Average Bench: 83% (397th of 1030)

Based on 5,045 user benchmarks.  Models: SanDisk SD8SB8U512G1122, SanDisk SD8SN8U512G1122, SanDis SD8SB8U512G1122

Very good average bench

The SanDisk X400 512GB averaged just 17.0% 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 199MB/s
Avg. 4K Random Mixed IO Speed 34.9MB/s

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk X400 512GB is 40.9%. 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 229MB/s
Avg. Sequential Mixed IO Speed 259MB/s
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Average Bench

(Based on 5,045 samples)
Min Avg Max
371 Read 449 501
242 Write 378 473
174 Mixed 259 342
90 SusWrite 229 304
73.5% 329 MB/s
Min Avg Max
17.4 4K Read 27.7 37.4
30.5 4K Write 70.7 115
21.1 4K Mixed 34.9 49.6
124% 44.4 MB/s
Min Avg Max
218 DQ Read 326 372
98.2 DQ Write 245 287
115 DQ Mixed 199 235
172% 257 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
83GB free (System drive)
Firmware: X4140000
SusWrite @10s intervals: 171 150 51 62 58 53 MB/s
Read 360
Write 326
Mixed 240
SusWrite 90.9
57% 254 MB/s
4K Read 31.1
4K Write 105
4K Mixed 35.7
148% 57.2 MB/s
DQ Read 337
DQ Write 216
DQ Mixed 171
156% 241 MB/s
371GB free (System drive)
Firmware: X4140000
SusWrite @10s intervals: 318 300 275 274 269 265 MB/s
Read 276
Write 435
Mixed 239
SusWrite 283
70% 308 MB/s
4K Read 26.4
4K Write 66.9
4K Mixed 35.6
121% 43 MB/s
DQ Read 63.6
DQ Write 104
DQ Mixed 68.3
56% 78.5 MB/s
269GB free
Firmware: X4120000
SusWrite @10s intervals: 245 242 254 246 249 245 MB/s
Read 362
Write 290
Mixed 213
SusWrite 247
62% 278 MB/s
4K Read 23
4K Write 29.5
4K Mixed 27.1
85% 26.5 MB/s
DQ Read 294
DQ Write 47
DQ Mixed 112
97% 151 MB/s
76GB free (System drive)
Firmware: X4140000
SusWrite @10s intervals: 131 132 103 62 64 63 MB/s
Read 407
Write 315
Mixed 241
SusWrite 92.5
59% 264 MB/s
4K Read 20.4
4K Write 31
4K Mixed 20.2
73% 23.9 MB/s
DQ Read 256
DQ Write 279
DQ Mixed 196
167% 244 MB/s
5,045 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 29,688,264 SSDs tested.

 Prices

AmazonUS $1933 mins
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Typical X400 512GB Builds (Compare 1,898 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 70%
Battleship
Desktop
Desktop 89%
Aircraft carrier
Workstation
Workstation 60%
Gunboat

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

EDIT WITH CUSTOM PC BUILDER Value: 57% - Above average Total price: $993

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) August 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

1030 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 $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $46
Intel Core i5-9400F $153Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $335Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $50
HDDRAMUSB
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $60SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
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