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WDC

PC SN520 SDAPNUW-256G-1102 256GB

▲ 500 ▼

Release date ≈ Q3 2019.

Average Bench: 128% (187th of 1080)

Based on 1,103 user benchmarks.  Model: WDC PC SN520 SDAPNUW-256G-1102
Poor: 75%Average: 128% Great: 169%

Popular builds with this SSD

Outstanding average bench

The WDC PC SN520 SDAPNUW-256G-1102 256GB averaged 28.2% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPNUW-256G-1102 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 528MB/s
Avg. 4K-64Thread Read Speed 626MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPNUW-256G-1102 256GB is 94.5%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPNUW-256G-1102 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 319MB/s
Avg. 4K Random Write Speed 90.2MB/s

Average Bench

(Based on 1,103 samples)
Rank 187128%
Min Avg Max
331 Read 886 1,201
271 Write 822 1,163
297 Mixed 679 1,037
188 SusWrite 319 440
151% 676 MB/s
Min Avg Max
19 4K Read 33.7 44.1
39.8 4K Write 90.2 135
24 4K Mixed 46.7 63.8
159% 56.9 MB/s
Min Avg Max
270 DQ Read 626 852
140 DQ Write 461 794
201 DQ Mixed 528 727
399% 538 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
52GB free (System drive)
Firmware: 20180000
SusWrite @10s intervals: 503 414 384 322 329 364 MB/s
151% Outstanding
Read 986
Write 819
Mixed 763
SusWrite 386
165% 738 MB/s
4K Read 41
4K Write 107
4K Mixed 52.8
186% 66.9 MB/s
DQ Read 839
DQ Write 530
DQ Mixed 682
509% 684 MB/s
98GB free (System drive)
Firmware: 20180000
SusWrite @10s intervals: 347 322 261 255 247 242 MB/s
115% Outstanding
Read 939
Write 872
Mixed 629
SusWrite 279
152% 680 MB/s
4K Read 25.3
4K Write 69.4
4K Mixed 41.6
128% 45.4 MB/s
DQ Read 549
DQ Write 344
DQ Mixed 456
338% 450 MB/s
57GB free (System drive)
Firmware: 20180000
SusWrite @10s intervals: 174 178 163 156 157 205 MB/s
98.4% Outstanding
Read 817
Write 136
Mixed 351
SusWrite 172
80% 369 MB/s
4K Read 24.4
4K Write 77.3
4K Mixed 37.2
126% 46.3 MB/s
DQ Read 460
DQ Write 264
DQ Mixed 356
266% 360 MB/s
190GB free (System drive)
Firmware: 20180000
SusWrite @10s intervals: 391 386 400 374 331 309 MB/s
88.3% Excellent
Read 870
Write 607
Mixed 860
SusWrite 365
151% 676 MB/s
4K Read 25.8
4K Write 38.2
4K Mixed 22.8
88% 28.9 MB/s
DQ Read 98
DQ Write 89.8
DQ Mixed 182
113% 123 MB/s
32GB free (System drive)
Firmware: 20180000
SusWrite @10s intervals: 175 85 125 90 87 96 MB/s
59.8% Above average
Read 734
Write 395
Mixed 541
SusWrite 110
99% 445 MB/s
4K Read 21.8
4K Write 16.6
4K Mixed 16.9
64% 18.4 MB/s
DQ Read 150
DQ Write 42.5
DQ Mixed 66.8
57% 86.4 MB/s
111GB free (System drive)
Firmware: 20180000
SusWrite @10s intervals: 285 296 274 287 336 372 MB/s
53.6% Above average
Read 342
Write 206
Mixed 258
SusWrite 308
63% 279 MB/s
4K Read 9.6
4K Write 25.6
4K Mixed 10.9
42% 15.4 MB/s
DQ Read 265
DQ Write 107
DQ Mixed 126
109% 166 MB/s
1,103 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 77,535,248 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-1102 256GB Builds (Compare 156 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 10%
Tree trunk
Desktop
Desktop 54%
Yacht
Workstation
Workstation 10%
Tree trunk

System: Asus VivoBook_ASUSLaptop X412DA_X412DA

CPU
Ryzen 5 3500UAMDBench 48%, 78,189 samples130x
Ryzen 3 3200UAMDBench 41%, 21,522 samples16x
Ryzen 7 3700UAMDBench 49%, 23,686 samples10x
GPU
Radeon Vega 8 GraphicsAMDBench 10%, 115,953 samples130x
Radeon Vega 3 GraphicsAMDBench 5%, 27,821 samples16x
Radeon RX Vega 10 GraphicsAMDBench 10%, 37,264 samples10x
SSD
PC SN520 SDAPNUW-256G-1102 256GBWDCBench 128%, 1,103 samples1x
RAM
HMA851S6AFR6N-UH HMA851S6JJR6N-VK 8GBHynixBench 50%, 620 samples61x
HMA851S6AFR6N-UH Samsung M471A5244CB0-CRC 8GBHynixBench 56%, 4,116 samples28x
HMA851S6AFR6N-UH 1x4GBHynixBench 32%, 32,443 samples9x
EDIT WITH CUSTOM PC BUILDER

Popular PC SN520 SDAPNUW-256G-1102 256GB systems:

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Speed Comparisons

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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
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The Best
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Intel Core i5-12600K $159Nvidia RTX 4060 $295WD Black SN850X M.2 2TB $135
Intel Core i5-13600K $210Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $84
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $370
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