Average Bench: 65% (741st of 1069)

Based on 6,648 user benchmarks.  Models: SAMSUNG SSD PM851 mSATA 256GB, SAMSUNG SSD PM851 mSATA

Above average average bench

The Samsung PM851 mSATA 256GB averaged 35.0% 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 323MB/s
Avg. 4K-64Thread Mixed IO Speed 72.4MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 mSATA 256GB is 39.6%. 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 167MB/s
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Average Bench

(Based on 6,648 samples)
Min Avg Max
316 Read 412 483
44.6 Write 187 259
81.3 Mixed 154 193
41.5 SusWrite 167 252
50.8% 230 MB/s
Min Avg Max
10.9 4K Read 22.7 32.9
23.5 4K Write 52 79.7
13.2 4K Mixed 22.1 29.1
90.2% 32.3 MB/s
Min Avg Max
152 DQ Read 323 372
50.1 DQ Write 172 256
48.2 DQ Mixed 72.4 82.9
101% 189 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
64GB free
Firmware: EXT49D0Q
SusWrite @10s intervals: 200 226 256 254 256 255 MB/s
Read 425
Write 262
Mixed 234
SusWrite 241
65% 291 MB/s
4K Read 15.8
4K Write 23.7
4K Mixed 16.9
58% 18.8 MB/s
DQ Read 348
DQ Write 256
DQ Mixed 75.5
118% 226 MB/s
42GB free (System drive)
Firmware: EXT48D0Q
SusWrite @10s intervals: 59 40 34 33 37 34 MB/s
Read 457
Write 41.8
Mixed 98.2
SusWrite 39.5
34% 159 MB/s
4K Read 28.3
4K Write 38.3
4K Mixed 24.8
95% 30.5 MB/s
DQ Read 342
DQ Write 62
DQ Mixed 59.7
80% 155 MB/s
106GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 82 63 61 61 56 58 MB/s
Read 451
Write 130
Mixed 139
SusWrite 63.4
43% 196 MB/s
4K Read 21.3
4K Write 42.9
4K Mixed 21.1
82% 28.4 MB/s
DQ Read 356
DQ Write 121
DQ Mixed 74.7
98% 184 MB/s
162GB free (System drive)
Firmware: EXT48D0Q
SusWrite @10s intervals: 253 249 254 252 255 243 MB/s
Read 397
Write 264
Mixed 177
SusWrite 251
61% 272 MB/s
4K Read 16.3
4K Write 21.1
4K Mixed 16.2
57% 17.9 MB/s
DQ Read 118
DQ Write 68.8
DQ Mixed 70.9
59% 85.8 MB/s
6,648 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 60,765,647 SSDs tested.

Typical PM851 mSATA 256GB Builds (Compare 1,287 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 6%
Tree trunk
Desktop
Desktop 53%
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) November 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

1069 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 i5-13600K $320Nvidia RTX 3060-Ti $468Crucial MX500 250GB $37
Intel Core i7-12700K $329Nvidia RTX 3070 $450Samsung 850 Evo 120GB $106
Intel Core i5-12400F $170Nvidia RTX 3050 $270Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $41Corsair Vengeance LPX DDR4 3000 C15 2x8GB $50SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $29Corsair Vengeance LPX DDR4 3200 C16 2x8GB $50SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $453SanDisk Ultra Fit 32GB $16
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