Average Bench: 64.5% (735th of 1058)

Based on 6,637 user benchmarks.  Models: SAMSUNG SSD PM851 mSATA 256GB, SAMSUNG SSD PM851 mSATA

Above average average bench

The Samsung PM851 mSATA 256GB averaged 35.4% 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 322MB/s
Avg. 4K-64Thread Mixed IO Speed 71.9MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 mSATA 256GB is 39.2%. This is a relatively wide range which indicates that the Samsung PM851 mSATA 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 154MB/s
Avg. Sustained Write Speed 165MB/s
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Average Bench

(Based on 6,637 samples)
Min Avg Max
315 Read 412 485
46.8 Write 189 259
84.9 Mixed 154 192
42 SusWrite 165 252
50.8% 230 MB/s
Min Avg Max
10.8 4K Read 22.4 32.7
23.5 4K Write 51.4 79.5
13.7 4K Mixed 21.9 28.8
89.2% 31.9 MB/s
Min Avg Max
155 DQ Read 322 372
51.5 DQ Write 171 256
46.9 DQ Mixed 71.9 83.1
100% 188 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
175GB free (System drive)
Firmware: EXT48D0Q
SusWrite @10s intervals: 213 201 240 236 238 245 MB/s
Read 347
Write 246
Mixed 167
SusWrite 229
55% 247 MB/s
4K Read 18.1
4K Write 68.1
4K Mixed 18.9
88% 35 MB/s
DQ Read 321
DQ Write 234
DQ Mixed 66.1
107% 207 MB/s
203GB free (System drive)
Firmware: EXT49D0Q
SusWrite @10s intervals: 161 151 134 138 108 127 MB/s
Read 430
Write 177
Mixed 158
SusWrite 136
50% 225 MB/s
4K Read 18.7
4K Write 48
4K Mixed 23.4
84% 30 MB/s
DQ Read 365
DQ Write 160
DQ Mixed 78.2
107% 201 MB/s
183GB free (System drive)
Firmware: EXT48D0Q
SusWrite @10s intervals: 220 212 243 248 244 252 MB/s
Read 389
Write 257
Mixed 186
SusWrite 236
60% 267 MB/s
4K Read 14
4K Write 31.4
4K Mixed 16.3
59% 20.6 MB/s
DQ Read 287
DQ Write 214
DQ Mixed 77.6
105% 193 MB/s
81GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 63 50 50 52 48 47 MB/s
Read 422
Write 73.4
Mixed 105
SusWrite 51.7
35% 163 MB/s
4K Read 24.5
4K Write 47
4K Mixed 23.4
92% 31.6 MB/s
DQ Read 352
DQ Write 69.1
DQ Mixed 58.4
82% 160 MB/s
90GB free (System drive)
Firmware: EXT48D0Q
SusWrite @10s intervals: 240 150 144 99 86 77 MB/s
Read 369
Write 259
Mixed 179
SusWrite 133
52% 235 MB/s
4K Read 15.9
4K Write 25.8
4K Mixed 16.6
59% 19.4 MB/s
DQ Read 191
DQ Write 132
DQ Mixed 69.6
77% 131 MB/s
189GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 41 27 34 37 40 32 MB/s
Read 362
Write 55
Mixed 118
SusWrite 35.3
31% 142 MB/s
4K Read 21.8
4K Write 37.6
4K Mixed 18.9
77% 26.1 MB/s
DQ Read 249
DQ Write 18
DQ Mixed 54.3
60% 107 MB/s
6,637 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 56,071,775 SSDs tested.

Typical PM851 mSATA 256GB Builds (Compare 3,960 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 6%
Tree trunk
Desktop
Desktop 54%
Yacht
Workstation
Workstation 6%
Tree trunk

System: Dell Latitude E7440

EDIT WITH CUSTOM PC BUILDER

Popular PM851 mSATA 256GB 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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) June 2022 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 i5-12600K $280Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-12400F $170Nvidia RTX 3070 $500Samsung 850 Evo 120GB $111
Intel Core i7-12700K $380Nvidia RTX 3050 $250Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $33Corsair Vengeance LPX DDR4 3200 C16 2x8GB $69SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $470SanDisk Ultra Fit 32GB $16
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