Average Bench: 64.2% (737th of 1058)

Based on 5,877 user benchmarks.  Models: SAMSUNG SSD PM851 mSATA 256GB, SAMSUNG SSD PM851 mSATA

Above average average bench

The Samsung PM851 mSATA 256GB averaged 35.7% 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 312MB/s
Avg. 4K-64Thread Mixed IO Speed 71.5MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 mSATA 256GB is 41.7%. 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 155MB/s
Avg. Sustained Write Speed 166MB/s
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Average Bench

(Based on 5,877 samples)
Min Avg Max
320 Read 413 487
48 Write 191 260
83.2 Mixed 155 196
40.1 SusWrite 166 252
51.1% 231 MB/s
Min Avg Max
10.9 4K Read 22.2 32.4
22.3 4K Write 51.6 80.7
13.6 4K Mixed 21.7 29.1
88.7% 31.8 MB/s
Min Avg Max
143 DQ Read 312 372
49.5 DQ Write 171 256
40.5 DQ Mixed 71.5 83.1
98.6% 185 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
208GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 182 166 245 242 258 258 MB/s
Read 486
Write 263
Mixed 198
SusWrite 225
65% 293 MB/s
4K Read 28.1
4K Write 72.4
4K Mixed 29.1
118% 43.2 MB/s
DQ Read 361
DQ Write 256
DQ Mixed 84
124% 234 MB/s
26GB free (System drive)
Firmware: EXT49D0Q
SusWrite @10s intervals: 253 253 253 253 252 252 MB/s
Read 437
Write 259
Mixed 169
SusWrite 253
62% 280 MB/s
4K Read 18.6
4K Write 59.2
4K Mixed 25.6
92% 34.5 MB/s
DQ Read 351
DQ Write 252
DQ Mixed 81.1
120% 228 MB/s
201GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 235 244 256 245 255 256 MB/s
Read 435
Write 261
Mixed 180
SusWrite 248
62% 281 MB/s
4K Read 20.6
4K Write 52.8
4K Mixed 24.4
90% 32.6 MB/s
DQ Read 361
DQ Write 244
DQ Mixed 77.4
119% 228 MB/s
208GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 249 254 185 254 253 253 MB/s
Read 404
Write 259
Mixed 174
SusWrite 241
60% 270 MB/s
4K Read 18.1
4K Write 32.4
4K Mixed 18.1
68% 22.9 MB/s
DQ Read 174
DQ Write 78.4
DQ Mixed 66.9
65% 106 MB/s
5,877 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 49,339,261 SSDs tested.

Typical PM851 mSATA 256GB Builds (Compare 3,347 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.

UserBenchmark of the month

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 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 i5-12600K $300Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11600K $220Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-11700K $300Nvidia RTX 3080 $700Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $38Corsair Vengeance LPX DDR4 3200 C16 2x8GB $63SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $33Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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