 197 195 195 195 MB/s
Read 463
Write 440
Mixed 331
SusWrite 205
81% 360 MB/s
4K Read 29.5
4K Write 59.5
4K Mixed 37.3
124% 42.1 MB/s
DQ Read 332
DQ Write 290
DQ Mixed 238
198% 287 MB/s
64GB free (System drive)
Firmware: X4120000
SusWrite @10s intervals: 143 132 45 100 72 80 MB/s
Read 306
Write 190
Mixed 150
SusWrite 95.1
41% 185 MB/s
4K Read 34.5
4K Write 101
4K Mixed 45.2
164% 60.3 MB/s
DQ Read 351
DQ Write 206
DQ Mixed 181
161% 246 MB/s
71GB free
Firmware: X4120000
SusWrite @10s intervals: 220 193 193 196 195 195 MB/s
Read 443
Write 225
Mixed 178
SusWrite 199
58% 261 MB/s
4K Read 18.6
4K Write 51.5
4K Mixed 18.8
80% 29.6 MB/s
DQ Read 109
DQ Write 48.9
DQ Mixed 57.6
48% 71.8 MB/s
142GB free (System drive)
Firmware: X4120000
SusWrite @10s intervals: 175 171 166 169 175 171 MB/s
Read 325
Write 255
Mixed 203
SusWrite 171
53% 239 MB/s
4K Read 16.5
4K Write 27.2
4K Mixed 19.1
64% 20.9 MB/s
DQ Read 308
DQ Write 249
DQ Mixed 204
173% 254 MB/s
1,350 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 33,129,171 SSDs tested.

 Prices

AmazonUS $1557 months
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Typical X400 256GB Builds (Compare 114 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 6%
Tree trunk
Desktop
Desktop 54%
Yacht
Workstation
Workstation 6%
Tree trunk

System: Asus K53SM

EDIT WITH CUSTOM PC BUILDER Value: 40% - Below average Total price: $355

Popular X400 256GB 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.
  • - 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 2020 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]

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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.

 Comments

1040 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.
CPUGPUSSD
Intel Core i5-9600K $185Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $46
Intel Core i5-9400F $142Nvidia RTX 3080 $700Samsung 850 Evo 120GB $78
Intel Core i5-10600K $260Nvidia GTX 1650S (Super) $170Samsung 860 Evo 250GB $50
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $69SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $548SanDisk Extreme 16GB $28
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