Average Bench: 116% (187th of 1058)

Based on 1,732 user benchmarks.  Model: WDC PC SN520 SDAPMUW-128G-1101

Outstanding average bench

The WDC PC SN520 SDAPMUW-128G-1101 128GB averaged 16.4% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPMUW-128G-1101 128GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 281MB/s
Avg. 4K Random Read Speed 42.3MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-128G-1101 128GB is 69.8%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPMUW-128G-1101 128GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 191MB/s
Avg. Sequential Mixed IO Speed 516MB/s

Average Bench

(Based on 1,732 samples)
Min Avg Max
444 Read 779 917
174 Write 580 752
245 Mixed 516 721
127 SusWrite 191 228
115% 517 MB/s
Min Avg Max
17.2 4K Read 42.3 47.8
41.8 4K Write 107 161
21.5 4K Mixed 48.8 68.8
183% 66.1 MB/s
Min Avg Max
270 DQ Read 397 439
189 DQ Write 399 591
189 DQ Mixed 281 402
243% 359 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
41GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 211 221 171 164 156 150 MB/s
Read 672
Write 614
Mixed 574
SusWrite 179
114% 510 MB/s
4K Read 35.7
4K Write 119
4K Mixed 58.4
192% 71 MB/s
DQ Read 435
DQ Write 574
DQ Mixed 243
256% 417 MB/s
60GB free (System drive)
Firmware: 20290001
SusWrite @10s intervals: 172 238 173 169 171 167 MB/s
Read 867
Write 721
Mixed 667
SusWrite 182
136% 609 MB/s
4K Read 29.2
4K Write 66.8
4K Mixed 27.3
115% 41.1 MB/s
DQ Read 432
DQ Write 474
DQ Mixed 240
239% 382 MB/s
1,732 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,244,480 SSDs tested.

Typical PC SN520 SDAPMUW-128G-1101 128GB Builds (Compare 4,054 builds) See popular component choices, score breakdowns and rankings.
Gaming 33%
Sail boat
Desktop 80%
Aircraft carrier
Workstation 27%

System: Lenovo 81SY


Popular PC SN520 SDAPMUW-128G-1101 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.

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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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) September 2021 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.


Added n/a ago.


9 months ago.

Great Speeds!

1058 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 i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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