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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
Interface
Announced08.01.2020

Benchmarks

Performance Rating - DiskSpd
33.1 pt (37%)
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: 2545     avg: 2666     median: 2643 (31%)     max: 2771 Points
AS SSD - Score Write
min: 968     avg: 1050     median: 1031 (24%)     max: 1125 Points
AS SSD - Score Read
min: 1072     avg: 1090     median: 1096 (39%)     max: 1106 Points
AS SSD - Access Time Write *
min: 0.025     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: 0.117 ms
AS SSD - 4K-64 Write
min: 735.57     avg: 810     median: 803.1 (21%)     max: 872.28 MB/s
AS SSD - 4K-64 Read
min: 830.47     avg: 852     median: 855.3 (36%)     max: 865.5 MB/s
AS SSD - 4K Write
min: 109.31     avg: 130     median: 132.5 (1%)     max: 151.74 MB/s
AS SSD - 4K Read
min: 43.66     avg: 46.7     median: 47.1 (18%)     max: 49.89 MB/s
AS SSD - Sequential Write
min: 801.91     avg: 1098     median: 1198 (29%)     max: 1268.17 MB/s
AS SSD - Sequential Read
min: 1705.93     avg: 1908     median: 1934 (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: 125     median: 127.7 (12%)     max: 145.4 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
min: 38.56     avg: 46.9     median: 46.5 (1%)     max: 52.25 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
min: 946.1     avg: 1142     median: 1169 (27%)     max: 1333 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
min: 1145     avg: 1454     median: 1517 (28%)     max: 1608 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
min: 381.8     avg: 464     median: 441 (26%)     max: 591.6 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
min: 368.5     avg: 453     median: 474.1 (30%)     max: 528.1 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
min: 1315.2     avg: 1381     median: 1381 (27%)     max: 1456 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
min: 2085     avg: 2275     median: 2301 (26%)     max: 2358 MB/s
DiskSpd - DiskSpd 4k_q1t1_write
min: 100     avg: 131     median: 125.9 (48%)     max: 155 MB/s
DiskSpd - DiskSpd 4k_q1t1_read
min: 39.3     avg: 48.3     median: 49.5 (18%)     max: 55 MB/s
DiskSpd - DiskSpd 4k_q32t16_write
min: 378.47     avg: 733     median: 936.7 (28%)     max: 958 MB/s
DiskSpd - DiskSpd 4k_q32t16_read
min: 722     avg: 900     median: 954 (32%)     max: 957.1 MB/s
DiskSpd - DiskSpd seq_write
min: 1004.75     avg: 1148     median: 1143 (27%)     max: 1318 MB/s
DiskSpd - DiskSpd seq_q8t1_write
min: 1264     avg: 1348     median: 1339 (27%)     max: 1422.92 MB/s
DiskSpd - DiskSpd seq_q8t1_read
min: 2036     avg: 2262     median: 2300.4 (34%)     max: 2365 MB/s
DiskSpd - DiskSpd Loop seq_q8t1_read
min: 1763.22     avg: 2056     median: 2052.2 (30%)     max: 2357 MB/s
010020030040050060070080090010001100120013001400150016001700180019002000210022002300Tooltip
- 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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Notebook reviews with Samsung PM991 MZALQ512HALU

Lenovo IdeaPad 5 14ARE05: AMD Ryzen 5 4500U AMD Radeon RX Vega 6 (Ryzen 4000/5000), 14.00", 1.4 kg
  Review » Lenovo IdeaPad 5 14ARE05 in review: A lot of computing power in a compact case

Lenovo Legion 5 15IMH05H: Intel Core i5-10300H NVIDIA GeForce RTX 2060 Mobile, 15.60", 2.5 kg
  Review » Lenovo Legion 5 15IMH05H Review: Excellent power delivery and good battery life

Lenovo ThinkPad E15 20RD0011GE: Intel Core i7-10510U AMD Radeon RX 640, 15.60", 1.8 kg
  Review » Lenovo ThinkPad E15 Laptop Review: Too much performance with too little cooling

Lenovo ThinkPad E15 Gen2-20T9S00K00: AMD Ryzen 7 4700U AMD Radeon RX Vega 7, 15.60", 1.8 kg
  Review » Lenovo ThinkPad E15 Gen.2 Review: Office laptop with an AMD chip and new design

Lenovo Yoga 7 14ITL5: Intel Core i5-1135G7 Intel Iris Xe Graphics G7 80EUs, 14.00", 1.5 kg
  Review » Lenovo Yoga 7i 14-inch Tiger Lake Laptop Review: Core i5-1135G7 Debut

Lenovo IdeaPad 5 14ARE05: AMD Ryzen 5 4500U AMD Radeon RX Vega 6 (Ryzen 4000/5000), 14.00", 1.4 kg
  External Review » Lenovo IdeaPad 5 14ARE05

Lenovo ThinkPad E15 Gen2-20T9S00K00: AMD Ryzen 7 4700U AMD Radeon RX Vega 7, 15.60", 1.8 kg
  External Review » Lenovo ThinkPad E15 Gen2-20T9S00K00

Lenovo IdeaPad 5 14ARE05: AMD Ryzen 5 4500U AMD Radeon RX Vega 6 (Ryzen 4000/5000), 14.00", 1.4 kg
   » Powerful subnotebook thanks to Ryzen 5 4500U: Lenovo IdeaPad 5 14ARE05

Lenovo Legion 5 15IMH05H: Intel Core i5-10300H NVIDIA GeForce RTX 2060 Mobile, 15.60", 2.5 kg
   » Wish you could turn Nvidia Optimus on and off? The Lenovo Legion 5 15IMH05H lets you do just that

Lenovo ThinkPad E15 Gen2-20T9S00K00: AMD Ryzen 7 4700U AMD Radeon RX Vega 7, 15.60", 1.8 kg
   » The first ThinkPad with Ryzen 4000 has arrived: AMD much faster than Intel

   » Lenovo's ThinkPad E15 Gen.2 AMD offers a more compact design and a lot more performance

Lenovo Yoga 7 14ITL5: Intel Core i5-1135G7 Intel Iris Xe Graphics G7 80EUs, 14.00", 1.5 kg
   » Lenovo Yoga 7i Core i5-1135G7 CPU is on par with the Core i7-1165G7, but its Iris Xe graphics is way behind

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Laptop harddisks (HDD, SSD) benchmarks > Samsung SSD PM991 MZALQ512HALU Benchmarked
Klaus Hinum (Update: 2020-03-21)