Average Bench: 78.2% (438th of 1003)

Based on 926 user benchmarks.  Model: SanDisk SD8SB8U256G1122

Good average bench

The SanDisk X400 256GB averaged 21.7% 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 185MB/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 164MB/s
Avg. Sequential Mixed IO Speed 234MB/s
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Average Bench

(Based on 926 samples)
Min Avg Max
320 Read 438 499
155 Write 312 465
129 Mixed 234 334
68.1 SusWrite 164 204
63.8% 287 MB/s
Min Avg Max
17.6 4K Read 28.9 39.5
34 4K Write 71.4 114
16.5 4K Mixed 34.9 48.4
126% 45 MB/s
Min Avg Max
66.4 DQ Read 300 372
90.7 DQ Write 222 275
34.4 DQ Mixed 185 237
159% 236 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
129GB free
Firmware: X4162000
SusWrite @10s intervals: 275 194 193 191 192 192 MB/s
Read 504
Write 482
Mixed 344
SusWrite 206
86% 384 MB/s
4K Read 41.5
4K Write 122
4K Mixed 55
198% 72.9 MB/s
DQ Read 326
DQ Write 284
DQ Mixed 235
195% 282 MB/s
116GB free
Firmware: X4162000
SusWrite @10s intervals: 251 202 201 201 200 200 MB/s
Read 497
Write 466
Mixed 333
SusWrite 209
84% 376 MB/s
4K Read 40.9
4K Write 115
4K Mixed 52.6
190% 69.6 MB/s
DQ Read 349
DQ Write 283
DQ Mixed 238
200% 290 MB/s
129GB free
Firmware: X4162000
SusWrite @10s intervals: 288 196 196 191 194 196 MB/s
Read 497
Write 462
Mixed 357
SusWrite 210
85% 382 MB/s
4K Read 40.9
4K Write 110
4K Mixed 53
188% 68 MB/s
DQ Read 342
DQ Write 286
DQ Mixed 238
199% 288 MB/s
103GB free
Firmware: X4162000
SusWrite @10s intervals: 289 197 196 189 191 189 MB/s
Read 499
Write 482
Mixed 373
SusWrite 208
88% 391 MB/s
4K Read 40.3
4K Write 116
4K Mixed 44.1
179% 66.8 MB/s
DQ Read 365
DQ Write 285
DQ Mixed 236
201% 296 MB/s
138GB free (System drive)
Firmware: X4120000
SusWrite @10s intervals: 207 171 177 103 178 93 MB/s
Read 428
Write 365
Mixed 172
SusWrite 155
62% 280 MB/s
4K Read 21.8
4K Write 37.1
4K Mixed 20.1
78% 26.3 MB/s
DQ Read 280
DQ Write 228
DQ Mixed 207
168% 238 MB/s
926 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 15,812,225 SSDs tested.

 Prices

AmazonUS $19414 mins
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Typical X400 256GB Builds (Compare 578 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 67%
Battle cruiser
Desktop
Desktop 70%
Battle cruiser
Workstation
Workstation 65%
Battle cruiser

Motherboard: MSI B350 TOMAHAWK PLUS (MS-7B36)

EDIT WITH CUSTOM PC BUILDER Value: 92% - Outstanding Total price: $617

Popular X400 256GB 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) July 2019 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

1003 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 i7-8700K $350Nvidia GTX 1070 $400Samsung 850 Evo 250GB $104
AMD Ryzen 5 2600 $127Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $103
AMD Ryzen 7 2700X $248Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $70G.SKILL Trident Z DDR4 3200 C14 4x16GB $607SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Ultra Fit 32GB $12
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