Average Bench: 80% (426th of 1011)

Based on 909 user benchmarks.  Model: SanDisk SD8SB8U256G1122

Very good average bench

The SanDisk X400 256GB averaged just 19.9% 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 36.3MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk X400 256GB is 41.1%. 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 165MB/s
Avg. Sequential Mixed IO Speed 235MB/s
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Average Bench

(Based on 909 samples)
Min Avg Max
328 Read 442 501
169 Write 325 473
133 Mixed 235 341
78.5 SusWrite 165 206
64.9% 292 MB/s
Min Avg Max
17.5 4K Read 29.7 40.3
35.6 4K Write 73.8 118
21.3 4K Mixed 36.3 50.8
131% 46.6 MB/s
Min Avg Max
40.2 DQ Read 308 373
91.8 DQ Write 229 277
41.9 DQ Mixed 196 238
166% 244 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
117GB free (System drive)
Firmware: X4162000
SusWrite @10s intervals: 252 199 197 183 199 195 MB/s
Read 470
Write 447
Mixed 318
SusWrite 204
81% 360 MB/s
4K Read 28.5
4K Write 51.5
4K Mixed 34.7
115% 38.2 MB/s
DQ Read 349
DQ Write 286
DQ Mixed 236
199% 290 MB/s
117GB free (System drive)
Firmware: X4162000
SusWrite @10s intervals: 214 197 195 179 194 197 MB/s
Read 462
Write 445
Mixed 287
SusWrite 196
78% 347 MB/s
4K Read 28.7
4K Write 52
4K Mixed 34.1
115% 38.3 MB/s
DQ Read 298
DQ Write 258
DQ Mixed 239
190% 265 MB/s
63GB free
Firmware: X4140000
SusWrite @10s intervals: 216 199 194 185 178 188 MB/s
Read 482
Write 303
Mixed 190
SusWrite 193
65% 292 MB/s
4K Read 25.9
4K Write 77.3
4K Mixed 26.3
114% 43.2 MB/s
DQ Read 354
DQ Write 228
DQ Mixed 230
188% 271 MB/s
119GB free (System drive)
Firmware: X4162000
SusWrite @10s intervals: 160 176 80 112 91 94 MB/s
Read 508
Write 330
Mixed 194
SusWrite 119
64% 288 MB/s
4K Read 33.3
4K Write 91.4
4K Mixed 42.9
154% 55.9 MB/s
DQ Read 36.6
DQ Write 84.1
DQ Mixed 45
39% 55.2 MB/s
48GB free
Firmware: X4120000
SusWrite @10s intervals: 159 90 88 76 76 74 MB/s
Read 463
Write 204
Mixed 190
SusWrite 93.7
52% 238 MB/s
4K Read 29.9
4K Write 48.6
4K Mixed 18.7
95% 32.4 MB/s
DQ Read 320
DQ Write 259
DQ Mixed 122
137% 234 MB/s
20GB free (System drive)
Firmware: X4120000
SusWrite @10s intervals: 175 167 121 119 94 45 MB/s
Read 302
Write 236
Mixed 120
SusWrite 120
43% 195 MB/s
4K Read 28.8
4K Write 54.5
4K Mixed 21.5
100% 34.9 MB/s
DQ Read 322
DQ Write 233
DQ Mixed 197
169% 250 MB/s
909 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,849,350 SSDs tested.

 Prices

EbayUS $1203 secs
AmazonUS $15514 mins
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Typical X400 256GB Builds (Compare 678 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 55%
Yacht
Desktop
Desktop 63%
Destroyer
Workstation
Workstation 54%
Yacht

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

EDIT WITH CUSTOM PC BUILDER Value: 55% - Above average Total price: $571

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) December 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

1011 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 i5-9400F $145Nvidia GTX 1660S (Super) $244Crucial MX500 250GB $39
Intel Core i5-9600K $200Nvidia RTX 2060 $324Samsung 850 Evo 120GB $150
Intel Core i7-9700K $360AMD RX 590 $180Samsung 860 Evo 250GB $54
HDDRAMUSB
Seagate Barracuda 1TB (2016) $32Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $58SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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