Average Bench: 84.1% (367th of 1018)

Based on 4,778 user benchmarks.  Models: SanDisk SD8SB8U512G1122, SanDisk SD8SN8U512G1122, SanDis SD8SB8U512G1122

Very good average bench

The SanDisk X400 512GB averaged just 15.9% 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 35.6MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk X400 512GB is 45.9%. 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 235MB/s
Avg. Sequential Mixed IO Speed 261MB/s
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Average Bench

(Based on 4,778 samples)
Min Avg Max
354 Read 447 501
232 Write 375 477
195 Mixed 261 341
96.6 SusWrite 235 307
73.7% 330 MB/s
Min Avg Max
17.5 4K Read 27.7 38.3
32.6 4K Write 74.1 117
20.5 4K Mixed 35.6 50.5
127% 45.8 MB/s
Min Avg Max
157 DQ Read 318 371
137 DQ Write 250 287
68.4 DQ Mixed 199 236
172% 256 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
263GB free
Firmware: X4140000
SusWrite @10s intervals: 415 303 301 294 288 294 MB/s
Read 510
Write 490
Mixed 366
SusWrite 316
94% 420 MB/s
4K Read 41
4K Write 139
4K Mixed 55.5
207% 78.6 MB/s
DQ Read 343
DQ Write 290
DQ Mixed 236
199% 289 MB/s
400GB free (System drive)
Firmware: X4162000
SusWrite @10s intervals: 331 295 289 294 294 293 MB/s
Read 486
Write 480
Mixed 302
SusWrite 299
88% 392 MB/s
4K Read 36.5
4K Write 93.4
4K Mixed 47.5
166% 59.1 MB/s
DQ Read 311
DQ Write 271
DQ Mixed 229
189% 270 MB/s
400GB free (System drive)
Firmware: X4162000
SusWrite @10s intervals: 331 292 287 291 292 293 MB/s
Read 496
Write 469
Mixed 312
SusWrite 298
88% 394 MB/s
4K Read 34.7
4K Write 91.2
4K Mixed 46.6
161% 57.5 MB/s
DQ Read 307
DQ Write 275
DQ Mixed 226
187% 269 MB/s
400GB free (System drive)
Firmware: X4162000
SusWrite @10s intervals: 359 295 287 283 286 286 MB/s
Read 488
Write 465
Mixed 343
SusWrite 299
90% 399 MB/s
4K Read 35.2
4K Write 92.5
4K Mixed 46
161% 57.9 MB/s
DQ Read 270
DQ Write 268
DQ Mixed 216
177% 251 MB/s
390GB free (System drive)
Firmware: X4120000
SusWrite @10s intervals: 260 246 255 254 258 255 MB/s
Read 445
Write 322
Mixed 259
SusWrite 255
72% 320 MB/s
4K Read 26.1
4K Write 54.4
4K Mixed 30.6
108% 37 MB/s
DQ Read 332
DQ Write 268
DQ Mixed 183
169% 261 MB/s
4,778 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 24,146,455 SSDs tested.

 Prices

AmazonUS $1794 mins
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Typical X400 512GB Builds (Compare 7,988 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 73%
Battleship
Desktop
Desktop 73%
Battleship
Workstation
Workstation 53%
Yacht

Motherboard: MSI Z170A PC MATE (MS-7971) - $108

EDIT WITH CUSTOM PC BUILDER Value: 53% - Above average Total price: $1,035

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.

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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) April 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

1018 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 $210Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i7-9700K $360Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i5-9400F $146Nvidia RTX 2070S (Super) $500Samsung 850 Pro 512GB $249
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $84SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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