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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
28.6 pt (34%)
SanDisk DF4128 -88%
...
Toshiba XG5-P KXG50PNV2T04 -5%
Toshiba KBG40ZNS512G NVMe -3%
Samsung SSD 950 Pro 512GB m.2 NVMe -1%
Samsung PM991 MZALQ512HALU
Phison 512GB PA6620060U 2%
WDC PC SN520 SDAPMUW-512 3%
Crucial P1 SSD CT1000P1SSD8 5%
Intel SSDPEMKF512G8 NVMe SSD 6%
...
0%
100%
AS SSD - Copy Game
min: 681.1     avg: 924     median: 944.8 (16%)     max: 1148.34 MB/s
AS SSD - Copy Program
min: 276.17     avg: 453     median: 467.5 (17%)     max: 581.95 MB/s
AS SSD - Copy ISO
min: 981.59     avg: 1310     median: 1287 (35%)     max: 1542.7 MB/s
AS SSD - Score Total
min: 2286     avg: 2662     median: 2739 (30%)     max: 2787 Points
AS SSD - Score Write
min: 708     avg: 1044     median: 1110 (25%)     max: 1144 Points
AS SSD - Score Read
min: 1063     avg: 1093     median: 1101 (32%)     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: 485.05     avg: 791     median: 834.6 (22%)     max: 872.28 MB/s
AS SSD - 4K-64 Read
min: 830.47     avg: 854     median: 857.7 (30%)     max: 869.71 MB/s
AS SSD - 4K Write
min: 100.81     avg: 149     median: 142.3 (1%)     max: 189.14 MB/s
AS SSD - 4K Read
min: 32.37     avg: 46.6     median: 48.5 (18%)     max: 50.35 MB/s
AS SSD - Sequential Write
min: 801.91     avg: 1036     median: 947.5 (23%)     max: 1268.17 MB/s
AS SSD - Sequential Read
min: 1705.93     avg: 1922     median: 1942.6 (35%)     max: 2011.91 MB/s
CrystalDiskMark 3.0 - 4K QD32 Write
525 MB/s (69%)
CrystalDiskMark 3.0 - 4K QD32 Read
387 MB/s (41%)
CrystalDiskMark 3.0 - 4K Write
139 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 (45%)
CrystalDiskMark 3.0 - Sequential Write
1118 MB/s (26%)
CrystalDiskMark 3.0 - Sequential Read
1622 MB/s (47%)
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
min: 102.8     avg: 129     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: 52.25 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
min: 946.1     avg: 1172     median: 1222 (25%)     max: 1333 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
min: 1145     avg: 1496     median: 1540.8 (29%)     max: 1615 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
min: 381.8     avg: 448     median: 435.1 (25%)     max: 591.6 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
min: 335.5     avg: 415     median: 383.1 (24%)     max: 528.1 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
min: 1315.2     avg: 1397     median: 1398 (25%)     max: 1456 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
min: 2085     avg: 2307     median: 2346.7 (26%)     max: 2365 MB/s
DiskSpd - DiskSpd 4k_q1t1_write
min: 67.8     avg: 122     median: 125.5 (38%)     max: 155 MB/s
DiskSpd - DiskSpd 4k_q1t1_read
min: 36.3     avg: 45.2     median: 44.5 (16%)     max: 55 MB/s
DiskSpd - DiskSpd 4k_q32t16_write
min: 378.47     avg: 634     median: 488.5 (11%)     max: 958 MB/s
DiskSpd - DiskSpd 4k_q32t16_read
min: 690     avg: 855     median: 931.4 (22%)     max: 957.1 MB/s
DiskSpd - DiskSpd seq_write
min: 1004.75     avg: 1154     median: 1158 (27%)     max: 1318 MB/s
DiskSpd - DiskSpd seq_read
min: 1232.5     avg: 1488     median: 1543.2 (35%)     max: 1678 MB/s
DiskSpd - DiskSpd seq_q8t1_write
min: 1264     avg: 1353     median: 1349 (23%)     max: 1422.92 MB/s
DiskSpd - DiskSpd seq_q8t1_read
min: 2007     avg: 2252     median: 2312.7 (34%)     max: 2365 MB/s
DiskSpd - DiskSpd Loop seq_q8t1_read
min: 1763.22     avg: 2136     median: 2091.5 (31%)     max: 2357 MB/s
0100200300400500600700800900100011001200130014001500160017001800190020002100220023001393.141420.731423.761425.561426.91427.871434.171438.171440.91492.381496.581496.741536.31553.9515551573.281577.911578.331580.221602.281624.351645.781673.941689.71692.431712.181724.581738.961778.591785.11790.771809.631832.491848.221863.271864.581865.631867.891941.021973.381992.51997.132076.982355.22355.832356.152356.462357.32358.352358.351503.732017.932018.562018.562018.982018.982020.242020.452020.452021.082021.292021.292021.292022.132022.132022.762022.762022.762022.972023.182023.392023.62023.812023.812024.022024.232024.232024.452024.452024.452024.662024.662024.872024.872024.872024.872024.872025.082025.082025.082025.292025.52025.922026.132026.552026.762026.972029.492030.332031.381826.741827.3718281828.211829.251829.251829.881830.511831.971831.971833.861879.271937.671938.921959.021999.832018.672092.552124.362124.572124.782125.22125.622125.622125.622125.832125.832126.032126.032126.452126.662126.662126.662126.662126.662126.872126.872127.082127.082127.082127.082127.082127.292127.52127.712127.922127.922127.922127.922128.551464.872102.382102.592102.592102.82102.82102.82103.012103.012103.012103.222103.222103.222103.432103.432103.432103.432103.642103.642103.642103.642103.642103.652103.852103.852103.852103.852104.062104.062104.272104.272104.482104.482104.692104.72104.92104.92105.112105.122105.312105.522105.542105.772105.962105.962106.382106.382106.592106.592107.012172.922320.472321.942325.492326.122326.122326.542326.752327.172329.682330.12330.312331.352331.772332.42332.612332.822333.032333.452333.452333.662334.082334.292334.292334.292334.72334.912335.122335.122335.122335.542335.752336.172336.172336.592337.222337.422337.422337.842337.842338.892339.12339.942340.632342.872343.082343.282343.72344.122345.81999.832355.522356.992357.22357.622357.832358.042358.042358.462358.462358.462358.672359.32359.32359.512359.722359.722359.722359.722359.932360.132360.132360.342360.342360.342360.552360.552360.552360.762360.972360.972361.812361.812362.022362.022362.022362.022362.232362.232362.442362.442362.442362.652363.072363.282363.492363.72363.912364.332365.382166.852352.822356.782357.412358.252358.252358.462358.672358.882359.092359.092359.092359.092359.32359.32359.32359.512359.512359.512359.932360.132360.342360.342360.342360.552360.762360.762360.972361.182361.182361.392361.392361.392361.62361.62361.72362.022362.022362.232362.652362.652362.652362.862363.072363.282363.282363.592363.72364.542366.31Tooltip
- 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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