Average Bench: 142% (151st of 1058)

Based on 4,286 user benchmarks.  Model: PC SN520 NVMe WDC 512GB

Outstanding average bench

The PC SN520 NVMe WDC 512GB averaged 41.9% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the PC SN520 NVMe WDC 512GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 637MB/s
Avg. 4K-64Thread Read Speed 721MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the PC SN520 NVMe WDC 512GB is 100%. This is a particularly wide range which indicates that the PC SN520 NVMe WDC 512GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 500MB/s
Avg. 4K Random Write Speed 95.4MB/s

Average Bench

(Based on 4,286 samples)
Min Avg Max
548 Read 830 1,160
378 Write 847 1,264
400 Mixed 785 1,140
191 SusWrite 500 757
167% 741 MB/s
Min Avg Max
21.4 4K Read 35.9 44.9
42.2 4K Write 95.4 140
29.4 4K Mixed 50.2 64.8
169% 60.5 MB/s
Min Avg Max
299 DQ Read 721 1,082
146 DQ Write 427 832
222 DQ Mixed 637 999
458% 595 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
262GB free (System drive)
Firmware: 20200012 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 738 254 285 335 332 552 MB/s
Read 1,201
Write 999
Mixed 524
SusWrite 416
175% 785 MB/s
4K Read 14.7
4K Write 5.2
4K Mixed 35.4
70% 18.4 MB/s
372GB free (System drive)
Firmware: 20240012 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 276 375 299 300 374 430 MB/s
Read 266
Write 259
Mixed 287
SusWrite 342
65% 289 MB/s
4K Read 12.5
4K Write 33
4K Mixed 19.3
61% 21.6 MB/s
DQ Read 186
DQ Write 103
DQ Mixed 178
123% 156 MB/s
4,286 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 45,259,291 SSDs tested.

Typical SN520 NVMe WDC 512GB Builds (Compare 5,217 builds) See popular component choices, score breakdowns and rankings.
Gaming 11%
Tree trunk
Desktop 72%
Workstation 10%
Tree trunk

System: Dell G3 3590


Popular SN520 NVMe WDC 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.
  • - 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) July 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.


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 i5-11400F $239Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11600K $270Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $85SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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