Average Bench: 62.2% (762nd of 1058)

Based on 1,831 user benchmarks.  Model: SAMSUNG SSD PM851 M.2 2280 256GB

Above average average bench

The Samsung PM851 M.2 2280 256GB averaged 37.8% 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-64Thread Read Speed 307MB/s
Avg. 4K-64Thread Mixed IO Speed 69.8MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 M.2 2280 256GB is 43.7%. 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 144MB/s
Avg. Sustained Write Speed 154MB/s
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Average Bench

(Based on 1,831 samples)
Min Avg Max
317 Read 417 493
43.2 Write 169 260
71.7 Mixed 144 197
42 SusWrite 154 253
48.7% 221 MB/s
Min Avg Max
10.4 4K Read 21.1 30.6
21 4K Write 49.8 84.9
11.4 4K Mixed 21.1 29.3
85.3% 30.7 MB/s
Min Avg Max
166 DQ Read 307 371
45.5 DQ Write 155 255
47.3 DQ Mixed 69.8 81.9
94.8% 177 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
127GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 245 242 242 246 246 245 MB/s
Read 469
Write 263
Mixed 185
SusWrite 244
64% 290 MB/s
4K Read 27.1
4K Write 65.7
4K Mixed 26.7
110% 39.8 MB/s
DQ Read 369
DQ Write 252
DQ Mixed 80.7
122% 234 MB/s
214GB free
Firmware: EXT25D0Q
SusWrite @10s intervals: 251 252 252 251 251 252 MB/s
Read 502
Write 256
Mixed 216
SusWrite 251
68% 307 MB/s
4K Read 28.9
4K Write 90.8
4K Mixed 29.6
130% 49.8 MB/s
DQ Read 28.2
DQ Write 84
DQ Mixed 29.4
30% 47.2 MB/s
152GB free (System drive)
Firmware: EXT23D0Q
SusWrite @10s intervals: 183 201 235 225 255 253 MB/s
Read 390
Write 210
Mixed 156
SusWrite 226
54% 245 MB/s
4K Read 25.3
4K Write 51.2
4K Mixed 22.4
94% 33 MB/s
DQ Read 369
DQ Write 206
DQ Mixed 82.9
116% 219 MB/s
217GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 187 170 223 223 226 227 MB/s
Read 427
Write 232
Mixed 166
SusWrite 209
57% 258 MB/s
4K Read 20.8
4K Write 58.6
4K Mixed 21.5
90% 33.6 MB/s
DQ Read 345
DQ Write 237
DQ Mixed 75.9
115% 219 MB/s
64GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 75 65 66 79 72 72 MB/s
Read 413
Write 72.7
Mixed 106
SusWrite 71.4
36% 166 MB/s
4K Read 13.4
4K Write 35.9
4K Mixed 19.6
64% 23 MB/s
DQ Read 358
DQ Write 59.2
DQ Mixed 63.4
84% 160 MB/s
154GB free (System drive)
Firmware: EXT23D0Q
SusWrite @10s intervals: 208 108 170 153 174 174 MB/s
Read 350
Write 236
Mixed 153
SusWrite 164
50% 226 MB/s
4K Read 13
4K Write 11.2
4K Mixed 12.6
42% 12.3 MB/s
DQ Read 330
DQ Write 236
DQ Mixed 60.3
105% 209 MB/s
1,831 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,050,992 SSDs tested.

Typical PM851 M.2 2280 256GB Builds (Compare 689 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 7%
Tree trunk
Desktop
Desktop 52%
Yacht
Workstation
Workstation 6%
Tree trunk

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.

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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) September 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 i5-11600K $270Nvidia RTX 3060-Ti $400Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3070 $500Samsung 850 Evo 120GB $183
Intel Core i7-11700K $346Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $77SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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