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Samsung PM991a MZVLQ256HBJD

PM991 MZVLQ256HBJD

The Samsung PM991a 256 GB MZVLQ256HBJD is a mid range NVMe 1.3 SSD that uses the M.2 interface (2280). It is rated at a maximum of 3200 MB/s sequential read and 1300 MB/s write.

TypeSSD
SizeM.2
Capacity256 GB
InterfaceNVMe
Announced17.09.2021
LinkSamsung PM991a MZVLQ256HBJD

Benchmarks

Performance Rating - DiskSpd
18.4 pt (22%)
Seagate ST1000LM014 Solid State Hybrid Drive
0.743 -96%
...
WDC PC SN720 SDAPNTW-512G
18.1 -2%
Samsung PM991 MZALQ256HAJD
18.1 -2%
Phison 512GB PA6620060U
18.2 -1%
Kioxia THGJFJT2T85BAT01
18.2 -1%
Lenovo UMIS AM620 RPJTJ512MEE1OWX
18.2 -1%
Ayaneo CyberThunder-2TB
18.4 0%
BiWin CE480Y2D100-512G
18.4 0%
KDI OM3PDP3-AD NVMe KDI 256GB
18.4 0%
Lexar 512GB NM6A1 LNM6A1X512G-HNNG
18.4 0%
Samsung PM991a MZVLQ256HBJD
18.4
Samsung PM991 MZVLQ1T0HALB
18.5 1%
Toshiba KBG40ZNS512G NVMe
18.5 1%
Samsung PM991 MZVLQ512HALU
18.6 1%
Samsung PM991 MZVLQ256HAJD
18.7 2%
Intel SSDPEMKF512G8 NVMe SSD
18.7 2%
Micron 2400 MTFDKBA512QFM
18.9 3%
Netac G938E
18.9 3%
SK Hynix HFS001TEJ9X164N
18.9 3%
Foresee GSYAPGC-512G
19 3%
...
Samsung 9100 Pro 2 TB
82.7 349%
0%
100%
Restrict / Search: Model: Max. age: years
AS SSD - Copy Game
min: 698     avg: 780     median: 700.4 (12%)     max: 942.75 MB/s
+ 3 benchmarks and specifications   + Show comparison chart
AS SSD - Copy Program
min: 331.83     avg: 408.1     median: 349.4 (13%)     max: 543.21 MB/s
+ 3 benchmarks and specifications   + Show comparison chart
AS SSD - Copy ISO
min: 1008.14     avg: 1097     median: 1034 (9%)     max: 1249.94 MB/s
+ 3 benchmarks and specifications   + Show comparison chart
AS SSD - Score Total
min: 2470     avg: 2532     median: 2505.5 (18%)     max: 2645 Points
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Score Write
min: 952     avg: 1049     median: 1030 (14%)     max: 1184 Points
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Score Read
min: 925     avg: 1017     median: 1031.5 (22%)     max: 1078 Points
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Write *
min: 0.023     avg: 0     median: 0 (0%)     max: 0.039 ms
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Read *
min: 0.076     avg: 0.1     median: 0.1 (0%)     max: 0.18 ms
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Write
min: 695.1     avg: 813     median: 772.9 (13%)     max: 1011.23 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Read
min: 682     avg: 746     median: 757.4 (21%)     max: 788 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Write
min: 98.57     avg: 144.6     median: 157.3 (31%)     max: 165.5 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Read
min: 39.66     avg: 47.5     median: 47.7 (15%)     max: 54.7 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Write
min: 739     avg: 912     median: 932.9 (8%)     max: 1042 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Read
min: 2035     avg: 2228     median: 2263 (18%)     max: 2349 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
min: 109.07     avg: 136.4     median: 147.1 (13%)     max: 153 MB/s
+ 3 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
min: 37.21     avg: 49.9     median: 56 (1%)     max: 56.44 MB/s
+ 3 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
min: 1175     avg: 1193     median: 1193 (6%)     max: 1211 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
min: 1682     avg: 1746     median: 1746 (21%)     max: 1810 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
min: 379.96     avg: 419.3     median: 430.5 (14%)     max: 447.3 MB/s
+ 3 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
min: 352.63     avg: 473.2     median: 493.9 (8%)     max: 573 MB/s
+ 3 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
min: 1103     avg: 1182     median: 1210.1 (8%)     max: 1234 MB/s
+ 3 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
min: 1974     avg: 2695     median: 3009 (16%)     max: 3102 MB/s
+ 3 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 6 Write 4K Q8T8
min: 350.86     avg: 423.5     median: 423.5 (8%)     max: 496.1 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 6 Read 4K Q8T8
min: 806.11     avg: 854     median: 854.1 (13%)     max: 902 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_write
min: 92     avg: 135     median: 133 (31%)     max: 182.1 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_read
min: 41.5     avg: 48.6     median: 48.3 (14%)     max: 56.2 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_write
min: 359     avg: 587     median: 620.5 (11%)     max: 749 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_read
min: 718     avg: 818     median: 813.5 (13%)     max: 926 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_write
min: 1129     avg: 1182     median: 1190.5 (13%)     max: 1219 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_read
min: 1462     avg: 1640     median: 1616.5 (23%)     max: 1864 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_write
min: 1014     avg: 1132     median: 1140 (8%)     max: 1234 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_read
min: 1584     avg: 2411     median: 2469.5 (15%)     max: 3119 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd Loop seq_q8t1_read
min: 1717     avg: 1970     median: 1904.5 (12%)     max: 2353 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
01002003004005006007008009001000110012001300140015001600170018001900200021002200230024002500260027002800290030003100Tooltip
- Range of benchmark values for this graphics card
red legend - Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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v1.33
log 11. 16:40:44

#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 Wed, 07 May 2025 17:44:54 +0200 +0.001s ... 0.001s

#4 composed specs +0.006s ... 0.007s

#5 did output specs +0s ... 0.007s

#6 getting avg benchmarks for device 3721 +0.017s ... 0.023s

#7 got single benchmarks 3721 +0.012s ... 0.036s

#8 got avg benchmarks for devices +0s ... 0.036s

#9 min, max, avg, median took s +0.918s ... 0.954s

#10 return log +0.001s ... 0.955s

Notebook reviews with Samsung PM991a MZVLQ256HBJD

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Dynabook Satellite Pro C50D laptop in review - Office computer with AMD Ryzen

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Realme Book (Slim) Core i3

Realme Book (Slim) Laptop Review: Performant Tiger Lake Core i3 offering with a 3:2 2K display

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Samsung Galaxy Book2 Pro 13 NP930XED-KA1DE: Intel Core i5-1240P Intel Iris Xe Graphics G7 80EUs, 13.30", 0.9 kg
  External Review » Samsung Galaxy Book2 Pro 13 NP930XED-KA1DE

Samsung Galaxy Book2 Pro 360 13 NP930QED-KA3DE: Intel Core i7-1260P Intel Iris Xe Graphics G7 96EUs, 13.30", 1 kg
  External Review » Samsung Galaxy Book2 Pro 360 13 NP930QED-KA3DE

Realme Book (Slim): Intel Core i3-1115G4 Intel UHD Graphics Xe G4 48EUs, 14.00", 1.4 kg
  External Review » realme Book (Slim)

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   » Samsung Galaxy Book2 Pro 360: 2-in-1-laptop with OLED display

Samsung Galaxy Book2 Pro 13 NP930XED-KA1DE: Intel Core i5-1240P Intel Iris Xe Graphics G7 80EUs, 13.30", 0.9 kg
   » Ultra-compact and bright: Samsung Galaxy Book2 Pro 13 with Alder Lake and OLED in review

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Klaus Hinum (Update: 2021-09-17)