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WDC

PC SN520 SDAPMUW-256G-1101 256GB

▲ 500 ▼

Release date ≈ Q4 2018.

Average Bench: 146% (134th of 1040)

Based on 4,025 user benchmarks.  Model: WDC PC SN520 SDAPMUW-256G-1101
Poor: 94%Average: 146% Great: 183%

Popular builds with this SSD

Outstanding average bench

The WDC PC SN520 SDAPMUW-256G-1101 256GB averaged 46.4% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPMUW-256G-1101 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 606MB/s
Avg. 4K-64Thread Write Speed 633MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-256G-1101 256GB is 89.3%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPMUW-256G-1101 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 355MB/s
Avg. Sequential Mixed IO Speed 737MB/s
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Average Bench

(Based on 4,025 samples)
Rank 134146%
Min Avg Max
596 Read 916 1,191
390 Write 835 1,166
455 Mixed 737 997
213 SusWrite 355 443
159% 711 MB/s
Min Avg Max
18.7 4K Read 38.9 47.5
49.7 4K Write 115 163
24.5 4K Mixed 53.2 70.1
188% 69.2 MB/s
Min Avg Max
284 DQ Read 719 858
168 DQ Write 633 1,015
226 DQ Mixed 606 732
473% 653 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
199GB free (System drive)
Firmware: 20290001
SusWrite @10s intervals: 508 413 414 416 412 416 MB/s
186% Outstanding
Read 1,182
Write 1,095
Mixed 976
SusWrite 430
206% 921 MB/s
4K Read 47.8
4K Write 149
4K Mixed 69.2
240% 88.5 MB/s
DQ Read 826
DQ Write 898
DQ Mixed 717
580% 814 MB/s
127GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 353 457 403 400 327 334 MB/s
174% Outstanding
Read 1,138
Write 1,090
Mixed 740
SusWrite 379
187% 837 MB/s
4K Read 43.8
4K Write 120
4K Mixed 61.4
209% 75.2 MB/s
DQ Read 857
DQ Write 947
DQ Mixed 727
595% 843 MB/s
140GB free (System drive)
Firmware: 20110001
SusWrite @10s intervals: 537 429 429 432 432 431 MB/s
163% Outstanding
Read 746
Write 704
Mixed 673
SusWrite 448
144% 643 MB/s
4K Read 46.4
4K Write 147
4K Mixed 67.3
234% 86.9 MB/s
DQ Read 854
DQ Write 647
DQ Mixed 700
537% 734 MB/s
133GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 526 421 322 313 365 360 MB/s
162% Outstanding
Read 1,197
Write 1157
Mixed 681
SusWrite 384
191% 855 MB/s
4K Read 34.5
4K Write 119
4K Mixed 55.1
186% 69.5 MB/s
DQ Read 774
DQ Write 689
DQ Mixed 724
545% 729 MB/s
85GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 321 304 254 248 246 252 MB/s
151% Outstanding
Read 695
Write 682
Mixed 638
SusWrite 271
128% 572 MB/s
4K Read 45.1
4K Write 133
4K Mixed 64.9
222% 81.1 MB/s
DQ Read 860
DQ Write 850
DQ Mixed 729
582% 813 MB/s
107GB free (System drive)
Firmware: 20290001
SusWrite @10s intervals: 379 265 324 260 252 251 MB/s
145% Outstanding
Read 1,194
Write 1,172
Mixed 835
SusWrite 289
195% 872 MB/s
4K Read 31.5
4K Write 112
4K Mixed 55.5
178% 66.4 MB/s
DQ Read 747
DQ Write 316
DQ Mixed 496
377% 520 MB/s
140GB free (System drive)
Firmware: 20110001
SusWrite @10s intervals: 426 384 414 409 422 427 MB/s
114% Outstanding
Read 994
Write 818
Mixed 873
SusWrite 414
174% 774 MB/s
4K Read 23.8
4K Write 78.4
4K Mixed 27.7
113% 43.3 MB/s
DQ Read 394
DQ Write 290
DQ Mixed 344
257% 342 MB/s
4,025 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 38,282,042 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 SDAPMUW-256G-1101 256GB Builds (Compare 793 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 11%
Tree trunk
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 11%
Tree trunk

System: Lenovo 81W8

CPU
Core i5-1035G1IntelBench 67%, 22,115 samples317x
Core i3-1005G1IntelBench 60%, 8,082 samples282x
Core i7-1065G7IntelBench 68%, 28,875 samples107x
GPU
UHD G1IntelBench 6%, 24,617 samples598x
Iris Plus G7IntelBench 11%, 23,194 samples107x
Iris Plus G4IntelBench 8%, 5,474 samples87x
SSD
PC SN520 SDAPMUW-256G-1101 256GBWDCBench 146%, 4,025 samples202x
RAM
M471A5244CB0-CTD Micron 4ATF51264HZ-3G2J1 8GBSamsungBench 69%, 592 samples185x
M471A5244CB0-CTD M471A5244CB0-CTD 8GBSamsungBench 70%, 218 samples126x
4ATF51264HZ-3G2J1 1x4GBMicronBench 34%, 2,821 samples111x
EDIT WITH CUSTOM PC BUILDER

Popular PC SN520 SDAPMUW-256G-1101 256GB systems:

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

Welcome to our freeware 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 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.
  • - 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.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) January 2021 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.

 Comments

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Speed Comparisons

vs Crucial MX500 250GB
vs Samsung 850 Evo 120GB
vs Samsung 860 Evo 250GB
vs Samsung 850 Pro 512GB
vs Samsung 850 Evo 250GB
vs HyperX Savage 240GB
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vs Samsung 850 Evo 1TB
vs Crucial MX200 250GB

1040 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
The Best.
CPUGPUSSD
Intel Core i5-9600K $200Nvidia RTX 3060-Ti $400Crucial MX500 250GB $47
Intel Core i5-10600K $257Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i5-10400F $161Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $40
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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