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Samsung PM991 MZ9LQ512HALU

PM991 MZ9LQ512HALU

The Samsung PM991 MZ9LQ512HALU is a mid range PCIe M.2 2230 NVMe SSD.

TypeSSD
SizeM.2 2230
Capacity512 GB
InterfaceM.2
Announced23.06.2020

Benchmarks

Performance Rating - DiskSpd
15.3 pt (17%)
Seagate ST1000LM014 Solid State Hybrid Drive
0.687 -96%
...
Transcend M.2 SSD 430S TS512GMTS430S
14.8 -3%
SK hynix BC511 HFM512GDHTNI-87A0B
14.9 -3%
WDC PC SN530 SDBPTPZ-512G
14.9 -3%
GSemi AZW GSDFN512TS3F1OGCX
14.9 -3%
Gofatoo 256GB
15 -2%
SK hynix BC501 HFM512GDHTNG-8310A
15.1 -1%
Intel SSD 660p SSDPEKNW512G8
15.1 -1%
TWSC TSC3AN512-F6Q10S
15.2 -1%
Toshiba KBG40ZNS256G NVMe
15.2 -1%
Samsung PM991 MZ9LQ512HALU
15.3
SK Hynix BC511 HFM512GDJTNI
15.3 0%
Netac S930E8/256GPN
15.4 1%
WDC PC SN520 SDAPNUW-512G
15.4 1%
Phison M.2 2280 E18 4000GB
15.4 1%
WDC PC SN520 SDAPMUW-512
15.5 1%
WDC PC SN530 SDBQNPZ-512G
15.5 1%
Toshiba KIOXIA KBG4AZNV512G M.2 2280 OPAL
15.6 2%
Apple SSD AP1024 7171
15.6 2%
SK Hynix BC501 HFM512GDJTNG
15.6 2%
...
Kingston Fury Renegade G5 8TB
88.2 476%
0%
100%
Restrict / Search: Model: Max. age: years
AS SSD - Copy Game
min: 976     avg: 995     median: 994.5 (17%)     max: 1013 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Copy Program
min: 401.9     avg: 515     median: 515 (19%)     max: 628 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Copy ISO
min: 1243     avg: 1264     median: 1263.5 (5%)     max: 1284 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Total
min: 2477     avg: 2507     median: 2506.5 (15%)     max: 2536 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Write
min: 973     avg: 980     median: 980 (14%)     max: 987 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Score Read
min: 1012     avg: 1023     median: 1023 (16%)     max: 1034 Points
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Write *
min: 0.027     avg: 0.1     median: 0.1 (0%)     max: 0.095 ms
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Read *
min: 0.098     avg: 0.1     median: 0.1 (0%)     max: 0.191 ms
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Write
min: 721     avg: 744     median: 743.5 (13%)     max: 766 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Read
min: 782     avg: 818     median: 818 (16%)     max: 854 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Write
min: 128     avg: 134.8     median: 134.8 (26%)     max: 141.6 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Read
min: 41.32     avg: 44.4     median: 44.4 (14%)     max: 47.54 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Write
min: 794     avg: 1014     median: 1014 (9%)     max: 1234 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Read
min: 1386     avg: 1604     median: 1603.5 (13%)     max: 1821 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
min: 118.2     avg: 130.2     median: 130.2 (12%)     max: 142.1 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
min: 37.54     avg: 42     median: 42 (1%)     max: 46.43 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
min: 1017     avg: 1063     median: 1062.5 (6%)     max: 1108 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
min: 926     avg: 1274     median: 1274 (14%)     max: 1622 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
min: 354.2     avg: 410.6     median: 410.6 (9%)     max: 467 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
min: 352.6     avg: 438.8     median: 438.8 (6%)     max: 525 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
min: 1174     avg: 1189     median: 1188.5 (8%)     max: 1203 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read Seq Q32T1
min: 2261     avg: 2275     median: 2274.5 (12%)     max: 2288 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_write
min: 117     avg: 128.5     median: 128.5 (30%)     max: 140 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_read
min: 47.3     avg: 47.7     median: 47.7 (14%)     max: 48 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_write
min: 361     avg: 562     median: 562 (8%)     max: 763 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_read
min: 531     avg: 737     median: 737 (9%)     max: 943 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_write
min: 1050     avg: 1097     median: 1097 (11%)     max: 1144 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_read
min: 998     avg: 1174     median: 1173.5 (14%)     max: 1349 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_write
min: 1122     avg: 1147     median: 1146.5 (8%)     max: 1171 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_read
min: 1942     avg: 2076     median: 2076 (13%)     max: 2210 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd Loop seq_q8t1_read
min: 1328     avg: 1753     median: 1753 (11%)     max: 2178 MB/s
+ 2 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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v1.35
log 06. 12:39:09

#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, 04 Mar 2026 01:57:14 +0100 +0.002s ... 0.002s

#4 composed specs +0.004s ... 0.006s

#5 did output specs +0s ... 0.006s

#6 getting avg benchmarks for device 3501 +0.025s ... 0.032s

#7 got single benchmarks 3501 +0.008s ... 0.039s

#8 got avg benchmarks for devices +0s ... 0.039s

#9 min, max, avg, median took s +4.551s ... 4.59s

#10 return log +0.125s ... 4.715s

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Klaus Hinum (Update: 2020-06-23)