Average Bench: 60.1% (495th of 853)

Based on 820 user benchmarks.  Models: SAMSUNG SSD PM851 mSATA 256GB, SAMSUNG SSD PM851 mSATA

Above average average bench

The Samsung PM851 mSATA 256GB averaged 39.8% 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 Random Read Speed 23.6MB/s
Avg. Sequential Read Speed 475MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 mSATA 256GB is 36.7%. 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 24.6MB/s
Avg. Sequential Write Speed 174MB/s
ADVERTISEMENT

Average Bench

(Based on 820 samples)
Min Avg Max
350 Read 475 509
37.7 Write 174 259
77.9 Mixed 241 344
64.9% 297 MB/s
Min Avg Max
12.4 4K Read 23.6 32.9
23.1 4K Write 54.8 87.9
7.87 4K Mixed 12.4 16.3
80.6% 30.3 MB/s
Min Avg Max
18.4 DQ Read 192 364
33.4 DQ Write 128 250
8.97 DQ Mixed 24.6 39.1
55% 115 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
138GB free
Firmware: EXT4 Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 509
Write 259
Mixed 153
67% 307 MB/s
4K Read 34.7
4K Write 78.6
4K Mixed 15.8
114% 43.1 MB/s
DQ Read 315
DQ Write 218
DQ Mixed 42.7
92% 192 MB/s
139GB free
Firmware: EXT4 Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 507
Write 258
Mixed 179
69% 315 MB/s
4K Read 35.4
4K Write 82.6
4K Mixed 13
114% 43.7 MB/s
DQ Read 203
DQ Write 201
DQ Mixed 38.9
74% 147 MB/s
139GB free
Firmware: EXT49D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 495
Write 254
Mixed 341
80% 363 MB/s
4K Read 22.5
4K Write 77.3
4K Mixed 14
93% 37.9 MB/s
DQ Read 302
DQ Write 235
DQ Mixed 38.7
91% 192 MB/s
170GB free
Firmware: EXT48D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 496
Write 255
Mixed 335
80% 362 MB/s
4K Read 30.9
4K Write 80.8
4K Mixed 12.9
106% 41.5 MB/s
DQ Read 27
DQ Write 254
DQ Mixed 10.9
47% 97.2 MB/s
40GB free
Firmware: EXT48D0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 475
Write 61.1
Mixed 64.1
42% 200 MB/s
4K Read 26.9
4K Write 46.2
4K Mixed 12.8
82% 28.6 MB/s
DQ Read 259
DQ Write 99.4
DQ Mixed 32.3
63% 130 MB/s
186GB free
Firmware: EXT4AD0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 327
Write 197
Mixed 252
57% 259 MB/s
4K Read 22.4
4K Write 67.5
4K Mixed 13.5
87% 34.5 MB/s
DQ Read 27.2
DQ Write 69.4
DQ Mixed 13.6
20% 36.8 MB/s
6GB free
Firmware: EXT4AD0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 381
Write 25
Mixed 53.4
32% 153 MB/s
4K Read 26.3
4K Write 31.5
4K Mixed 10.4
70% 22.8 MB/s
DQ Read 284
DQ Write 41.1
DQ Mixed 11
47% 112 MB/s
42GB free
Firmware: EXT4AD0Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Read 478
Write 67.7
Mixed 146
50% 231 MB/s
4K Read 18.2
4K Write 31.3
4K Mixed 9.43
56% 19.6 MB/s
DQ Read 21.9
DQ Write 47.9
DQ Mixed 9.25
14% 26.3 MB/s
820 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,087,090 SSDs tested.

Typical PM851 mSATA 256GB Builds (Compare 925 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) June 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]

 Comments

853 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 $309Nvidia GTX 1070 $390Samsung 850 Evo 250GB $100
AMD Ryzen 7 1700 $278AMD RX 480 $608Samsung 850 Pro 256GB $130
Intel Core i5-7600K $225Nvidia GTX 1060-6GB $239Samsung 850 Evo 500GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $83G.SKILL Trident Z DDR4 3200 C14 4x16GB $696SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46HyperX Fury DDR4 2133 C14 2x8GB $144SanDisk Ultra Fit 32GB $13
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback