Average Bench: 64.2% (682nd of 1017)

Based on 317 user benchmarks.  Model: SAMSUNG SSD PM851 M.2 2280 512GB

Above average average bench

The Samsung PM851 M.2 2280 512GB averaged 35.7% 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 Random Read Speed 21.9MB/s
Avg. Sequential Read Speed 452MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 M.2 2280 512GB is 43.8%. 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. Sustained Write Speed 196MB/s
Avg. Sequential Mixed IO Speed 218MB/s
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Average Bench

(Based on 317 samples)
Min Avg Max
330 Read 452 508
46.5 Write 225 360
75.9 Mixed 218 376
47.7 SusWrite 196 347
60.4% 273 MB/s
Min Avg Max
11.5 4K Read 21.9 29
16.4 4K Write 50.2 81.5
9.44 4K Mixed 18.1 30.7
83% 30.1 MB/s
Min Avg Max
19.5 DQ Read 219 367
36.9 DQ Write 137 220
10.7 DQ Mixed 48 88.8
70.8% 135 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
93GB free
Firmware: EXT25D0Q
SusWrite @10s intervals: 272 325 322 328 330 330 MB/s
Read 489
Write 328
Mixed 168
SusWrite 318
72% 325 MB/s
4K Read 27
4K Write 61.9
4K Mixed 29.3
111% 39.4 MB/s
DQ Read 31
DQ Write 96.5
DQ Mixed 32.3
34% 53.3 MB/s
136GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 156 247 187 153 171 189 MB/s
Read 452
Write 95.5
Mixed 83
SusWrite 184
44% 204 MB/s
4K Read 19.5
4K Write 84
4K Mixed 21.7
102% 41.7 MB/s
DQ Read 304
DQ Write 81.4
DQ Mixed 83.2
90% 156 MB/s
132GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 85 70 56 53 87 107 MB/s
Read 416
Write 83.8
Mixed 93
SusWrite 76.3
36% 167 MB/s
4K Read 26.6
4K Write 57.2
4K Mixed 31.4
111% 38.4 MB/s
DQ Read 298
DQ Write 73.9
DQ Mixed 71.1
82% 148 MB/s
93GB free
Firmware: EXT25D0Q
SusWrite @10s intervals: 256 270 265 248 312 325 MB/s
Read 375
Write 309
Mixed 159
SusWrite 279
63% 281 MB/s
4K Read 18.7
4K Write 42.2
4K Mixed 18.8
75% 26.6 MB/s
DQ Read 26
DQ Write 67.6
DQ Mixed 28.3
27% 40.6 MB/s
201GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 59 56 62 59 70 67 MB/s
Read 360
Write 67.5
Mixed 95
SusWrite 62.2
32% 146 MB/s
4K Read 18.3
4K Write 38.6
4K Mixed 17.1
70% 24.7 MB/s
DQ Read 345
DQ Write 66.8
DQ Mixed 66.6
85% 159 MB/s
201GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 12 4 2.2 4.1 5.8 9.9 MB/s
Read 293
Write 24
Mixed 80.3
SusWrite 6.3
22% 101 MB/s
4K Read 12.1
4K Write 15.7
4K Mixed 18.9
51% 15.6 MB/s
DQ Read 330
DQ Write 53.5
DQ Mixed 53.8
75% 146 MB/s
317 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 22,743,598 SSDs tested.

Typical PM851 M.2 2280 512GB Builds (Compare 1,333 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 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.

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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.
  • - 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) February 2020 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

1017 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 $150Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $210Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $356Nvidia GTX 1050-Ti $155Samsung 850 Pro 512GB $249
HDDRAMUSB
Seagate Barracuda 1TB (2016) $36Corsair Vengeance LPX DDR4 3200 C16 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $656SanDisk Extreme 16GB $24
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