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WDC PC SN520 SDAPMUW-256G

SN520 SDAPMUW-256G

The Western Digital PC SN520 NVMe SSD 256GB (M.2 2242, SDAPMUW-256G) is a small mid range SSD. It is specified at 1700 / 1300 MB/s sequential read / write and 220k / 175k IOPS 4k. The SSD uses 3D-NAND TLC from Toshiba/WD and is rated at a TBW of 200TB / MTBF of 1.75 Mio h.

TypeSSD
SizeM.2 2242
Capacity256 GB
InterfaceNVMe

Benchmarks

Performance Rating - DiskSpd
16.6 pt (19%)
Seagate ST1000LM014 Solid State Hybrid Drive
0.709 -96%
...
Netac S930E8/256GPN
16.2 -2%
SK Hynix BC501 HFM512GDJTNG
16.2 -2%
WDC PC SN520 SDAPMUW-512
16.3 -2%
WDC PC SN530 SDBPTPZ-256G
16.3 -2%
Kingston KC2500 1 TB SKC2500M81000G
16.3 -2%
Toshiba KBG30ZMT512G
16.4 -1%
Silicon Motion AZW 256G M.2280 NVMe 4X 200725 D
16.4 -1%
Toshiba Kioxia XG6 KXG60PNV1T02
16.5 -1%
Apple SSD AP1024 7171
16.5 -1%
WDC PC SN520 SDAPMUW-256G
16.6
Kioxia BG5 KBG5AZNT256G
16.6 0%
Kingston OM3PDP3512B
16.6 0%
Netac S930E 1TB
16.6 0%
AirDisk AFF 10-512G
16.6 0%
Samsung PM991 MZALQ512HALU
16.7 1%
Kingston OM8PCP3512F-AB
16.8 1%
Kingston OM8PDP3512B-AI1
16.9 2%
WDC PC SN720 SDAPNTW-512G
16.9 2%
Kingston OM8PDP3256B
17 2%
...
Kingston Fury Renegade G5
87.4 427%
0%
100%
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AS SSD - Copy Game
546 MB/s (9%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Copy Program
253.1 MB/s (9%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Copy ISO
754 MB/s (7%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Score Total
1647 Points (10%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Score Write
659 Points (9%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Score Read
657 Points (10%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Write *
0 ms (0%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Read *
0.1 ms (0%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Write
399.6 MB/s (7%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Read
467.7 MB/s (9%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Write
138.3 MB/s (27%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Read
35.9 MB/s (11%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Write
1215 MB/s (11%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Read
1535 MB/s (12%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
173.1 MB/s (16%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
49.3 MB/s (1%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
1188 MB/s (6%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
1278 MB/s (15%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
457.4 MB/s (15%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
505 MB/s (8%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
1258 MB/s (8%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
1742 MB/s (9%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_write
181.6 MB/s (42%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_read
41.8 MB/s (12%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_write
683 MB/s (11%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_read
665 MB/s (8%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_write
1046 MB/s (10%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_read
1107 MB/s (14%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_write
888 MB/s (6%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_read
1727 MB/s (11%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd Loop seq_q8t1_read
1723 MB/s (11%)
+ 1 benchmarks and specifications   + Show comparison chart
- Range of benchmark values
red legend - Average benchmark values
* Smaller numbers mean a higher performance

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v1.33
log 31. 08:21:22

#0 ran 0s before starting gpusingle class +0s ... 0s

#1 no ids found in url (should be separated by "_") +0s ... 0s

#2 not redirecting to Ajax server +0s ... 0s

#3 did not recreate cache, as it is less than 5 days old! Created at Sat, 26 Jul 2025 20:41:40 +0200 +0.002s ... 0.002s

#4 composed specs +0.008s ... 0.01s

#5 did output specs +0s ... 0.01s

#6 getting avg benchmarks for device 3524 +0.02s ... 0.029s

#7 got single benchmarks 3524 +0.005s ... 0.035s

#8 got avg benchmarks for devices +0s ... 0.035s

#9 min, max, avg, median took s +1.098s ... 1.133s

#10 return log +0.001s ... 1.134s

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Klaus Hinum (Update: 2020-07-24)