Average Bench: 63.6% (508th of 921)

Based on 372 user benchmarks.  Model: SanDisk SD8SB8U512G1002

Above average average bench

The Sandisk SD8SB8U512G1002 512GB averaged 36.3% 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 Random Read Speed 23.1MB/s
Avg. Sequential Read Speed 480MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Sandisk SD8SB8U512G1002 512GB is 22.8%. This is a relatively narrow range which indicates that the Sandisk SD8SB8U512G1002 512GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 27.8MB/s
Avg. 4K Random Mixed IO Speed 13.4MB/s

Average Bench

(Based on 372 samples)
Min Avg Max
460 Read 480 493
182 Write 262 337
210 Mixed 266 324
74% 336 MB/s
Min Avg Max
16.9 4K Read 23.1 28.8
24.5 4K Write 36.7 60.8
7.89 4K Mixed 13.4 18.9
71.7% 24.4 MB/s
Min Avg Max
22.7 DQ Read 196 326
35.1 DQ Write 136 189
7.28 DQ Mixed 27.8 42.3
58.2% 120 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
383GB free
Firmware: X4131002 Max speed: SATA 3.0 600 MB/s
Read 481
Write 322
Mixed 313
82% 372 MB/s
4K Read 26.2
4K Write 36.9
4K Mixed 17.4
82% 26.9 MB/s
DQ Read 276
DQ Write 179
DQ Mixed 8.96
66% 155 MB/s
415GB free
Firmware: X4131002 Max speed: SATA 3.0 600 MB/s
Read 470
Write 259
Mixed 260
72% 329 MB/s
4K Read 25.9
4K Write 40.8
4K Mixed 14.9
80% 27.2 MB/s
DQ Read 281
DQ Write 188
DQ Mixed 40.8
83% 170 MB/s
441GB free
Firmware: X4131002 Max speed: SATA 3.0 600 MB/s
Read 481
Write 165
Mixed 241
65% 296 MB/s
4K Read 20.7
4K Write 29.7
4K Mixed 9.74
60% 20 MB/s
DQ Read 25.9
DQ Write 39.9
DQ Mixed 7.76
13% 24.5 MB/s
372 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,476,257 SSDs tested.

Typical SD8SB8U512G1002 512GB Builds (Compare 1,866 builds) See popular component choices, score breakdowns and rankings.
Gaming 64%
Desktop 56%
Workstation 36%
Jet ski

System: Asus G11CD

EDIT WITH CUSTOM PC BUILDER Value: 83% - Excellent Total price: $466

Popular SD8SB8U512G1002 512GB 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.

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How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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Solid State Drive Rankings (Price vs Performance) April 2018 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


921 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 i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $90
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $290Samsung 850 Evo 500GB $137
AMD Ryzen 5 1600 $176AMD RX 480 $350Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $183SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $193SanDisk Extreme 16GB $18
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