Average Bench: 156% (149th of 1074)

Based on 10,396 user benchmarks.  Model: WDC PC SN520 SDAPMUW-512G-1101

Outstanding average bench

The WDC PC SN520 SDAPMUW-512G-1101 512GB averaged 55.7% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the WDC PC SN520 SDAPMUW-512G-1101 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 696MB/s
Avg. 4K-64Thread Read Speed 849MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the WDC PC SN520 SDAPMUW-512G-1101 512GB is 95.1%. This is a particularly wide range which indicates that the WDC PC SN520 SDAPMUW-512G-1101 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 544MB/s
Avg. 4K Random Write Speed 104MB/s
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Average Bench

(Based on 10,396 samples)
Min Avg Max
544 Read 858 1,218
470 Write 840 1,221
436 Mixed 731 1,054
259 SusWrite 544 767
167% 743 MB/s
Min Avg Max
18.6 4K Read 40.9 46.9
46.3 4K Write 104 154
24.3 4K Mixed 51.6 69.2
183% 65.6 MB/s
Min Avg Max
375 DQ Read 849 1,085
154 DQ Write 593 908
208 DQ Mixed 696 1,019
526% 713 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
100GB free
Firmware: 20240001
SusWrite @10s intervals: 932 747 745 748 746 744 MB/s
Read 1,168
Write 1,196
Mixed 1030
SusWrite 777
235% 1,043 MB/s
4K Read 35.2
4K Write 66
4K Mixed 45
146% 48.7 MB/s
DQ Read 552
DQ Write 329
DQ Mixed 428
322% 436 MB/s
242GB free (System drive)
Firmware: 20290001
SusWrite @10s intervals: 696 598 545 487 501 483 MB/s
Read 734
Write 710
Mixed 689
SusWrite 552
151% 671 MB/s
4K Read 38.6
4K Write 104
4K Mixed 56.3
185% 66.1 MB/s
DQ Read 874
DQ Write 648
DQ Mixed 752
565% 758 MB/s
387GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 865 719 675 636 621 621 MB/s
Read 551
Write 673
Mixed 557
SusWrite 690
140% 618 MB/s
4K Read 35.8
4K Write 81.6
4K Mixed 48.3
159% 55.2 MB/s
DQ Read 845
DQ Write 586
DQ Mixed 704
529% 712 MB/s
91GB free (System drive)
Firmware: 20290001
SusWrite @10s intervals: 587 630 560 576 532 467 MB/s
Read 698
Write 668
Mixed 620
SusWrite 558
143% 636 MB/s
4K Read 32.8
4K Write 79.9
4K Mixed 49.8
156% 54.2 MB/s
DQ Read 692
DQ Write 553
DQ Mixed 640
474% 629 MB/s
73GB free (System drive)
Firmware: 20290001
SusWrite @10s intervals: 551 300 243 221 220 222 MB/s
Read 632
Write 684
Mixed 604
SusWrite 292
124% 553 MB/s
4K Read 33.4
4K Write 73.5
4K Mixed 47.1
150% 51.3 MB/s
DQ Read 784
DQ Write 551
DQ Mixed 655
492% 663 MB/s
232GB free (System drive)
Firmware: 20210001
SusWrite @10s intervals: 735 715 552 536 490 518 MB/s
Read 681
Write 679
Mixed 644
SusWrite 591
146% 649 MB/s
4K Read 36.3
4K Write 77.5
4K Mixed 28.9
133% 47.6 MB/s
DQ Read 556
DQ Write 175
DQ Mixed 275
226% 335 MB/s
268GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 515 377 165 299 263 383 MB/s
Read 469
Write 616
Mixed 615
SusWrite 334
115% 508 MB/s
4K Read 16.1
4K Write 34
4K Mixed 21.3
70% 23.8 MB/s
DQ Read 164
DQ Write 91.3
DQ Mixed 95.1
80% 117 MB/s
246GB free (System drive)
Firmware: 20240001
SusWrite @10s intervals: 309 355 362 364 350 336 MB/s
Read 264
Write 453
Mixed 464
SusWrite 346
87% 382 MB/s
4K Read 18.6
4K Write 32.8
4K Mixed 21.6
73% 24.3 MB/s
DQ Read 190
DQ Write 28.9
DQ Mixed 228
137% 149 MB/s
10,396 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,945,109 SSDs tested

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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

1074 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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