Average Bench: 118% (200th of 1080)

Based on 1,499 user benchmarks.  Model: NVMe PM991a NVMe Samsung 256GB

Outstanding average bench

The Nvme PM991a Samsung 256GB averaged 18.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Nvme PM991a Samsung 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 353MB/s
Avg. 4K-64Thread Read Speed 545MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Nvme PM991a Samsung 256GB is 148%. This is a particularly wide range which indicates that the Nvme PM991a Samsung 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 256MB/s
Avg. Sequential Write Speed 488MB/s
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Average Bench

(Based on 1,499 samples)
Min Avg Max
495 Read 979 1,508
79.2 Write 488 1,153
149 Mixed 516 1,190
80.3 SusWrite 256 535
124% 560 MB/s
Min Avg Max
14.5 4K Read 33.7 51.6
31.6 4K Write 87 152
14.8 4K Mixed 39.6 71.9
148% 53.4 MB/s
Min Avg Max
199 DQ Read 545 883
78.2 DQ Write 287 1,020
123 DQ Mixed 353 815
279% 395 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
118GB free (System drive)
Firmware: 26304039 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 119 118 116 114 115 114 MB/s
Read 1071
Write 136
Mixed 230
SusWrite 116
83% 388 MB/s
4K Read 35.4
4K Write 102
4K Mixed 40.5
159% 59.2 MB/s
DQ Read 484
DQ Write 123
DQ Mixed 166
158% 258 MB/s
107GB free (System drive)
Firmware: 26304039 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 135 121 124 123 132 123 MB/s
Read 894
Write 135
Mixed 193
SusWrite 126
73% 337 MB/s
4K Read 32.3
4K Write 102
4K Mixed 39.2
153% 57.7 MB/s
DQ Read 485
DQ Write 138
DQ Mixed 155
155% 259 MB/s
39GB free (System drive)
Firmware: 26304039 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 123 95 90 87 84 86 MB/s
Read 1052
Write 147
Mixed 198
SusWrite 94.3
80% 373 MB/s
4K Read 25.4
4K Write 105
4K Mixed 34.3
138% 54.9 MB/s
DQ Read 489
DQ Write 71
DQ Mixed 192
163% 250 MB/s
11GB free (System drive)
Firmware: 26304039 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 69 65 60 60 52 57 MB/s
Read 1,058
Write 76.3
Mixed 134
SusWrite 60.4
70% 332 MB/s
4K Read 37.6
4K Write 68.1
4K Mixed 35.4
138% 47 MB/s
DQ Read 482
DQ Write 67.8
DQ Mixed 129
132% 226 MB/s
38GB free (System drive)
Firmware: 26302039 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 114 94 93 88 92 90 MB/s
Read 1003
Write 120
Mixed 236
SusWrite 95.2
78% 364 MB/s
4K Read 28.4
4K Write 72.1
4K Mixed 32.5
123% 44.3 MB/s
DQ Read 480
DQ Write 109
DQ Mixed 149
147% 246 MB/s
96GB free (System drive)
Firmware: 26304039 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 113 111 107 99 98 96 MB/s
Read 863
Write 113
Mixed 201
SusWrite 104
69% 320 MB/s
4K Read 27.2
4K Write 70.2
4K Mixed 31.1
118% 42.8 MB/s
DQ Read 476
DQ Write 99.7
DQ Mixed 197
168% 258 MB/s
34GB free (System drive)
Firmware: 26304039 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 92 85 87 84 82 82 MB/s
Read 976
Write 92.9
Mixed 169
SusWrite 85.2
71% 331 MB/s
4K Read 25.1
4K Write 67.8
4K Mixed 25.3
106% 39.4 MB/s
DQ Read 490
DQ Write 91.7
DQ Mixed 145
144% 242 MB/s
136GB free (System drive)
Firmware: 26304039 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 112 108 109 111 104 103 MB/s
Read 724
Write 135
Mixed 196
SusWrite 108
63% 291 MB/s
4K Read 29.7
4K Write 35.6
4K Mixed 23.7
94% 29.7 MB/s
DQ Read 479
DQ Write 92.7
DQ Mixed 158
149% 243 MB/s
1,499 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 76,410,527 SSDs tested

Typical PM991a Samsung 256GB Builds (Compare 3,714 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 13%
Tree trunk
Desktop
Desktop 74%
Battleship
Workstation
Workstation 11%
Tree trunk

System: Dell Inspiron 15 3511

EDIT WITH CUSTOM PC BUILDER

Popular PM991a Samsung 256GB systems:

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