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WDC

PC SN520 SDAPMUW-256G-1101 256GB

▲ 500 ▼

Release date ≈ Q4 2018.

Average Bench: 150% (132nd of 1040)

Based on 4,429 user benchmarks.  Model: WDC PC SN520 SDAPMUW-256G-1101
Poor: 97%Average: 150% Great: 186%

Popular builds with this SSD

Outstanding average bench

The WDC PC SN520 SDAPMUW-256G-1101 256GB averaged 49.8% 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 621MB/s
Avg. 4K-64Thread Write Speed 667MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-256G-1101 256GB is 89.1%. 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 387MB/s
Avg. 4K Random Read Speed 37.8MB/s
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Average Bench

(Based on 4,429 samples)
Rank 132150%
Min Avg Max
588 Read 926 1,194
474 Write 873 1,217
436 Mixed 757 1,002
246 SusWrite 387 447
165% 736 MB/s
Min Avg Max
19.4 4K Read 37.8 47.3
55.5 4K Write 117 161
25.7 4K Mixed 53.9 69.7
188% 69.6 MB/s
Min Avg Max
324 DQ Read 728 858
225 DQ Write 667 1,137
267 DQ Mixed 621 734
487% 672 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
183GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 496 428 426 429 430 429 MB/s
174% Outstanding
Read 1,108
Write 841
Mixed 1002
SusWrite 440
190% 848 MB/s
4K Read 42.6
4K Write 115
4K Mixed 58.8
201% 72 MB/s
DQ Read 836
DQ Write 977
DQ Mixed 726
597% 847 MB/s
195GB free (System drive)
Firmware: 20290001
SusWrite @10s intervals: 511 417 417 417 416 418 MB/s
173% Outstanding
Read 1193
Write 1,238
Mixed 694
SusWrite 432
199% 889 MB/s
4K Read 36
4K Write 134
4K Mixed 59.7
202% 76.5 MB/s
DQ Read 720
DQ Write 903
DQ Mixed 729
573% 784 MB/s
178GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 509 316 324 331 325 286 MB/s
163% Outstanding
Read 1,176
Write 1,139
Mixed 994
SusWrite 348
205% 914 MB/s
4K Read 40.1
4K Write 124
4K Mixed 57.3
200% 73.7 MB/s
DQ Read 822
DQ Write 679
DQ Mixed 709
542% 737 MB/s
179GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 423 307 320 305 318 300 MB/s
154% Outstanding
Read 954
Write 980
Mixed 985
SusWrite 329
182% 812 MB/s
4K Read 41.1
4K Write 123
4K Mixed 61.6
206% 75.3 MB/s
DQ Read 855
DQ Write 540
DQ Mixed 573
461% 656 MB/s
89GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 379 236 233 231 223 226 MB/s
147% Outstanding
Read 663
Write 645
Mixed 633
SusWrite 255
123% 549 MB/s
4K Read 43.4
4K Write 124
4K Mixed 62.1
211% 76.6 MB/s
DQ Read 857
DQ Write 935
DQ Mixed 725
593% 839 MB/s
57GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 336 190 187 188 187 184 MB/s
137% Outstanding
Read 776
Write 715
Mixed 672
SusWrite 212
133% 594 MB/s
4K Read 41.8
4K Write 118
4K Mixed 61.2
204% 73.7 MB/s
DQ Read 835
DQ Write 462
DQ Mixed 656
486% 651 MB/s
4,429 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 32,765,331 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 598 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 12%
Tree trunk
Desktop
Desktop 71%
Battleship
Workstation
Workstation 11%
Tree trunk

System: Lenovo 81W8

CPU
Core i5-1035G1IntelBench 68%, 14,250 samples240x
Core i3-1005G1IntelBench 60%, 4,306 samples199x
Core i7-1065G7IntelBench 68%, 20,089 samples85x
GPU
UHD G1IntelBench 6%, 15,236 samples438x
Iris Plus G7IntelBench 12%, 16,902 samples85x
Iris Plus G4IntelBench 9%, 4,516 samples74x
SSD
PC SN520 SDAPMUW-256G-1101 256GBWDCBench 150%, 4,429 samples170x
RAM
M471A5244CB0-CTD Micron 4ATF51264HZ-3G2J1 8GBSamsungBench 69%, 466 samples145x
M471A5244CB0-CTD M471A5244CB0-CTD 8GBSamsungBench 71%, 134 samples92x
4ATF51264HZ-3G2J1 1x4GBMicronBench 34%, 1,773 samples81x
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.
  • - 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) October 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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Speed Comparisons

vs Crucial MX500 250GB
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1040 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 i5-9600K $199Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $45
Intel Core i5-9400F $140Nvidia RTX 3080 $700Samsung 850 Evo 120GB $78
Intel Core i5-10600K $260Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $50
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $63SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $548SanDisk Extreme 16GB $28
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