Average Bench: 146% (119th of 1016)

Based on 2,017 user benchmarks.  Model: WDC PC SN520 SDAPMUW-256G-1101

Outstanding average bench

The WDC PC SN520 SDAPMUW-256G-1101 256GB averaged 45.9% 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 616MB/s
Avg. 4K-64Thread Write Speed 631MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-256G-1101 256GB is 69.7%. 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 403MB/s
Avg. 4K Random Read Speed 36.4MB/s
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Average Bench

(Based on 2,017 samples)
Min Avg Max
611 Read 905 1,192
563 Write 857 1,158
475 Mixed 750 1,001
295 SusWrite 403 445
163% 729 MB/s
Min Avg Max
20.7 4K Read 36.4 46.9
56.9 4K Write 111 155
25.1 4K Mixed 50.6 67.6
179% 66 MB/s
Min Avg Max
286 DQ Read 716 858
235 DQ Write 631 948
295 DQ Mixed 616 733
478% 655 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
197GB free (System drive)
Firmware: 20110001
SusWrite @10s intervals: 467 421 427 425 427 425 MB/s
Read 1,072
Write 999
Mixed 901
SusWrite 432
191% 851 MB/s
4K Read 44.8
4K Write 134
4K Mixed 66.5
224% 81.8 MB/s
DQ Read 844
DQ Write 738
DQ Mixed 688
544% 756 MB/s
171GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 383 306 295 362 327 329 MB/s
Read 786
Write 726
Mixed 646
SusWrite 334
140% 623 MB/s
4K Read 47.4
4K Write 162
4K Mixed 70.4
248% 93.4 MB/s
DQ Read 860
DQ Write 832
DQ Mixed 732
581% 808 MB/s
170GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 496 419 419 417 420 421 MB/s
Read 761
Write 765
Mixed 655
SusWrite 432
147% 653 MB/s
4K Read 35.8
4K Write 120
4K Mixed 59.8
194% 71.7 MB/s
DQ Read 790
DQ Write 855
DQ Mixed 724
572% 790 MB/s
136GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 344 275 350 287 279 276 MB/s
Read 793
Write 759
Mixed 627
SusWrite 302
139% 620 MB/s
4K Read 32.7
4K Write 130
4K Mixed 62.3
198% 74.9 MB/s
DQ Read 829
DQ Write 929
DQ Mixed 725
588% 828 MB/s
50GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 431 464 380 359 353 351 MB/s
Read 840
Write 824
Mixed 750
SusWrite 390
157% 701 MB/s
4K Read 38.2
4K Write 88.1
4K Mixed 52.3
172% 59.5 MB/s
DQ Read 781
DQ Write 522
DQ Mixed 613
468% 639 MB/s
127GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 412 385 339 340 327 316 MB/s
Read 729
Write 421
Mixed 441
SusWrite 353
108% 486 MB/s
4K Read 24.4
4K Write 86.5
4K Mixed 35.4
128% 48.8 MB/s
DQ Read 450
DQ Write 384
DQ Mixed 386
298% 407 MB/s
2,017 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,397,007 SSDs tested.

EDIT WITH CUSTOM PC BUILDER

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

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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.
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Solid State Drive Rankings (Price vs Performance) January 2020 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

1016 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

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