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Samsung PM991 MZALQ128HBHQ-000L2

MZALQ128HBHQ

The 128 GB Samsung SSD PM991 MZALQ128HBHQ is a very compact (M.2 22x42 mm) solid state drive, a good fit for tablets and SBCs because of the size.

We found the NVMe class drive's performance to be decent in our independent testing conducted in 2020.

Notebookcheck says:

... The drive had about 89 GB of space spare upon first booting the system, with the rest taken up by Windows 10. The drive achieved good transfer speeds during our tests - Lenovo IdeaPad S145-15API Laptop Review, 2020

TypeSSD
SizeM.2 2242
Capacity128 GB
InterfaceNVMe
Announced08.01.2020

Benchmarks

AS SSD - Copy Game
389.1 MB/s (7%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Copy Program
185.9 MB/s (7%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Copy ISO
569 MB/s (5%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Score Total
1131 Points (8%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Score Write
389 Points (5%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Score Read
511 Points (11%)
+ 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
199.3 MB/s (3%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Read
294.3 MB/s (8%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Write
96.5 MB/s (19%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Read
37.1 MB/s (12%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Write
937 MB/s (8%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Read
1794 MB/s (14%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K QD32 Write
132.1 MB/s (13%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K QD32 Read
272.3 MB/s (21%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K Write
100.3 MB/s (3%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K Read
37.1 MB/s (1%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 512K Write
158.7 MB/s (3%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 512K Read
1105 MB/s (32%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - Sequential Write
233.8 MB/s (4%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - Sequential Read
1402 MB/s (27%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
128.2 MB/s (12%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
48.2 MB/s (1%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
953 MB/s (5%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
1547 MB/s (19%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
238.9 MB/s (8%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
319.8 MB/s (5%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
972 MB/s (6%)
+ 1 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
2190 MB/s (12%)
+ 1 benchmarks and specifications   + Show comparison chart
- Range of benchmark values
red legend - Average benchmark values
* Smaller numbers mean a higher performance

Add one or more devices and compare

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search for model:
v1.33
log 18. 00:34:52

#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 Mon, 16 Jun 2025 20:14:04 +0200 +0.001s ... 0.001s

#4 composed specs +0.007s ... 0.008s

#5 did output specs +0s ... 0.008s

#6 getting avg benchmarks for device 3431 +0.002s ... 0.01s

#7 got single benchmarks 3431 +0.007s ... 0.017s

#8 got avg benchmarks for devices +0s ... 0.017s

#9 min, max, avg, median took s +1.087s ... 1.104s

#10 return log +0.001s ... 1.106s

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Klaus Hinum (Update: 2020-03-21)