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WDC

PC SN520 SDAPNUW-256G-1002 256GB

▲ 505 ▼

Release date ≈ Q4 2018.

Average Bench: 141% (167th of 1072)

Based on 16,774 user benchmarks.  Model: WDC PC SN520 SDAPNUW-256G-1002
Poor: 86%Average: 141% Great: 187%

Popular builds with this SSD

Outstanding average bench

The WDC PC SN520 SDAPNUW-256G-1002 256GB averaged 40.7% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPNUW-256G-1002 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 594MB/s
Avg. 4K-64Thread Read Speed 721MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPNUW-256G-1002 256GB is 101%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPNUW-256G-1002 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 329MB/s
Avg. Sequential Mixed IO Speed 685MB/s
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Average Bench

(Based on 16,774 samples)
Rank 167141%
Min Avg Max
534 Read 884 1,187
300 Write 798 1,188
335 Mixed 685 1,012
180 SusWrite 329 445
151% 674 MB/s
Min Avg Max
22.1 4K Read 43 48.5
37.2 4K Write 102 164
20.8 4K Mixed 51.1 69.8
184% 65.2 MB/s
Min Avg Max
397 DQ Read 721 858
202 DQ Write 584 973
247 DQ Mixed 594 734
461% 633 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
92GB free (System drive)
Firmware: 20110000
SusWrite @10s intervals: 585 423 426 432 411 343 MB/s
164% Outstanding
Read 833
Write 1,069
Mixed 641
SusWrite 437
168% 745 MB/s
4K Read 43.2
4K Write 124
4K Mixed 61.5
210% 76.3 MB/s
DQ Read 855
DQ Write 891
DQ Mixed 724
586% 823 MB/s
91GB free (System drive)
Firmware: 20110000
SusWrite @10s intervals: 621 431 432 432 434 409 MB/s
159% Outstanding
Read 1,179
Write 1160
Mixed 757
SusWrite 460
199% 889 MB/s
4K Read 32.3
4K Write 122
4K Mixed 45.6
172% 66.7 MB/s
DQ Read 469
DQ Write 945
DQ Mixed 731
549% 715 MB/s
86GB free (System drive)
Firmware: 20110000
SusWrite @10s intervals: 279 285 227 213 216 210 MB/s
148% Outstanding
Read 1071
Write 1132
Mixed 967
SusWrite 238
191% 852 MB/s
4K Read 39
4K Write 100
4K Mixed 51.4
178% 63.5 MB/s
DQ Read 845
DQ Write 769
DQ Mixed 702
555% 772 MB/s
55GB free (System drive)
Firmware: 20110000
SusWrite @10s intervals: 424 176 179 170 169 172 MB/s
127% Outstanding
Read 771
Write 923
Mixed 788
SusWrite 215
152% 674 MB/s
4K Read 36.6
4K Write 82.8
4K Mixed 49.8
163% 56.4 MB/s
DQ Read 812
DQ Write 617
DQ Mixed 683
519% 704 MB/s
38GB free (System drive)
Firmware: 20110000
SusWrite @10s intervals: 241 234 215 214 197 204 MB/s
59.8% Above average
Read 437
Write 414
Mixed 322
SusWrite 218
78% 348 MB/s
4K Read 8.3
4K Write 30.3
4K Mixed 21.2
56% 19.9 MB/s
DQ Read 298
DQ Write 197
DQ Mixed 193
159% 229 MB/s
16,774 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,712,921 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-1002 256GB Builds (Compare 3,343 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 9%
Tree trunk
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 8%
Tree trunk

System: Asus ROG Strix G531GT_G531GT

CPU
Core i7-9750HIntelBench 73%, 328,182 samples2,023x
Core i5-9300HIntelBench 65%, 116,682 samples764x
Core i5-9300HIntelBench 68%, 23,588 samples556x
GPU
UHD Graphics 630IntelBench 5%, 506,702 samples1,774x
GTX 1650 (Mobile)NvidiaBench 41%, 92,838 samples1,569x
SSD
PC SN520 SDAPNUW-256G-1002 256GBWDCBench 141%, 16,774 samples445x
RAM
HMA81GS6JJR8N-VK 1x8GBHynixBench 40%, 48,644 samples575x
M471A2K43DB1-CTD 1x16GBSamsungBench 42%, 21,753 samples364x
M471A1K43DB1-CTD 1x8GBSamsungBench 40%, 54,121 samples323x
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Popular PC SN520 SDAPNUW-256G-1002 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.

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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
  • - 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) April 2024 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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 Frequently Asked Questions

Storage Devices FAQ
What is sustained sequential write speed?
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What is 3D XPoint and how fast is it?
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What is sequential read speed?
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ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $177Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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