Average Bench: 63.2% (684th of 1011)

Based on 1,210 user benchmarks.  Model: SAMSUNG SSD PM851 M.2 2280 256GB

Above average average bench

The Samsung PM851 M.2 2280 256GB averaged 36.7% 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 302MB/s
Avg. 4K-64Thread Mixed IO Speed 69.4MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 M.2 2280 256GB is 45%. This is a relatively wide range which indicates that the Samsung PM851 M.2 2280 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 145MB/s
Avg. Sustained Write Speed 155MB/s
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Average Bench

(Based on 1,210 samples)
Min Avg Max
314 Read 417 495
45.5 Write 171 261
75.1 Mixed 145 195
40.9 SusWrite 155 252
48.9% 222 MB/s
Min Avg Max
11.1 4K Read 21.7 30
21.4 4K Write 53.1 92.5
12.3 4K Mixed 21.6 29.7
88.6% 32.1 MB/s
Min Avg Max
150 DQ Read 302 371
46 DQ Write 158 255
42.7 DQ Mixed 69.4 81.9
94.4% 176 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
204GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 215 221 251 254 253 254 MB/s
Read 434
Write 259
Mixed 187
SusWrite 241
62% 280 MB/s
4K Read 29.7
4K Write 99
4K Mixed 25.8
130% 51.5 MB/s
DQ Read 366
DQ Write 245
DQ Mixed 76.7
119% 229 MB/s
194GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 230 223 248 252 251 247 MB/s
Read 463
Write 212
Mixed 182
SusWrite 242
61% 275 MB/s
4K Read 29.8
4K Write 85.3
4K Mixed 25.9
124% 47 MB/s
DQ Read 361
DQ Write 246
DQ Mixed 79.1
120% 229 MB/s
141GB free (System drive)
Firmware: EXT23D0Q
SusWrite @10s intervals: 138 130 140 132 137 121 MB/s
Read 438
Write 148
Mixed 147
SusWrite 133
48% 217 MB/s
4K Read 22
4K Write 66.4
4K Mixed 21.3
96% 36.6 MB/s
DQ Read 287
DQ Write 161
DQ Mixed 71.9
94% 173 MB/s
215GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 220 232 251 252 251 227 MB/s
Read 288
Write 256
Mixed 146
SusWrite 239
52% 232 MB/s
4K Read 13.9
4K Write 58.4
4K Mixed 12.3
68% 28.2 MB/s
DQ Read 201
DQ Write 75.2
DQ Mixed 49.1
60% 108 MB/s
71GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 168 73 47 41 45 49 MB/s
Read 307
Write 80.8
Mixed 109
SusWrite 70.4
31% 142 MB/s
4K Read 16.9
4K Write 40.3
4K Mixed 14.3
65% 23.8 MB/s
DQ Read 361
DQ Write 74.9
DQ Mixed 64.9
87% 167 MB/s
1,210 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 17,664,733 SSDs tested.

Typical PM851 M.2 2280 256GB Builds (Compare 1,128 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 13%
Tree trunk
Desktop
Desktop 38%
Jet ski
Workstation
Workstation 20%
Surfboard

System: Dell XPS 13 9343

EDIT WITH CUSTOM PC BUILDER

Popular PM851 M.2 2280 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.
  • - 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.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) September 2019 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

1011 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 i5-9400F $140Nvidia GTX 1660 $220Samsung 850 Evo 250GB $70
Intel Core i5-9600K $225Nvidia GTX 1660-Ti $278Samsung 850 Evo 500GB $105
AMD Ryzen 5 3600 $195Nvidia RTX 2060 $340Samsung 850 Pro 256GB $203
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $70SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $34G.SKILL Trident Z DDR4 3200 C14 4x16GB $606SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $64Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 16GB $24
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