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WD PC SN740 256GB SDDPNQD-256G

SN740 SDDPNQD-256G

The Western Digital WD PC SN740 256 GB (WDSN740-SDDPNQD-256G-1004) is a mid-range M.2 2280 NVMe SSD. The SSDPNQD variant supports TCG Pyrite 2.01 security (in contrast to the SDDQNQD that supports TCG Opal SSC 2.01). The SSD is specified at 4000 MB/s read and 2000 MB/s write.

TypeSSD
SizeM.2 2280
Capacity256 GB
InterfaceNVMe
Announced02.03.2023

Benchmarks

Performance Rating - DiskSpd
27.5 pt (31%)
Seagate ST1000LM014 Solid State Hybrid Drive
0.687 -98%
...
ESR512GTLG-E6GBTNB4
26.8 -3%
Western Digital PC SN5000S SDEQNSJ-512G-1002
26.8 -3%
Micron 2450 512GB MTFDKBA512TFK
26.8 -3%
Samsung PM9C1b MZVL81T0HFLB-00BH1
26.8 -3%
Seagate FireCuda 520 SSD ZP1000GM30002
26.9 -2%
SK Hynix HFM001TD3HX015N
27 -2%
ESR01TBTLCG-EAC-4
27.2 -1%
Samsung SSD 980 1TB MZ-V8V1T0BW
27.3 -1%
Samsung PM9B1 1024GB MZVL41T0HBLB
27.4 0%
WD PC SN740 256GB SDDPNQD-256G
27.5
Kioxia XG8 KXG80ZNV512G
27.7 1%
Lenovo UMIS AM630 RPJTJ256MGE1QDY
27.7 1%
WD PC SN740 512GB SDDPNQD-512G
27.7 1%
Intel SSD 670p SSDPEKNU010TZ
27.7 1%
Kioxia XG7 KXG7AZNV512G
27.7 1%
Kioxia BG6 KBG60ZNS1T02
27.7 1%
Kingston OM8TAP41024K1-A00
27.7 1%
Western Digital PC SN5000S SDEPNSJ-1T00-1006
27.8 1%
SK Hynix BC711 HFM512GD3JX016N
27.8 1%
...
Kingston Fury Renegade G5 8TB
88.2 221%
0%
100%
Restrict / Search: Model: Max. age: years
AS SSD - Copy Game
min: 204.06     avg: 744     median: 743.7 (12%)     max: 1283.35 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Copy Program
min: 349.23     avg: 482     median: 482 (18%)     max: 614.77 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Copy ISO
min: 1181.38     avg: 1240     median: 1240.2 (5%)     max: 1299.06 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Total
min: 1534     avg: 2619     median: 2619 (16%)     max: 3704 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Write
min: 341     avg: 1091     median: 1091 (15%)     max: 1841 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Read
min: 832     avg: 1048     median: 1047.5 (17%)     max: 1263 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Write *
min: 0.019     avg: 0     median: 0 (0%)     max: 0.036 ms
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Read *
min: 0.103     avg: 0.2     median: 0.2 (1%)     max: 0.244 ms
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Write
min: 93.05     avg: 778     median: 778.3 (13%)     max: 1463.63 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Read
min: 531.82     avg: 711     median: 710.8 (14%)     max: 889.77 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Write
min: 96.41     avg: 155.9     median: 155.9 (30%)     max: 215.44 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Read
min: 19.2     avg: 46.7     median: 46.7 (15%)     max: 74.26 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Write
min: 1512.15     avg: 1565     median: 1564.9 (14%)     max: 1617.55 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Read
min: 2811.91     avg: 2899     median: 2899.4 (23%)     max: 2986.81 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
243.9 MB/s (22%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
83 MB/s (2%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
1707 MB/s (9%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
2914 MB/s (33%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
808 MB/s (17%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
832 MB/s (12%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
1788 MB/s (12%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
4023 MB/s (22%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_write
min: 221     avg: 233.5     median: 233.5 (54%)     max: 246 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_read
min: 74.3     avg: 76.2     median: 76.2 (22%)     max: 78.1 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_write
min: 1392     avg: 1612     median: 1612 (24%)     max: 1832 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_read
min: 1000     avg: 1002     median: 1002 (12%)     max: 1004 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_write
min: 1633     avg: 1676     median: 1675.5 (16%)     max: 1718 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_read
min: 1639     avg: 2329     median: 2329 (27%)     max: 3019 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_write
min: 1821     avg: 1853     median: 1852.5 (13%)     max: 1884 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_read
min: 3945     avg: 3994     median: 3993.5 (25%)     max: 4042 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd Loop seq_q8t1_read
min: 3951     avg: 3997     median: 3997 (25%)     max: 4043 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
01002003004005006007008009001000110012001300140015001600170018001900200021002200230024002500260027002800290030003100320033003400350036003700380039004000Tooltip
- Range of benchmark values
red legend - Average benchmark values
* Smaller numbers mean a higher performance

Amazon Logo
  • $55.99
    OEM Western Digital PC SN740 256GB M.2 PCI-e GEN 4X4 NVME SSD Internal Solid State Drive 80mm 2280 Form Factor M Key
  • $55.88
    TAC Trading OEM 256G SSD, Western Digital Black SN740, OEM WD 256GB, M.2 PCI-e Gen 4x4 NVME SSD, Internal Solid State Drive, 2280 M Key, Compatible with PS5,ThinkPad Business Laptop Desktop
  • $149.00
    WD_PC Black 512GB SN740 M.2 2230 PCIe Gen 4.0 NVMe SSD for Handheld Gaming Devices, up to 5000MB/s, Compatible with Steam Deck, Surface Pro Laptop, ROG Ally, MSI Claw, Legion Go Upgrade, 3D TLC (OEM)
  • $105.95
    ist computers Dell Latitude 5000 WD SN740 Black 512GB M.2 2242 42mm PCIe Gen 4 x4 TLC PC NVME SSD

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v1.35
log 01. 20:57:03

#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 Fri, 27 Feb 2026 01:44:18 +0100 +0.002s ... 0.002s

#4 composed specs +0.005s ... 0.007s

#5 did output specs +0s ... 0.007s

#6 getting avg benchmarks for device 3969 +0.024s ... 0.031s

#7 got single benchmarks 3969 +0.006s ... 0.037s

#8 got avg benchmarks for devices +0s ... 0.037s

#9 min, max, avg, median took s +4.941s ... 4.978s

#10 return log +0.327s ... 5.305s

Notebook reviews with WD PC SN740 256GB SDDPNQD-256G

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Samsung Galaxy Book3 Pro 16 review: Office laptop with Core-i5 power and a long battery life

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Samsung Galaxy Book3 Pro 360 16-inch Convertible review: newest display generation meets revamped processor

The Samsung Galaxy Book3 Pro 360 actually beats our measurement hardware with its lighting-fast display. The same cannot be said for the Intel Core i5-1340P. This is the Raptor Lake processor's debut at Notebookcheck and it hast left us ... unimpressed.
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Samsung Galaxy Book3 Pro 16: Intel Core i5-1340P Intel Iris Xe Graphics G7 80EUs, 16.00", 1.6 kg
  External Review » Samsung Galaxy Book3 Pro 16, Core i5-1340P

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  External Review » Samsung Galaxy Book3 Pro 360 16, i5-1340P

Samsung Galaxy Book3 Pro 16: Intel Core i5-1340P Intel Iris Xe Graphics G7 80EUs, 16.00", 1.6 kg
   » Samsung Galaxy Book3 Pro 16: 16-inch laptop with a long battery life and meager storage equipment

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Klaus Hinum (Update: 2023-03-23)