Average Bench: 70.5% (596th of 1018)

Based on 324 user benchmarks.  Model: SAMSUNG SSD PM851 2.5 7mm 512GB

Good average bench

The Samsung PM851 2.5 7mm 512GB averaged 29.5% 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 23.4MB/s
Avg. 4K-64Thread Read Speed 273MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 512GB is 49.8%. This is a relatively wide range which indicates that the Samsung PM851 2.5 7mm 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 219MB/s
Avg. Sustained Write Speed 237MB/s
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Average Bench

(Based on 324 samples)
Min Avg Max
331 Read 453 515
46.1 Write 261 418
82.9 Mixed 219 409
49.8 SusWrite 237 412
65.1% 293 MB/s
Min Avg Max
14.1 4K Read 23.4 32.5
27.8 4K Write 54.3 87
11.7 4K Mixed 21.3 33
91.5% 33 MB/s
Min Avg Max
24.8 DQ Read 273 373
47.1 DQ Write 154 223
13.5 DQ Mixed 56.9 91.9
84.2% 161 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
372GB free (System drive)
Firmware: EXT08D0Q
SusWrite @10s intervals: 407 409 403 419 418 393 MB/s
Read 458
Write 422
Mixed 185
SusWrite 408
83% 368 MB/s
4K Read 22.7
4K Write 52.8
4K Mixed 26.7
97% 34.1 MB/s
DQ Read 375
DQ Write 221
DQ Mixed 94.9
125% 230 MB/s
425GB free (System drive)
Firmware: EXT07D0Q
SusWrite @10s intervals: 313 403 418 416 418 415 MB/s
Read 433
Write 411
Mixed 178
SusWrite 397
80% 355 MB/s
4K Read 18.3
4K Write 54.8
4K Mixed 27
91% 33.4 MB/s
DQ Read 312
DQ Write 222
DQ Mixed 88.5
114% 207 MB/s
412GB free (System drive)
Firmware: EXT07D0Q
SusWrite @10s intervals: 242 235 227 164 236 269 MB/s
Read 385
Write 357
Mixed 149
SusWrite 229
62% 280 MB/s
4K Read 20.6
4K Write 63.2
4K Mixed 28
100% 37.3 MB/s
DQ Read 366
DQ Write 196
DQ Mixed 86.6
116% 216 MB/s
74GB free (System drive)
Firmware: EXT07D0Q
SusWrite @10s intervals: 37 39 35 27 23 22 MB/s
Read 332
Write 56.2
Mixed 72.8
SusWrite 30.4
26% 123 MB/s
4K Read 17.9
4K Write 36.1
4K Mixed 25.9
79% 26.6 MB/s
DQ Read 370
DQ Write 34.8
DQ Mixed 38.7
70% 148 MB/s
324 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 24,031,238 SSDs tested.

Typical PM851 2.5 7mm 512GB Builds (Compare 3,526 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 90%
Aircraft carrier
Desktop
Desktop 66%
Battle cruiser
Workstation
Workstation 58%
Gunboat

System: Alienware Area-51 R2

EDIT WITH CUSTOM PC BUILDER Value: 56% - Above average Total price: $720

Popular PM851 2.5 7mm 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.
  • - 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) April 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

1018 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 $146Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9600K $210Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $356Nvidia RTX 2070S (Super) $505Samsung 850 Pro 512GB $249
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $42Corsair Vengeance LPX DDR4 3200 C16 2x8GB $78SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Ultra Fit 32GB $16
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