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WDC

PC SN520 SDAPNUW-256G-1032 256GB

▲ 501 ▼

Release date ≈ Q1 2019.

Average Bench: 150% (164th of 1080)

Based on 2,948 user benchmarks.  Model: WDC PC SN520 SDAPNUW-256G-1032
Poor: 103%Average: 150% Great: 181%

Popular builds with this SSD

Outstanding average bench

The WDC PC SN520 SDAPNUW-256G-1032 256GB averaged 49.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPNUW-256G-1032 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 644MB/s
Avg. 4K-64Thread Write Speed 702MB/s

Very poor consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPNUW-256G-1032 256GB is 77.2%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPNUW-256G-1032 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 332MB/s
Avg. Sequential Mixed IO Speed 690MB/s

Average Bench

(Based on 2,948 samples)
Rank 164150%
Min Avg Max
605 Read 914 1,186
259 Write 797 1,158
360 Mixed 690 985
175 SusWrite 332 444
153% 683 MB/s
Min Avg Max
21.2 4K Read 41.5 47.1
57.7 4K Write 115 156
26.3 4K Mixed 55.1 68.6
195% 70.6 MB/s
Min Avg Max
421 DQ Read 775 860
292 DQ Write 702 1,037
280 DQ Mixed 644 734
509% 707 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
81GB free (System drive)
Firmware: 20140000
SusWrite @10s intervals: 310 324 238 236 234 222 MB/s
184% Outstanding
Read 1,189
Write 1,158
Mixed 1,001
SusWrite 261
202% 902 MB/s
4K Read 48.7
4K Write 168
4K Mixed 71.9
255% 96.1 MB/s
DQ Read 856
DQ Write 1,033
DQ Mixed 728
609% 872 MB/s
119GB free (System drive)
Firmware: 20140000
SusWrite @10s intervals: 339 282 336 261 245 273 MB/s
143% Outstanding
Read 1,164
Write 1,118
Mixed 948
SusWrite 289
197% 880 MB/s
4K Read 37.3
4K Write 87.9
4K Mixed 48.8
166% 58 MB/s
DQ Read 747
DQ Write 499
DQ Mixed 726
514% 658 MB/s
149GB free (System drive)
Firmware: 20140000
SusWrite @10s intervals: 520 415 422 419 424 422 MB/s
137% Outstanding
Read 639
Write 599
Mixed 573
SusWrite 437
126% 562 MB/s
4K Read 36.8
4K Write 85.8
4K Mixed 50.1
165% 57.6 MB/s
DQ Read 812
DQ Write 704
DQ Mixed 699
540% 738 MB/s
76GB free (System drive)
Firmware: 20140000
SusWrite @10s intervals: 294 313 94 137 132 66 MB/s
136% Outstanding
Read 1,120
Write 1,006
Mixed 926
SusWrite 173
180% 806 MB/s
4K Read 38
4K Write 87.1
4K Mixed 51.4
170% 58.8 MB/s
DQ Read 737
DQ Write 526
DQ Mixed 620
466% 628 MB/s
69GB free (System drive)
Firmware: 20140000
SusWrite @10s intervals: 284 367 370 367 341 333 MB/s
115% Outstanding
Read 688
Write 426
Mixed 433
SusWrite 344
105% 473 MB/s
4K Read 29.7
4K Write 97.2
4K Mixed 43.2
152% 56.7 MB/s
DQ Read 448
DQ Write 432
DQ Mixed 358
291% 412 MB/s
104GB free (System drive)
Firmware: 20140000
SusWrite @10s intervals: 427 211 192 201 201 198 MB/s
106% Outstanding
Read 681
Write 640
Mixed 634
SusWrite 238
123% 548 MB/s
4K Read 33.6
4K Write 65.1
4K Mixed 44.1
142% 47.6 MB/s
DQ Read 522
DQ Write 390
DQ Mixed 489
356% 467 MB/s
131GB free (System drive)
Firmware: 20140000
SusWrite @10s intervals: 266 245 224 229 246 225 MB/s
65.3% Good
Read 448
Write 441
Mixed 437
SusWrite 239
88% 391 MB/s
4K Read 16.2
4K Write 24
4K Mixed 19.2
62% 19.8 MB/s
DQ Read 355
DQ Write 254
DQ Mixed 306
228% 305 MB/s
2,948 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-1032 256GB Builds (Compare 2,053 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 9%
Tree trunk
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 8%
Tree trunk

Motherboard: MSI MS-16R3

CPU
Core i7-9750HIntelBench 73%, 328,182 samples966x
Core i5-9300HIntelBench 65%, 116,682 samples836x
Core i5-9300HIntelBench 68%, 23,588 samples116x
GPU
UHD Graphics 630IntelBench 5%, 506,702 samples1,243x
GTX 1650 (Mobile Max-Q)NvidiaBench 36%, 6,904 samples530x
GeForce GTX 1050 TiNvidiaBench 28%, 807 samples152x
SSD
PC SN520 SDAPNUW-256G-1032 256GBWDCBench 150%, 2,948 samples1x
RAM
M471A1K43CB1-CTD 1x8GBSamsungBench 40%, 96,646 samples337x
M471A1K43CB1-CTD 2x8GBSamsungBench 76%, 108,106 samples196x
HMA81GS6CJR8N-VK 1x8GBHynixBench 40%, 73,050 samples191x
EDIT WITH CUSTOM PC BUILDER

Popular PC SN520 SDAPNUW-256G-1032 256GB compatible motherboards:

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Speed Comparisons

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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?
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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
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