Average Bench: 55.9% (781st of 1016)

Based on 148 user benchmarks.  Model: SanDisk SD8SB8U128G1002

Average average bench

The Sandisk SD8SB8U128G1002 128GB averaged 44.1% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K-64Thread Mixed IO Speed 110MB/s
Avg. 4K Random Read Speed 22.2MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Sandisk SD8SB8U128G1002 128GB is 31.1%. This is a relatively narrow range which indicates that the Sandisk SD8SB8U128G1002 128GB performs reasonably consistently under varying real world conditions.


Avg. Sustained Write Speed 89.5MB/s
Avg. Sequential Write Speed 204MB/s

Average Bench

(Based on 148 samples)
Min Avg Max
317 Read 405 481
87.2 Write 204 331
132 Mixed 206 288
51.3 SusWrite 89.5 108
49.9% 226 MB/s
Min Avg Max
10.8 4K Read 22.2 33.3
20.2 4K Write 43.6 72.3
7.56 4K Mixed 20.2 35.2
82.6% 28.7 MB/s
Min Avg Max
22.3 DQ Read 190 349
33.9 DQ Write 148 236
6.51 DQ Mixed 110 221
98.5% 149 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
62GB free (System drive)
Firmware: X4131002
SusWrite @10s intervals: 102 95 86 62 94 66 MB/s
Read 342
Write 217
Mixed 248
SusWrite 84.1
50% 223 MB/s
4K Read 22
4K Write 67.2
4K Mixed 30.2
108% 39.8 MB/s
DQ Read 328
DQ Write 194
DQ Mixed 182
157% 235 MB/s
77GB free (System drive)
Firmware: X4131002
SusWrite @10s intervals: 116 99 96 99 99 96 MB/s
Read 455
Write 216
Mixed 212
SusWrite 101
54% 246 MB/s
4K Read 23.9
4K Write 48.8
4K Mixed 25.4
95% 32.7 MB/s
DQ Read 143
DQ Write 139
DQ Mixed 131
101% 138 MB/s
39GB free (System drive)
Firmware: X4131002
SusWrite @10s intervals: 141 81 90 61 57 86 MB/s
Read 323
Write 297
Mixed 214
SusWrite 86.1
51% 230 MB/s
4K Read 23.5
4K Write 40.9
4K Mixed 27.4
92% 30.6 MB/s
DQ Read 184
DQ Write 167
DQ Mixed 159
124% 170 MB/s
148 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,545,781 SSDs tested.

Typical SD8SB8U128G1002 128GB Builds (Compare 1,107 builds) See popular component choices, score breakdowns and rankings.
Gaming 15%
Tree trunk
Desktop 51%
Workstation 32%
Sail boat

System: Asus X550VXK


Popular SD8SB8U128G1002 128GB systems:

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.

UserBenchmark of the month

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 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]


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.


1016 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.
Intel Core i5-9600K $218Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $42
Intel Core i5-9400F $154Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $356Nvidia RTX 2060 $349Samsung 850 Pro 512GB $224
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $42Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $653SanDisk Ultra Fit 32GB $16
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