Average Bench: 83.1% (424th of 1058)

Based on 7,277 user benchmarks.  Models: SanDisk SD8SB8U512G1122, SanDisk SD8SN8U512G1122, SanDis SD8SB8U512G1122

Very good average bench

The SanDisk X400 512GB averaged just 16.8% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the SanDisk X400 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 199MB/s
Avg. 4K Random Mixed IO Speed 35MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk X400 512GB is 45.2%. This is a relatively wide range which indicates that the SanDisk X400 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 234MB/s
Avg. Sequential Mixed IO Speed 259MB/s
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Average Bench

(Based on 7,277 samples)
Min Avg Max
345 Read 445 502
235 Write 369 476
180 Mixed 259 350
93.6 SusWrite 234 310
73% 327 MB/s
Min Avg Max
16 4K Read 27.3 37.8
31.8 4K Write 71.5 112
18.6 4K Mixed 35 48.2
124% 44.6 MB/s
Min Avg Max
219 DQ Read 326 371
108 DQ Write 244 287
121 DQ Mixed 199 236
172% 257 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
79GB free
Firmware: X4162000
SusWrite @10s intervals: 398 297 291 286 286 96 MB/s
Read 503
Write 486
Mixed 358
SusWrite 276
91% 406 MB/s
4K Read 38.1
4K Write 108
4K Mixed 50.5
180% 65.6 MB/s
DQ Read 357
DQ Write 282
DQ Mixed 237
200% 292 MB/s
247GB free
Firmware: X4120000
SusWrite @10s intervals: 283 253 243 238 247 244 MB/s
Read 395
Write 284
Mixed 250
SusWrite 251
66% 295 MB/s
4K Read 21.3
4K Write 48.8
4K Mixed 27
93% 32.4 MB/s
DQ Read 344
DQ Write 262
DQ Mixed 178
167% 261 MB/s
313GB free
Firmware: X4140000
SusWrite @10s intervals: 267 261 254 250 248 249 MB/s
Read 452
Write 347
Mixed 200
SusWrite 255
70% 313 MB/s
4K Read 20.2
4K Write 45.1
4K Mixed 21
81% 28.8 MB/s
DQ Read 328
DQ Write 266
DQ Mixed 228
190% 274 MB/s
439GB free (System drive)
Firmware: X4162000
SusWrite @10s intervals: 315 292 297 270 262 199 MB/s
Read 436
Write 389
Mixed 259
SusWrite 272
76% 339 MB/s
4K Read 29.1
4K Write 54.4
4K Mixed 24.4
104% 36 MB/s
DQ Read 138
DQ Write 51.9
DQ Mixed 71.2
59% 87 MB/s
439GB free (System drive)
Firmware: X4162000
SusWrite @10s intervals: 313 295 227 229 228 71 MB/s
Read 456
Write 375
Mixed 255
SusWrite 227
73% 328 MB/s
4K Read 21.5
4K Write 56.2
4K Mixed 13.7
80% 30.5 MB/s
DQ Read 137
DQ Write 52.5
DQ Mixed 70.2
58% 86.7 MB/s
439GB free (System drive)
Firmware: X4140000
SusWrite @10s intervals: 277 272 198 93 120 87 MB/s
Read 373
Write 212
Mixed 194
SusWrite 174
53% 238 MB/s
4K Read 23.9
4K Write 47.5
4K Mixed 16.2
82% 29.2 MB/s
DQ Read 117
DQ Write 46.3
DQ Mixed 65.3
53% 76.1 MB/s
7,277 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,300,798 SSDs tested.

 Prices

AmazonUS $454 months
EbayUS $1909 mins
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Typical X400 512GB Builds (Compare 4,664 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 70%
Battleship
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 60%
Gunboat

Motherboard: MSI Z170A PC MATE (MS-7971) - $145

EDIT WITH CUSTOM PC BUILDER Value: 63% - Good Total price: $986

Popular X400 512GB 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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) September 2021 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

1058 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 i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $394Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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