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Samsung PM991 MZALQ512HALU

The 512 GB Samsung SSD PM991 or MZALQ512HALU is a PCIe 3.0 x4 based, M.2 type solid state drive. The NVMe drive's transfer rates are entry-level to mid-tier by H1 2020 standards according to CrystalDiskMark.

Notebookcheck says:

... The SSD is connected via an NVMe PCIe 3.0 x4 connection and performs great in our benchmarks - Dell XPS 15 9560 Laptop Review | March 2017

TypeSSD
SizeM.2 2280
Capacity512 GB
InterfaceNVMe
Announced08.01.2020

Benchmarks

Performance Rating - DiskSpd
20.4 pt (28%)
64 GB eMMC Flash -89%
...
Samsung PM991 MZALQ256HAJD -2%
Kingston OM8PDP3256B -1%
Samsung SSD 950 Pro 512GB m.2 NVMe 0%
Kioxia BG5 KBG5AZNT256G 0%
Samsung PM991 MZALQ512HALU
Toshiba KBG40ZNS512G NVMe 3%
...
0%
100%
AS SSD - Copy Game
min: 681     avg: 924     median: 945 (16%)     max: 1148 MB/s
AS SSD - Copy Program
min: 276.2     avg: 453.2     median: 467.5 (17%)     max: 582 MB/s
AS SSD - Copy ISO
min: 982     avg: 1310     median: 1287 (12%)     max: 1543 MB/s
AS SSD - Score Total
min: 2286     avg: 2643     median: 2691 (29%)     max: 2787 Points
AS SSD - Score Write
min: 708     avg: 1027     median: 1069.5 (19%)     max: 1144 Points
AS SSD - Score Read
min: 1063     avg: 1091     median: 1098 (30%)     max: 1117 Points
AS SSD - Access Time Write *
min: 0.02     avg: 0     median: 0 (0%)     max: 0.078 ms
AS SSD - Access Time Read *
min: 0.065     avg: 0.1     median: 0.1 (0%)     max: 0.126 ms
AS SSD - 4K-64 Write
min: 485     avg: 780     median: 819 (16%)     max: 872 MB/s
AS SSD - 4K-64 Read
min: 830     avg: 854     median: 856.5 (29%)     max: 870 MB/s
AS SSD - 4K Write
min: 100.8     avg: 140.2     median: 132.7 (36%)     max: 189.1 MB/s
AS SSD - 4K Read
min: 32.37     avg: 45.8     median: 47.1 (15%)     max: 50.3 MB/s
AS SSD - Sequential Write
min: 802     avg: 1061     median: 1078.5 (13%)     max: 1268 MB/s
AS SSD - Sequential Read
min: 1706     avg: 1917     median: 1938.5 (19%)     max: 2012 MB/s
CrystalDiskMark 3.0 - 4K QD32 Write
525 MB/s (64%)
CrystalDiskMark 3.0 - 4K QD32 Read
386.9 MB/s (36%)
CrystalDiskMark 3.0 - 4K Write
139.2 MB/s (16%)
CrystalDiskMark 3.0 - 4K Read
52.6 MB/s (1%)
CrystalDiskMark 3.0 - 512K Write
1187 MB/s (28%)
CrystalDiskMark 3.0 - 512K Read
1076 MB/s (36%)
CrystalDiskMark 3.0 - Sequential Write
1118 MB/s (26%)
CrystalDiskMark 3.0 - Sequential Read
1622 MB/s (39%)
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
min: 102.8     avg: 129.5     median: 135.6 (12%)     max: 148.1 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
min: 37.55     avg: 45.1     median: 46 (1%)     max: 52.3 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
min: 946     avg: 1172     median: 1222 (7%)     max: 1333 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
min: 1145     avg: 1496     median: 1541 (19%)     max: 1615 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
min: 381.8     avg: 448     median: 435.1 (16%)     max: 592 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
min: 335.5     avg: 414.9     median: 383.1 (6%)     max: 528 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
min: 1315     avg: 1397     median: 1398 (14%)     max: 1456 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
min: 2085     avg: 2307     median: 2346.5 (18%)     max: 2365 MB/s
DiskSpd - DiskSpd 4k_q1t1_write
min: 67.8     avg: 122.5     median: 125.5 (30%)     max: 155 MB/s
DiskSpd - DiskSpd 4k_q1t1_read
min: 36.3     avg: 45.2     median: 44.5 (13%)     max: 55 MB/s
DiskSpd - DiskSpd 4k_q32t16_write
min: 378.5     avg: 634     median: 488.5 (11%)     max: 958 MB/s
DiskSpd - DiskSpd 4k_q32t16_read
min: 690     avg: 855     median: 931.5 (21%)     max: 957 MB/s
DiskSpd - DiskSpd seq_write
min: 1005     avg: 1155     median: 1158 (15%)     max: 1318 MB/s
DiskSpd - DiskSpd seq_read
min: 1233     avg: 1488     median: 1543 (28%)     max: 1678 MB/s
DiskSpd - DiskSpd seq_q8t1_write
min: 1264     avg: 1354     median: 1349 (13%)     max: 1423 MB/s
DiskSpd - DiskSpd seq_q8t1_read
min: 2007     avg: 2252     median: 2312.5 (18%)     max: 2365 MB/s
DiskSpd - DiskSpd Loop seq_q8t1_read
min: 1763     avg: 2135     median: 2091 (16%)     max: 2357 MB/s
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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