TEST
YOUR SSD
ADD TO PC
BUILD

WDC

PC SN520 SDAPMUW-256G-1101 256GB

▲ 500 ▼

Release date ≈ Q4 2018.

Average Bench: 146% (119th of 1016)

Based on 2,017 user benchmarks.  Model: WDC PC SN520 SDAPMUW-256G-1101
Poor: 105%Average: 146% Great: 174%

Popular builds with this SSD

Outstanding average bench

The WDC PC SN520 SDAPMUW-256G-1101 256GB averaged 45.9% 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 616MB/s
Avg. 4K-64Thread Write Speed 631MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-256G-1101 256GB is 69.7%. 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 403MB/s
Avg. 4K Random Read Speed 36.4MB/s
ADVERTISEMENT

Average Bench

(Based on 2,017 samples)
Rank 119146%
Min Avg Max
611 Read 905 1,192
563 Write 857 1,158
475 Mixed 750 1,001
295 SusWrite 403 445
163% 729 MB/s
Min Avg Max
20.7 4K Read 36.4 46.9
56.9 4K Write 111 155
25.1 4K Mixed 50.6 67.6
179% 66 MB/s
Min Avg Max
286 DQ Read 716 858
235 DQ Write 631 948
295 DQ Mixed 616 733
478% 655 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
197GB free (System drive)
Firmware: 20110001
SusWrite @10s intervals: 467 421 427 425 427 425 MB/s
174% Outstanding
Read 1,072
Write 999
Mixed 901
SusWrite 432
191% 851 MB/s
4K Read 44.8
4K Write 134
4K Mixed 66.5
224% 81.8 MB/s
DQ Read 844
DQ Write 738
DQ Mixed 688
544% 756 MB/s
171GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 383 306 295 362 327 329 MB/s
166% Outstanding
Read 786
Write 726
Mixed 646
SusWrite 334
140% 623 MB/s
4K Read 47.4
4K Write 162
4K Mixed 70.4
248% 93.4 MB/s
DQ Read 860
DQ Write 832
DQ Mixed 732
581% 808 MB/s
170GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 496 419 419 417 420 421 MB/s
154% Outstanding
Read 761
Write 765
Mixed 655
SusWrite 432
147% 653 MB/s
4K Read 35.8
4K Write 120
4K Mixed 59.8
194% 71.7 MB/s
DQ Read 790
DQ Write 855
DQ Mixed 724
572% 790 MB/s
136GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 344 275 350 287 279 276 MB/s
151% Outstanding
Read 793
Write 759
Mixed 627
SusWrite 302
139% 620 MB/s
4K Read 32.7
4K Write 130
4K Mixed 62.3
198% 74.9 MB/s
DQ Read 829
DQ Write 929
DQ Mixed 725
588% 828 MB/s
50GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 431 464 380 359 353 351 MB/s
140% Outstanding
Read 840
Write 824
Mixed 750
SusWrite 390
157% 701 MB/s
4K Read 38.2
4K Write 88.1
4K Mixed 52.3
172% 59.5 MB/s
DQ Read 781
DQ Write 522
DQ Mixed 613
468% 639 MB/s
127GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 412 385 339 340 327 316 MB/s
109% Outstanding
Read 729
Write 421
Mixed 441
SusWrite 353
108% 486 MB/s
4K Read 24.4
4K Write 86.5
4K Mixed 35.4
128% 48.8 MB/s
DQ Read 450
DQ Write 384
DQ Mixed 386
298% 407 MB/s
2,017 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,397,007 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 1,702 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 15%
Surfboard
Desktop
Desktop 74%
Battleship
Workstation
Workstation 46%
Yacht

System: Lenovo 81LB

CPU
Core i7-8750HIntelBench 73%, 205,613 samples1,217x
Core i5-8300HIntelBench 67%, 66,291 samples485x
GPU
UHD Graphics 630IntelBench 6%, 151,293 samples953x
GTX 1060 (Mobile)NvidiaBench 46%, 94,594 samples749x
SSD
PC SN520 SDAPMUW-256G-1101 256GBWDCBench 146%, 2,017 samples366x
RAM
M471A1K43CB1-CTD 1x8GBSamsungBench 41%, 27,438 samples580x
M471A1K43CB1-CTD 2x8GBSamsungBench 76%, 29,915 samples349x
M471A2K43CB1-CTD 1x16GBSamsungBench 45%, 16,911 samples329x
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 Workstation

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) January 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]

ADVERTISEMENT

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

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Reaching its prime
Age: 14 months

Speed Comparisons

vs Crucial MX500 250GB
vs Samsung 850 Evo 120GB
vs Samsung 850 Pro 512GB
vs Samsung 860 Evo 250GB
vs Samsung 850 Evo 250GB
vs HyperX Savage 240GB
vs Samsung 850 Evo 1TB
vs Crucial MX300 275GB
vs Crucial MX200 250GB

1016 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 $205Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $45
Intel Core i5-9400F $150Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $375Nvidia RTX 2060 $349Samsung 850 Pro 512GB $249
HDDRAMUSB
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Ultra Fit 32GB $14
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Test your PC Build a PC
Can You Run It?
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback