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Samsung PM991 MZ9LQ256HBJQ

PM991 MZ9LQ256HBJQ

The Samsung PM991 MZ9LQ256HBJQ is a mid range PCIe M.2 2230 NVMe SSD. It was first found in the Microsoft Surface Pro 7+ and is user replaceable.

TypeSSD
SizeM.2 2230
Capacity256 GB
InterfaceM.2
Announced23.06.2020

Benchmarks

Performance Rating - DiskSpd
14 pt (16%)
Seagate ST1000LM014 Solid State Hybrid Drive
0.687 -95%
...
SK Hynix BC711 HFM128GD3HX015N
13 -7%
Micron 2200S 256GB
13.1 -6%
ADATA Swordfish 2 TB
13.4 -4%
Kingston NV2 1000GB SNV2S/1000G
13.5 -4%
Micron 2200S 512GB
13.6 -3%
SK Hynix BC711 1TB HFM001TD3JX016N
13.6 -3%
Micron 3460 256 GB Soldered
13.7 -2%
SK hynix BC511 HFM256GDJTNI-82A0
13.8 -1%
Micron 2400 MTFDKBA512QF
13.8 -1%
Samsung PM991 MZ9LQ256HBJQ
14
WDC PC SN520 SDAPNUW-256G
14.2 1%
Toshiba BG4 KBG40ZNT512G
14.3 2%
Apple SSD AP1024
14.5 4%
SSSTC CA5-8D256
14.6 4%
Toshiba KBG30ZMV512G
14.7 5%
Toshiba XG5-P KXG50PNV2T04
14.7 5%
WDC PC SN530 SDBPMPZ-265G
14.7 5%
Transcend M.2 SSD 430S TS512GMTS430S
14.8 6%
GSemi AZW GSDFN512TS3F1OGCX
14.9 6%
...
Kingston Fury Renegade G5 8TB
88.2 530%
0%
100%
Restrict / Search: Model: Max. age: years
AS SSD - Copy Game
min: 562     avg: 687     median: 686.5 (11%)     max: 811 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Copy Program
min: 262.8     avg: 388.9     median: 388.9 (14%)     max: 515 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Copy ISO
min: 996     avg: 1085     median: 1085 (4%)     max: 1174 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Total
min: 2155     avg: 2386     median: 2385.5 (15%)     max: 2616 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Write
min: 858     avg: 925     median: 925 (13%)     max: 992 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Read
min: 885     avg: 989     median: 989 (16%)     max: 1093 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Write *
min: 0.028     avg: 0     median: 0 (0%)     max: 0.035 ms
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Read *
min: 0.179     avg: 0.2     median: 0.2 (1%)     max: 0.279 ms
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Write
min: 680     avg: 721     median: 721 (12%)     max: 762 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Read
min: 676     avg: 773     median: 773 (15%)     max: 870 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Write
min: 110.3     avg: 123.6     median: 123.6 (24%)     max: 136.9 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Read
min: 40.1     avg: 45.1     median: 45.1 (14%)     max: 50.1 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Write
min: 675     avg: 803     median: 803 (7%)     max: 931 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Read
min: 1687     avg: 1706     median: 1706 (13%)     max: 1725 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
min: 78.8     avg: 122.1     median: 122.1 (11%)     max: 165.3 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
min: 27.88     avg: 35.4     median: 35.4 (1%)     max: 42.95 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
min: 742     avg: 849     median: 848.5 (5%)     max: 955 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
min: 841     avg: 854     median: 854 (10%)     max: 867 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
min: 363.5     avg: 393.5     median: 393.5 (8%)     max: 423.5 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
min: 317.6     avg: 398.4     median: 398.4 (6%)     max: 479.2 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
min: 1057     avg: 1059     median: 1058.5 (7%)     max: 1060 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
min: 2251     avg: 2254     median: 2253.5 (12%)     max: 2256 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_write
min: 106     avg: 136.5     median: 136.5 (31%)     max: 167 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_read
min: 40.4     avg: 43.8     median: 43.8 (13%)     max: 47.1 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_write
min: 278     avg: 371     median: 371 (6%)     max: 464 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_read
min: 583     avg: 585     median: 584.5 (7%)     max: 586 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_write
min: 855     avg: 901     median: 901 (9%)     max: 947 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_read
min: 890     avg: 898     median: 897.5 (11%)     max: 905 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_write
min: 1002     avg: 1039     median: 1039 (7%)     max: 1076 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_read
min: 1989     avg: 2068     median: 2068 (13%)     max: 2147 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd Loop seq_q8t1_read
min: 2184     avg: 2188     median: 2188 (13%)     max: 2192 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
- Range of benchmark values
red legend - Average benchmark values
* Smaller numbers mean a higher performance

