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WDC

PC SN520 SDAPMUW-256G-1101 256GB

▲ 500 ▼

Release date ≈ Q4 2018.

Average Bench: 142% (151st of 1058)

Based on 5,516 user benchmarks.  Model: WDC PC SN520 SDAPMUW-256G-1101
Poor: 91%Average: 142% Great: 183%

Popular builds with this SSD

Outstanding average bench

The WDC PC SN520 SDAPMUW-256G-1101 256GB averaged 41.9% 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 566MB/s
Avg. 4K-64Thread Read Speed 704MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-256G-1101 256GB is 91.7%. 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 335MB/s
Avg. Sequential Mixed IO Speed 699MB/s
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Average Bench

(Based on 5,516 samples)
Rank 151142%
Min Avg Max
541 Read 905 1,191
293 Write 803 1,178
366 Mixed 699 991
189 SusWrite 335 440
153% 686 MB/s
Min Avg Max
18.1 4K Read 40.2 47.4
48.5 4K Write 110 160
22.6 4K Mixed 52.2 69.4
186% 67.5 MB/s
Min Avg Max
300 DQ Read 704 858
163 DQ Write 562 948
199 DQ Mixed 566 731
442% 611 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
190GB free (System drive)
Firmware: 20290001
SusWrite @10s intervals: 461 419 422 410 422 417 MB/s
165% Outstanding
Read 874
Write 1,074
Mixed 561
SusWrite 425
165% 733 MB/s
4K Read 47.1
4K Write 147
4K Mixed 68.2
236% 87.3 MB/s
DQ Read 649
DQ Write 722
DQ Mixed 488
422% 619 MB/s
140GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 421 382 363 342 338 345 MB/s
135% Outstanding
Read 693
Write 811
Mixed 803
SusWrite 365
151% 668 MB/s
4K Read 36.3
4K Write 86
4K Mixed 58.1
175% 60.1 MB/s
DQ Read 830
DQ Write 498
DQ Mixed 585
457% 638 MB/s
171GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 235 291 314 271 275 268 MB/s
128% Outstanding
Read 1,023
Write 912
Mixed 658
SusWrite 276
160% 717 MB/s
4K Read 29.6
4K Write 82.8
4K Mixed 41.5
142% 51.3 MB/s
DQ Read 626
DQ Write 568
DQ Mixed 629
463% 608 MB/s
139GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 360 347 335 342 367 329 MB/s
119% Outstanding
Read 1,068
Write 872
Mixed 851
SusWrite 347
175% 784 MB/s
4K Read 30.4
4K Write 72.3
4K Mixed 38
133% 46.9 MB/s
DQ Read 388
DQ Write 240
DQ Mixed 312
233% 313 MB/s
144GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 153 183 155 154 233 352 MB/s
105% Outstanding
Read 893
Write 983
Mixed 805
SusWrite 205
162% 722 MB/s
4K Read 32.2
4K Write 67.7
4K Mixed 42.4
139% 47.4 MB/s
DQ Read 385
DQ Write 222
DQ Mixed 312
230% 306 MB/s
5,516 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,208,176 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 1,180 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 11%
Tree trunk
Desktop
Desktop 65%
Battle cruiser
Workstation
Workstation 10%
Tree trunk

System: Lenovo 81W8

CPU
Core i3-1005G1IntelBench 59%, 15,038 samples470x
Core i5-1035G1IntelBench 65%, 38,339 samples450x
Core i7-1065G7IntelBench 65%, 43,050 samples150x
GPU
UHD G1IntelBench 6%, 43,828 samples919x
Iris Plus G7IntelBench 11%, 37,163 samples150x
Iris Plus G4IntelBench 8%, 8,219 samples110x
SSD
PC SN520 SDAPMUW-256G-1101 256GBWDCBench 142%, 5,516 samples254x
RAM
M471A5244CB0-CTD Micron 4ATF51264HZ-3G2J1 8GBSamsungBench 68%, 771 samples240x
M471A5244CB0-CTD M471A5244CB0-CTD 8GBSamsungBench 70%, 391 samples184x
4ATF51264HZ-3G2J1 1x4GBMicronBench 36%, 4,708 samples146x
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.

UserBenchmark of the month

Gaming Desktop ProGaming

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]

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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.

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Speed Comparisons

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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

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 i5-11600K $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
HDDRAMUSB
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) $72G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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