Average Bench: 167% (99th of 1016)

Based on 1,839 user benchmarks.  Model: WDC PC SN520 SDAPMUW-512G-1101

Outstanding average bench

The WDC PC SN520 SDAPMUW-512G-1101 512GB averaged 67.2% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPMUW-512G-1101 512GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 745MB/s
Avg. 4K-64Thread Read Speed 840MB/s

Very poor consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-512G-1101 512GB is 74.3%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPMUW-512G-1101 512GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 681MB/s
Avg. 4K Random Read Speed 37.3MB/s

Average Bench

(Based on 1,839 samples)
Min Avg Max
575 Read 884 1,222
543 Write 880 1,234
509 Mixed 773 1,069
416 SusWrite 681 774
181% 805 MB/s
Min Avg Max
22.6 4K Read 37.3 46.8
60.9 4K Write 112 156
27.5 4K Mixed 52.8 68.6
183% 67.3 MB/s
Min Avg Max
409 DQ Read 840 1,082
258 DQ Write 665 998
318 DQ Mixed 745 1,065
560% 750 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
329GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 802 752 728 627 436 439 MB/s
Read 1,182
Write 1,074
Mixed 992
SusWrite 631
218% 970 MB/s
4K Read 34.3
4K Write 115
4K Mixed 44.9
170% 64.6 MB/s
DQ Read 857
DQ Write 534
DQ Mixed 672
507% 687 MB/s
417GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 546 518 474 518 446 521 MB/s
Read 425
Write 536
Mixed 347
SusWrite 504
102% 453 MB/s
4K Read 40.5
4K Write 128
4K Mixed 61.3
208% 76.6 MB/s
DQ Read 674
DQ Write 366
DQ Mixed 596
423% 545 MB/s
1,839 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,681,597 SSDs tested.

Typical PC SN520 SDAPMUW-512G-1101 512GB Builds (Compare 2,993 builds) See popular component choices, score breakdowns and rankings.
Gaming 15%
Desktop 75%
Workstation 41%
Speed boat

System: Lenovo 81LK


Popular PC SN520 SDAPMUW-512G-1101 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.

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.
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Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $370Nvidia RTX 2060 $340Samsung 850 Pro 512GB $204
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WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $643SanDisk Ultra Fit 32GB $16
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