Average Bench: 65.2% (724th of 1058)

Based on 440 user benchmarks.  Model: SAMSUNG SSD PM851 M.2 2280 512GB

Above average average bench

The Samsung PM851 M.2 2280 512GB averaged 34.8% 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 21.8MB/s
Avg. 4K-64Thread Read Speed 249MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 M.2 2280 512GB is 43%. This is a relatively wide range which indicates that the Samsung PM851 M.2 2280 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 199MB/s
Avg. Sustained Write Speed 205MB/s
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Average Bench

(Based on 440 samples)
Min Avg Max
322 Read 442 506
49.5 Write 226 360
78.1 Mixed 199 371
52.6 SusWrite 205 345
59.4% 268 MB/s
Min Avg Max
11.3 4K Read 21.8 28.6
19 4K Write 49.7 78.5
9.69 4K Mixed 19.6 30.2
84.6% 30.4 MB/s
Min Avg Max
20.4 DQ Read 249 370
41.3 DQ Write 143 221
11.1 DQ Mixed 56.8 89.3
79.6% 150 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
360GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 304 299 295 315 329 326 MB/s
Read 480
Write 321
Mixed 175
SusWrite 311
72% 322 MB/s
4K Read 27.2
4K Write 66.1
4K Mixed 29.4
114% 40.9 MB/s
DQ Read 362
DQ Write 204
DQ Mixed 88.8
118% 219 MB/s
361GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 224 266 299 306 327 307 MB/s
Read 470
Write 284
Mixed 158
SusWrite 288
67% 300 MB/s
4K Read 28
4K Write 65.4
4K Mixed 28.4
113% 40.6 MB/s
DQ Read 371
DQ Write 205
DQ Mixed 78.3
114% 218 MB/s
440GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 269 318 295 295 244 290 MB/s
Read 425
Write 351
Mixed 172
SusWrite 285
69% 308 MB/s
4K Read 24.4
4K Write 57.5
4K Mixed 27.5
103% 36.5 MB/s
DQ Read 366
DQ Write 193
DQ Mixed 89.7
117% 216 MB/s
385GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 259 252 277 245 299 321 MB/s
Read 450
Write 300
Mixed 159
SusWrite 275
66% 296 MB/s
4K Read 25.1
4K Write 52.4
4K Mixed 25
98% 34.2 MB/s
DQ Read 365
DQ Write 214
DQ Mixed 82.8
117% 221 MB/s
154GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 136 216 149 180 212 161 MB/s
Read 424
Write 65.8
Mixed 96.7
SusWrite 176
42% 190 MB/s
4K Read 21.2
4K Write 49.7
4K Mixed 28.6
95% 33.2 MB/s
DQ Read 362
DQ Write 51.6
DQ Mixed 53.5
78% 156 MB/s
409GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 211 125 194 176 196 209 MB/s
Read 369
Write 258
Mixed 164
SusWrite 185
54% 244 MB/s
4K Read 18.8
4K Write 41
4K Mixed 24.4
82% 28.1 MB/s
DQ Read 366
DQ Write 199
DQ Mixed 84.8
116% 217 MB/s
390GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 81 65 119 121 110 122 MB/s
Read 425
Write 72.9
Mixed 77.5
SusWrite 103
37% 170 MB/s
4K Read 21.8
4K Write 35.3
4K Mixed 21.2
79% 26.1 MB/s
DQ Read 346
DQ Write 69.5
DQ Mixed 72.4
88% 163 MB/s
440 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 47,318,861 SSDs tested.

Typical PM851 M.2 2280 512GB Builds (Compare 697 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 7%
Tree trunk
Desktop
Desktop 52%
Yacht
Workstation
Workstation 7%
Tree trunk

System: Dell XPS 13 9343

EDIT WITH CUSTOM PC BUILDER

Popular PM851 M.2 2280 512GB 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) 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 860 Evo 250GB $52
Intel Core i7-11700K $390Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk 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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