Average Bench: 58.2% (801st of 1058)

Based on 2,629 user benchmarks.  Model: SAMSUNG SSD PM851 2.5 7mm 128GB

Average average bench

The Samsung PM851 2.5 7mm 128GB averaged 41.8% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. 4K-64Thread Read Speed 318MB/s
Avg. 4K Random Read Speed 22.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 128GB is 34%. This is a relatively narrow range which indicates that the Samsung PM851 2.5 7mm 128GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 95.9MB/s
Avg. Sequential Write Speed 102MB/s
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Average Bench

(Based on 2,629 samples)
Min Avg Max
327 Read 426 493
30.9 Write 102 139
56.6 Mixed 122 162
26.4 SusWrite 95.9 134
40.6% 187 MB/s
Min Avg Max
12.9 4K Read 22.6 30.4
22.7 4K Write 52.6 93.5
12.1 4K Mixed 19.3 25.5
86.7% 31.5 MB/s
Min Avg Max
142 DQ Read 318 365
31.3 DQ Write 99.4 141
28.4 DQ Mixed 54.5 64.8
80.6% 157 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
111GB free
Firmware: EXT07D0Q
SusWrite @10s intervals: 136 135 135 135 135 135 MB/s
Read 487
Write 138
Mixed 163
SusWrite 135
50% 231 MB/s
4K Read 37
4K Write 89.9
4K Mixed 26.1
137% 51 MB/s
DQ Read 361
DQ Write 141
DQ Mixed 65.7
98% 189 MB/s
119GB free
Firmware: EXT08D0Q
SusWrite @10s intervals: 134 133 133 133 133 133 MB/s
Read 475
Write 138
Mixed 160
SusWrite 133
50% 226 MB/s
4K Read 20.8
4K Write 69.5
4K Mixed 22.3
97% 37.5 MB/s
DQ Read 352
DQ Write 141
DQ Mixed 56.5
92% 183 MB/s
19GB free
Firmware: EXT08D0Q
SusWrite @10s intervals: 83 112 56 117 130 125 MB/s
Read 464
Write 41.3
Mixed 69.5
SusWrite 104
36% 170 MB/s
4K Read 31
4K Write 39.7
4K Mixed 22.8
97% 31.2 MB/s
DQ Read 362
DQ Write 42.2
DQ Mixed 53.7
77% 152 MB/s
79GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 117 123 115 94 109 106 MB/s
Read 406
Write 135
Mixed 153
SusWrite 111
44% 201 MB/s
4K Read 24.7
4K Write 61.8
4K Mixed 21.5
98% 36 MB/s
DQ Read 345
DQ Write 138
DQ Mixed 63.6
94% 182 MB/s
80GB free (System drive)
Firmware: 8D0Q
SusWrite @10s intervals: 96 88 86 88 85 87 MB/s
Read 426
Write 101
Mixed 123
SusWrite 88.4
40% 185 MB/s
4K Read 24
4K Write 66.3
4K Mixed 20.9
98% 37.1 MB/s
DQ Read 364
DQ Write 111
DQ Mixed 62
92% 179 MB/s
60GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 132 123 127 125 126 124 MB/s
Read 423
Write 104
Mixed 118
SusWrite 126
42% 193 MB/s
4K Read 20.9
4K Write 48.3
4K Mixed 19.2
82% 29.5 MB/s
DQ Read 350
DQ Write 93.7
DQ Mixed 62.4
87% 169 MB/s
60GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 114 127 128 119 120 125 MB/s
Read 386
Write 122
Mixed 135
SusWrite 122
42% 191 MB/s
4K Read 19.5
4K Write 47.5
4K Mixed 20
80% 29 MB/s
DQ Read 348
DQ Write 109
DQ Mixed 59.2
88% 172 MB/s
44GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 120 116 132 132 124 124 MB/s
Read 362
Write 98.1
Mixed 104
SusWrite 125
38% 172 MB/s
4K Read 26.8
4K Write 49.5
4K Mixed 22.7
96% 33 MB/s
DQ Read 30.9
DQ Write 73.7
DQ Mixed 24.6
27% 43.1 MB/s
2,629 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 44,153,171 SSDs tested.

Typical PM851 2.5 7mm 128GB Builds (Compare 1,878 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 78%
Battleship

System: Alienware Area-51 R2

EDIT WITH CUSTOM PC BUILDER Value: 66% - Good Total price: $625

Popular PM851 2.5 7mm 128GB systems:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) June 2021 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.

 Comments

1058 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i5-11400F $220Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11600K $259Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i7-10700K $300Nvidia RTX 3080 $700Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $94SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $100G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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