Today's hottest
Amazon Ebay
deals
TEST
YOUR SSD
ADD TO PC
BUILD

WDC

PC SN520 SDAPNUW-256G-1014 256GB

▲ 500 ▼

Release date ≈ Q1 2019.

Average Bench: 131% (184th of 1080)

Based on 2,257 user benchmarks.  Model: WDC PC SN520 SDAPNUW-256G-1014
Poor: 67%Average: 131% Great: 180%

Popular builds with this SSD

Outstanding average bench

The WDC PC SN520 SDAPNUW-256G-1014 256GB averaged 30.9% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPNUW-256G-1014 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 483MB/s
Avg. 4K-64Thread Read Speed 622MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPNUW-256G-1014 256GB is 113%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPNUW-256G-1014 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 317MB/s
Avg. 4K Random Write Speed 95.5MB/s

Average Bench

(Based on 2,257 samples)
Rank 184131%
Min Avg Max
363 Read 883 1,206
271 Write 812 1,191
321 Mixed 684 1,073
170 SusWrite 317 442
151% 674 MB/s
Min Avg Max
15.4 4K Read 38.8 47.1
24.1 4K Write 95.5 153
16.2 4K Mixed 47.2 68.2
170% 60.5 MB/s
Min Avg Max
153 DQ Read 622 855
104 DQ Write 466 940
118 DQ Mixed 483 730
377% 523 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
70GB free
Firmware: 20110000
SusWrite @10s intervals: 609 416 416 414 416 417 MB/s
212% Outstanding
Read 1,193
Write 1,186
Mixed 1013
SusWrite 448
215% 960 MB/s
4K Read 49.7
4K Write 233
4K Mixed 78.1
299% 120 MB/s
DQ Read 856
DQ Write 1,179
DQ Mixed 728
631% 921 MB/s
168GB free
Firmware: 20110000
SusWrite @10s intervals: 604 414 415 414 416 417 MB/s
199% Outstanding
Read 1,179
Write 1,237
Mixed 1,014
SusWrite 447
217% 969 MB/s
4K Read 46.8
4K Write 192
4K Mixed 68.4
260% 102 MB/s
DQ Read 858
DQ Write 1,172
DQ Mixed 733
632% 921 MB/s
192GB free (System drive)
Firmware: 20110000
SusWrite @10s intervals: 473 481 422 424 420 425 MB/s
196% Outstanding
Read 1,090
Write 1,032
Mixed 530
SusWrite 441
173% 773 MB/s
4K Read 43.3
4K Write 195
4K Mixed 73.3
262% 104 MB/s
DQ Read 852
DQ Write 1,149
DQ Mixed 731
627% 911 MB/s
100GB free (System drive)
Firmware: 20110000
SusWrite @10s intervals: 454 292 295 297 299 298 MB/s
95.5% Outstanding
Read 562
Write 512
Mixed 516
SusWrite 322
107% 478 MB/s
4K Read 29.7
4K Write 57.7
4K Mixed 35.2
121% 40.9 MB/s
DQ Read 422
DQ Write 296
DQ Mixed 380
278% 366 MB/s
62GB free (System drive)
Firmware: 20110000
SusWrite @10s intervals: 275 188 206 138 103 116 MB/s
74.5% Very good
Read 656
Write 410
Mixed 555
SusWrite 171
100% 448 MB/s
4K Read 27.1
4K Write 44.1
4K Mixed 33.8
108% 35 MB/s
DQ Read 106
DQ Write 72.2
DQ Mixed 109
76% 95.7 MB/s
172GB free (System drive)
Firmware: 20110000
SusWrite @10s intervals: 268 297 288 292 304 333 MB/s
34.5% Below average
Read 208
Write 189
Mixed 199
SusWrite 297
50% 223 MB/s
4K Read 5.3
4K Write 8.7
4K Mixed 4.2
18% 6.07 MB/s
DQ Read 61
DQ Write 57.8
DQ Mixed 55.8
43% 58.2 MB/s
2,257 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 77,137,183 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 SDAPNUW-256G-1014 256GB Builds (Compare 274 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 13%
Tree trunk
Desktop
Desktop 72%
Battleship
Workstation
Workstation 12%
Tree trunk

System: Acer Aspire A515-44

CPU
Ryzen 5 4500UAMDBench 71%, 28,533 samples169x
Ryzen 7 4700UAMDBench 75%, 19,248 samples65x
Ryzen 3 4300UAMDBench 68%, 4,587 samples40x
GPU
RX Vega 8 4000 (iGPU)AMDBench 13%, 162,082 samples274x
SSD
PC SN520 SDAPNUW-256G-1014 256GBWDCBench 131%, 2,257 samples1x
RAM
HMAA1GS6CMR6N-VK 1x8GBHynixBench 40%, 1,684 samples41x
4ATF51264HZ-3G2J1 Hynix HMA851S6CJR6N-VK 8GBMicronBench 66%, 1,340 samples31x
HMA851S6CJR6N-VK 2x4GBHynixBench 61%, 15,613 samples25x
EDIT WITH CUSTOM PC BUILDER

Popular PC SN520 SDAPNUW-256G-1014 256GB systems:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our 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 value for money 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) October 2024 SSD Rankings

Welcome to our 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.

 Comments

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 5 years

Speed Comparisons

vs WD Black SN850X M.2 2TB
vs WD Black SN850X M.2 1TB
vs Crucial T700 M.2 4TB
vs WD Black SN850X M.2 4TB
vs Samsung 990 Pro M.2 2TB
vs Samsung 990 Pro M.2 4TB
vs Samsung 990 Pro M.2 1TB
vs Crucial T705 M.2 2TB
vs Crucial T705 M.2 1TB

1080 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
Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark popular with users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-12600K $164Nvidia RTX 4060 $299WD Black SN850X M.2 2TB $150
Intel Core i5-12400F $112Nvidia RTX 4060-Ti $380WD Black SN850X M.2 1TB $75
Intel Core i5-13600K $218Nvidia RTX 4070 $500Crucial T700 M.2 4TB $350
Today's hottest
Amazon Ebay
deals
If you buy something via a price link, UserBenchmark may earn a commission
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback