Average Bench: 83.9% (393rd of 1040)

Based on 5,998 user benchmarks.  Models: SanDisk SD8SB8U512G1122, SanDisk SD8SN8U512G1122, SanDis SD8SB8U512G1122

Very good average bench

The SanDisk X400 512GB averaged just 16.0% 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 200MB/s
Avg. 4K Random Mixed IO Speed 35.5MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk X400 512GB is 41.8%. 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 228MB/s
Avg. Sequential Mixed IO Speed 259MB/s
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Average Bench

(Based on 5,998 samples)
Min Avg Max
366 Read 451 503
198 Write 368 477
184 Mixed 259 348
91.6 SusWrite 228 304
72.9% 326 MB/s
Min Avg Max
17.8 4K Read 28 38
35.4 4K Write 73.4 117
21.5 4K Mixed 35.5 48.7
127% 45.7 MB/s
Min Avg Max
219 DQ Read 329 374
138 DQ Write 248 287
136 DQ Mixed 200 236
174% 259 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
199GB free (System drive)
Firmware: 0000
SusWrite @10s intervals: 235 212 204 158 208 142 MB/s
Read 415
Write 317
Mixed 226
SusWrite 193
64% 288 MB/s
4K Read 35.5
4K Write 97.2
4K Mixed 46.6
165% 59.8 MB/s
DQ Read 372
DQ Write 243
DQ Mixed 173
166% 263 MB/s
248GB free (System drive)
Firmware: X4162000
SusWrite @10s intervals: 318 301 283 274 290 287 MB/s
Read 457
Write 424
Mixed 273
SusWrite 292
81% 362 MB/s
4K Read 27.6
4K Write 52.9
4K Mixed 32.1
111% 37.5 MB/s
DQ Read 349
DQ Write 261
DQ Mixed 223
189% 278 MB/s
269GB free
Firmware: X4120000
SusWrite @10s intervals: 197 227 228 234 246 246 MB/s
Read 467
Write 363
Mixed 276
SusWrite 230
74% 334 MB/s
4K Read 21.7
4K Write 52.2
4K Mixed 33.2
103% 35.7 MB/s
DQ Read 275
DQ Write 191
DQ Mixed 204
160% 223 MB/s
89GB free (System drive)
Firmware: X4120000
SusWrite @10s intervals: 185 104 103 64 47 57 MB/s
Read 392
Write 270
Mixed 156
SusWrite 93.5
50% 228 MB/s
4K Read 25.6
4K Write 109
4K Mixed 26.5
130% 53.7 MB/s
DQ Read 376
DQ Write 178
DQ Mixed 171
155% 242 MB/s
412GB free (System drive)
Firmware: X4120000
SusWrite @10s intervals: 233 270 278 274 280 279 MB/s
Read 357
Write 346
Mixed 176
SusWrite 269
64% 287 MB/s
4K Read 27.9
4K Write 64.7
4K Mixed 34.9
121% 42.5 MB/s
DQ Read 32.3
DQ Write 101
DQ Mixed 39.5
38% 57.7 MB/s
161GB free (System drive)
Firmware: X4120000
SusWrite @10s intervals: 252 222 253 252 249 219 MB/s
Read 460
Write 424
Mixed 230
SusWrite 241
76% 339 MB/s
4K Read 19.7
4K Write 37.3
4K Mixed 26.8
84% 27.9 MB/s
DQ Read 277
DQ Write 228
DQ Mixed 196
162% 234 MB/s
5,998 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 38,032,373 SSDs tested.

 Prices

AmazonUS $2003 months
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Typical X400 512GB Builds (Compare 3,402 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 71%
Battleship
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 60%
Destroyer

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

EDIT WITH CUSTOM PC BUILDER Value: 58% - Above average Total price: $978

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) January 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

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 i5-10600K $257Nvidia RTX 3060-Ti $400Crucial MX500 250GB $47
Intel Core i5-9600K $219Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i5-10400F $161Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $40
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $29Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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