Amazon Logo
  • $87.98
    MZVLB512HBJQ-000D7 Samsung 512GB PM981a SED Encryption M2 M.2 2280 PCIe SSD (New with Warranty), MZ-VLB512C 0WD87X WD87X, PM981 Phoenix Controller, Compatible with Dell HP Acer Asus Lenovo
  • $299.95
    Samsung PM9A1 MZ-VL21T100 1TB PCIe 4.0 NVMe 2280 Solid State Drive, 7000MB/s Read, 5200MB/s Write, 1000K IOPS Ran. Read, 850K IOPS Ran. Write - PM9A1
  • $104.39
    CoreCentric Remanufactured Dishwasher Electronic Control Board Replacement for Samsung DE92-02256A
  • $86.73
    For Samsung L97213-001 MZVLB256HBHQ h p PM981A NVMe SSD Solid State Drive
  • $132.84
    Samsung DE92-02256C Dishwasher Control Board

Add one or more devices and compare

In the following list you can select (and also search for) devices that should be added to the comparison. You can select more than one device.

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v1.35
log 23. 20:27:10

#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 Thu, 19 Mar 2026 04:00:04 +0100 +0.004s ... 0.004s

#4 composed specs +0.005s ... 0.01s

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

#6 getting avg benchmarks for device 3633 +0.05s ... 0.06s

#7 got single benchmarks 3633 +0.007s ... 0.066s

#8 got avg benchmarks for devices +0s ... 0.066s

#9 min, max, avg, median took s +4.16s ... 4.227s

#10 return log +0.545s ... 4.772s

Notebook reviews with Samsung PM991 MZ9LQ256HBJQ

Microsoft Surface Laptop 4 13 Review: Is AMD's Ryzen held back on purpose?

Microsoft Surface Laptop 4 13 Review: Is AMD's Ryzen held back on purpose?

The smaller 13.5-inch model of the Surface Laptop 4 is now also available with an AMD Ryzen processor. Private customers, however, only get the base model with the Ryzen 5 and just 8 GB RAM. But is the AMD model perhaps still the better option?
AMD Ryzen 5 4680U, Vega 7, 13.5", 1.3 kg
Microsoft Surface Pro 7 Plus in review: Tiger Lake provides a performance boost

Microsoft Surface Pro 7 Plus in review: Tiger Lake provides a performance boost

LTE modem, Tiger Lake, replaceable SSD - Microsoft adds new features to the Surface Pro 7 and names the whole package Surface Pro 7 Plus. Consumers can't buy the device (yet). The sales group is limited to companies and schools for the time being.
Intel Core i5-1135G7, Iris Xe G7 80EUs, 12.3", 796 g

Microsoft Surface Laptop 4 13 Ryzen 5: AMD Ryzen 5 4680U AMD Radeon RX Vega 7, 13.50", 1.3 kg
  External Review » Microsoft Surface Laptop 4 13 Ryzen 5

Microsoft Surface Pro 7 Plus: Intel Core i5-1135G7 Intel Iris Xe Graphics G7 80EUs, 12.30", 0.8 kg
  External Review » Microsoft Surface Pro 7 Plus

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Klaus Hinum (Update: 2021-03-17)