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WDC

PC SN520 SDAPMUW-256G-1101 256GB

▲ 500 ▼

Release date ≈ Q4 2018.

Average Bench: 148% (121st of 1021)

Based on 2,952 user benchmarks.  Model: WDC PC SN520 SDAPMUW-256G-1101
Poor: 100%Average: 148% Great: 181%

Popular builds with this SSD

Outstanding average bench

The WDC PC SN520 SDAPMUW-256G-1101 256GB averaged 47.8% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPMUW-256G-1101 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 611MB/s
Avg. 4K-64Thread Write Speed 652MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-256G-1101 256GB is 81.9%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPMUW-256G-1101 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 379MB/s
Avg. Sequential Mixed IO Speed 740MB/s
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Average Bench

(Based on 2,952 samples)
Rank 121148%
Min Avg Max
614 Read 897 1,189
549 Write 840 1,141
472 Mixed 740 996
243 SusWrite 379 446
160% 714 MB/s
Min Avg Max
20.6 4K Read 38 47.7
52.2 4K Write 117 163
25.5 4K Mixed 53.8 70.5
188% 69.5 MB/s
Min Avg Max
221 DQ Read 724 858
184 DQ Write 652 965
203 DQ Mixed 611 732
479% 663 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
187GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 472 480 421 420 419 418 MB/s
178% Outstanding
Read 1,197
Write 1,158
Mixed 1,002
SusWrite 438
213% 949 MB/s
4K Read 42.8
4K Write 136
4K Mixed 60.9
215% 79.7 MB/s
DQ Read 852
DQ Write 802
DQ Mixed 719
569% 791 MB/s
203GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 503 417 415 418 416 418 MB/s
176% Outstanding
Read 982
Write 886
Mixed 817
SusWrite 431
175% 779 MB/s
4K Read 45.3
4K Write 156
4K Mixed 65.8
236% 89.1 MB/s
DQ Read 847
DQ Write 861
DQ Mixed 718
577% 809 MB/s
203GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 500 417 398 426 424 425 MB/s
175% Outstanding
Read 974
Write 880
Mixed 830
SusWrite 432
175% 779 MB/s
4K Read 41.9
4K Write 159
4K Mixed 63.5
229% 88.3 MB/s
DQ Read 819
DQ Write 927
DQ Mixed 728
588% 825 MB/s
120GB free (System drive)
Firmware: 20110001
SusWrite @10s intervals: 335 275 287 289 273 264 MB/s
152% Outstanding
Read 787
Write 730
Mixed 708
SusWrite 287
141% 628 MB/s
4K Read 44.1
4K Write 123
4K Mixed 62.7
212% 76.6 MB/s
DQ Read 858
DQ Write 789
DQ Mixed 729
573% 792 MB/s
137GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 337 370 313 312 308 312 MB/s
145% Outstanding
Read 918
Write 789
Mixed 704
SusWrite 326
153% 684 MB/s
4K Read 37.8
4K Write 95.8
4K Mixed 59.5
184% 64.4 MB/s
DQ Read 808
DQ Write 559
DQ Mixed 703
520% 690 MB/s
2,952 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 26,445,205 SSDs tested.

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money.

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical PC SN520 SDAPMUW-256G-1101 256GB Builds (Compare 2,052 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 16%
Surfboard
Desktop
Desktop 80%
Aircraft carrier
Workstation
Workstation 53%
Yacht

System: Lenovo 81LB

CPU
Core i7-8750HIntelBench 79%, 252,909 samples1,462x
Core i5-8300HIntelBench 74%, 86,208 samples590x
GPU
UHD Graphics 630IntelBench 6%, 213,538 samples1,117x
GTX 1060 (Mobile)NvidiaBench 46%, 107,729 samples935x
SSD
PC SN520 SDAPMUW-256G-1101 256GBWDCBench 148%, 2,952 samples418x
RAM
M471A1K43CB1-CTD 1x8GBSamsungBench 40%, 40,681 samples703x
M471A1K43CB1-CTD 2x8GBSamsungBench 76%, 43,864 samples414x
M471A2K43CB1-CTD 1x16GBSamsungBench 44%, 21,669 samples381x
EDIT WITH CUSTOM PC BUILDER

Popular PC SN520 SDAPMUW-256G-1101 256GB 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.
  • - 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) May 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]

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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.

 Comments

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Reaching its prime
Age: 18 months

Speed Comparisons

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1021 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

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-9400F $165Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $199Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $365Nvidia RTX 2070S (Super) $500Samsung 860 Evo 250GB $55
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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