Average Bench: 61.3% (471st of 848)

Based on 715 user benchmarks.  Models: SAMSUNG SSD PM851 mSATA 256GB, SAMSUNG SSD PM851 mSATA

Above average average bench

The Samsung PM851 mSATA 256GB averaged 38.6% 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 Random Read Speed 24.2MB/s
Avg. Sequential Read Speed 479MB/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. 4K-64Thread Mixed IO Speed 25.2MB/s
Avg. Sequential Write Speed 178MB/s
ADVERTISEMENT

Average Bench

(Based on 715 samples)
Min Avg Max
373 Read 479 510
37.6 Write 178 259
76.1 Mixed 243 344
65.6% 300 MB/s
Min Avg Max
12.9 4K Read 24.2 33.5
23.7 4K Write 56.9 91.8
7.95 4K Mixed 12.5 16.4
82.8% 31.2 MB/s
Min Avg Max
19.7 DQ Read 198 365
35.4 DQ Write 134 251
9.21 DQ Mixed 25.2 39
56.9% 119 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
122GB free
Firmware: EXT4AD0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 493
Write 128
Mixed 213
60% 278 MB/s
4K Read 28.5
4K Write 70.8
4K Mixed 15.4
100% 38.2 MB/s
DQ Read 346
DQ Write 187
DQ Mixed 36.2
88% 190 MB/s
102GB free
Firmware: EXT48D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 494
Write 225
Mixed 326
77% 348 MB/s
4K Read 22.6
4K Write 40.2
4K Mixed 14.1
74% 25.6 MB/s
DQ Read 289
DQ Write 42.5
DQ Mixed 14.5
49% 115 MB/s
129GB free
Firmware: EXT4AD0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 501
Write 187
Mixed 265
70% 318 MB/s
4K Read 28
4K Write 71.7
4K Mixed 13.7
98% 37.8 MB/s
DQ Read 27.9
DQ Write 81.4
DQ Mixed 14.2
22% 41.2 MB/s
157GB free
Firmware: EXT49D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 498
Write 221
Mixed 280
73% 333 MB/s
4K Read 14.8
4K Write 46.6
4K Mixed 12.7
63% 24.7 MB/s
DQ Read 21.3
DQ Write 77.3
DQ Mixed 12.3
20% 37 MB/s
48GB free
Firmware: EXT48D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 488
Write 85.6
Mixed 114
49% 229 MB/s
4K Read 26.3
4K Write 53.4
4K Mixed 11
82% 30.2 MB/s
DQ Read 21.2
DQ Write 97.5
DQ Mixed 32
33% 50.2 MB/s
715 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,355,258 SSDs tested.

Typical PM851 mSATA 256GB Builds (Compare 742 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 13%
Tree trunk
Desktop
Desktop 41%
Speed boat
Workstation
Workstation 23%
Surfboard

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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) March 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

848 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 i7-7700K $310Nvidia GTX 1070 $370Samsung 850 Evo 250GB $94
AMD Ryzen 7 1700 $325AMD RX 480 $193Samsung 850 Pro 256GB $138
Intel Core i5-7600K $215Nvidia GTX 1060-6GB $235Samsung 850 Evo 500GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $110SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $650SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $50Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $9
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback