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Nvme

PC SN520 WD 256GB

▲ 500 ▼

Release date ≈ Q1 2019.

Average Bench: 146% (160th of 1072)

Based on 529 user benchmarks.  Model: NVMe PC SN520 NVMe WD
Poor: 99%Average: 146% Great: 182%

Popular builds with this SSD

Outstanding average bench

The Nvme PC SN520 WD 256GB averaged 46.2% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Nvme PC SN520 WD 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 583MB/s
Avg. 4K-64Thread Read Speed 701MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Nvme PC SN520 WD 256GB is 83.9%. This is a particularly wide range which indicates that the Nvme PC SN520 WD 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 385MB/s
Avg. 4K Random Write Speed 107MB/s
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Average Bench

(Based on 529 samples)
Rank 160146%
Min Avg Max
631 Read 940 1,206
420 Write 925 1,215
438 Mixed 815 1,106
226 SusWrite 385 448
172% 766 MB/s
Min Avg Max
25.7 4K Read 41.3 47.4
45.8 4K Write 107 161
28.9 4K Mixed 52.5 69.3
186% 66.9 MB/s
Min Avg Max
289 DQ Read 701 858
147 DQ Write 552 958
223 DQ Mixed 583 730
448% 612 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
144GB free (System drive)
Firmware: 20240012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 518 448 418 421 423 420 MB/s
159% Outstanding
Read 947
Write 1,202
Mixed 1,075
SusWrite 441
207% 916 MB/s
4K Read 40.3
4K Write 104
4K Mixed 57.1
189% 67 MB/s
DQ Read 853
DQ Write 741
DQ Mixed 732
566% 775 MB/s
202GB free (System drive)
Firmware: 0012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 444 403 412 411 421 420 MB/s
158% Outstanding
Read 1,154
Write 1,213
Mixed 1,090
SusWrite 418
218% 969 MB/s
4K Read 41.6
4K Write 108
4K Mixed 57.5
194% 68.9 MB/s
DQ Read 722
DQ Write 470
DQ Mixed 534
415% 576 MB/s
181GB free (System drive)
Firmware: 0012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 448 412 417 359 410 414 MB/s
119% Outstanding
Read 630
Write 484
Mixed 549
SusWrite 410
116% 518 MB/s
4K Read 35.3
4K Write 94.9
4K Mixed 47.6
165% 59.3 MB/s
DQ Read 528
DQ Write 255
DQ Mixed 496
340% 426 MB/s
197GB free (System drive)
Firmware: 20240012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 464 422 428 426 431 432 MB/s
108% Outstanding
Read 780
Write 706
Mixed 806
SusWrite 434
153% 682 MB/s
4K Read 28.6
4K Write 50.4
4K Mixed 38.1
119% 39 MB/s
DQ Read 288
DQ Write 312
DQ Mixed 262
208% 287 MB/s
161GB free (System drive)
Firmware: 20220012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 316 325 344 247 219 209 MB/s
105% Outstanding
Read 676
Write 696
Mixed 672
SusWrite 276
130% 580 MB/s
4K Read 29.9
4K Write 79.5
4K Mixed 41.9
141% 50.4 MB/s
DQ Read 540
DQ Write 225
DQ Mixed 412
297% 393 MB/s
100GB free (System drive)
Firmware: 20240012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 343 314 270 251 252 251 MB/s
99.8% Outstanding
Read 712
Write 1,068
Mixed 428
SusWrite 280
140% 622 MB/s
4K Read 25.5
4K Write 56.4
4K Mixed 36.1
115% 39.3 MB/s
DQ Read 451
DQ Write 368
DQ Mixed 395
300% 405 MB/s
191GB free (System drive)
Firmware: 20240012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 314 237 337 283 135 142 MB/s
83.5% Excellent
Read 621
Write 568
Mixed 592
SusWrite 241
113% 506 MB/s
4K Read 25.5
4K Write 50.4
4K Mixed 31.9
106% 35.9 MB/s
DQ Read 345
DQ Write 140
DQ Mixed 222
170% 236 MB/s
198GB free (System drive)
Firmware: 20240012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 351 403 390 398 396 412 MB/s
80.4% Excellent
Read 454
Write 330
Mixed 417
SusWrite 391
90% 398 MB/s
4K Read 22.3
4K Write 40.2
4K Mixed 21.2
82% 27.9 MB/s
DQ Read 349
DQ Write 252
DQ Mixed 247
199% 283 MB/s
529 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,876,145 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 WD 256GB Builds (Compare 2,149 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 7%
Tree trunk
Desktop
Desktop 58%
Gunboat
Workstation
Workstation 7%
Tree trunk

System: Dell Latitude 5400

CPU
Core i5-8365UIntelBench 57%, 8,737 samples930x
Core i7-8665UIntelBench 60%, 10,156 samples706x
Core i5-8265UIntelBench 53%, 87,841 samples414x
GPU
UHD Graphics 620IntelBench 5%, 178,291 samples2,050x
UHD Graphics 620 (Mobile Kaby Lake R)IntelBench 5%, 420,154 samples90x
GTX 1660-TiNvidia  $143Bench 76%, 318,562 samples2x
SSD
PC SN520 WD 256GBNvmeBench 146%, 529 samples1x
RAM
HMA81GS6JJR8N-VK 1x8GBUnknownBench 40%, 7,726 samples197x
HMA82GS6JJR8N-VK 1x16GBUnknownBench 43%, 5,210 samples193x
HMA82GS6DJR8N-VK 1x16GBUnknownBench 42%, 1,772 samples183x
EDIT WITH CUSTOM PC BUILDER

Popular PC SN520 WD 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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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
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  • - Compare your in-game FPS to other users with your hardware
Solid State Drive Rankings (Price vs Performance) May 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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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 i5-13600K $254Nvidia RTX 4060 $293Crucial MX500 250GB $39
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $175Nvidia RTX 4070 $550Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $45SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $62G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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