Average Bench: 173% (92nd of 1011)

Based on 18 user benchmarks.  Model: WDC PC SN520 SDAPMUW-512G

Outstanding average bench

The WDC PC SN520 SDAPMUW-512G 512GB averaged 72.7% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPMUW-512G 512GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 846MB/s
Avg. 4K-64Thread Write Speed 798MB/s

Very poor consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-512G 512GB is 70.7%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPMUW-512G 512GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 659MB/s
Avg. Sequential Write Speed 726MB/s

Average Bench

(Based on 18 samples)
Min Avg Max
522 Read 829 1,117
506 Write 726 1002
488 Mixed 745 1,012
430 SusWrite 659 791
166% 739 MB/s
Min Avg Max
12.4 4K Read 37.5 48.1
68.7 4K Write 130 172
21.6 4K Mixed 58.5 72.6
200% 75.2 MB/s
Min Avg Max
44.9 DQ Read 877 1,084
155 DQ Write 798 1,065
62.6 DQ Mixed 846 1,061
632% 840 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
366GB free
Firmware: 20170000
SusWrite @10s intervals: 533 532 535 495 498 481 MB/s
Read 611
Write 608
Mixed 534
SusWrite 512
128% 566 MB/s
4K Read 26.2
4K Write 47.8
4K Mixed 26.9
100% 33.6 MB/s
DQ Read 36.8
DQ Write 110
DQ Mixed 52.6
46% 66.4 MB/s
18 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 16,799,775 SSDs tested.

Typical PC SN520 SDAPMUW-512G 512GB Builds (Compare 407 builds) See popular component choices, score breakdowns and rankings.
Gaming 16%
Desktop 69%
Battle cruiser
Workstation 35%
Jet ski

System: Lenovo 20L5CTO1WW


Popular PC SN520 SDAPMUW-512G 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) August 2019 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.


1011 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 i5-9400F $143AMD RX 580 $172Samsung 850 Evo 250GB $86
AMD Ryzen 5 3600 $198Nvidia GTX 1660 $220Samsung 850 Evo 500GB $103
Intel Core i5-9600K $219AMD RX 5700 XT $400Samsung 850 Pro 256GB $195
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 64GB $128
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $695SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $80Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 16GB $24
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