Average Bench: 69% (667th of 1058)

Based on 889 user benchmarks.  Model: SAMSUNG SSD PM851 mSATA 512GB

Above average average bench

The Samsung PM851 mSATA 512GB averaged 30.9% 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 319MB/s
Avg. 4K-64Thread Mixed IO Speed 77.5MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 mSATA 512GB is 46.7%. This is a relatively wide range which indicates that the Samsung PM851 mSATA 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 152MB/s
Avg. Sustained Write Speed 227MB/s
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Average Bench

(Based on 889 samples)
Min Avg Max
317 Read 420 491
53.2 Write 242 362
89.8 Mixed 152 193
49.1 SusWrite 227 354
57.8% 260 MB/s
Min Avg Max
11.2 4K Read 22.3 30.3
22.5 4K Write 49.7 79.3
13.7 4K Mixed 24 32.4
90.8% 32 MB/s
Min Avg Max
126 DQ Read 319 372
52 DQ Write 160 222
44 DQ Mixed 77.5 90.7
101% 185 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
433GB free (System drive)
Firmware: EXT49D0Q
SusWrite @10s intervals: 260 210 330 342 355 332 MB/s
Read 420
Write 345
Mixed 171
SusWrite 305
69% 310 MB/s
4K Read 26.9
4K Write 69.1
4K Mixed 30.1
116% 42 MB/s
DQ Read 359
DQ Write 217
DQ Mixed 83.3
117% 220 MB/s
448GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 291 316 350 341 352 341 MB/s
Read 384
Write 348
Mixed 173
SusWrite 332
69% 309 MB/s
4K Read 11.5
4K Write 28.6
4K Mixed 15.7
53% 18.6 MB/s
DQ Read 365
DQ Write 216
DQ Mixed 81.1
117% 221 MB/s
448GB free (System drive)
Firmware: EXT4AD0Q
SusWrite @10s intervals: 297 316 347 340 355 353 MB/s
Read 380
Write 353
Mixed 170
SusWrite 335
69% 309 MB/s
4K Read 11.4
4K Write 30.3
4K Mixed 15.7
53% 19.1 MB/s
DQ Read 321
DQ Write 213
DQ Mixed 83
112% 206 MB/s
89GB free (System drive)
Firmware: EXT48D0Q
SusWrite @10s intervals: 56 47 38 41 43 35 MB/s
Read 382
Write 62.8
Mixed 80.9
SusWrite 43.4
31% 142 MB/s
4K Read 14.7
4K Write 22.7
4K Mixed 18
57% 18.5 MB/s
DQ Read 154
DQ Write 55.4
DQ Mixed 50.6
52% 86.7 MB/s
889 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 51,169,951 SSDs tested.

Typical PM851 mSATA 512GB Builds (Compare 617 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 7%
Tree trunk
Desktop
Desktop 57%
Gunboat
Workstation
Workstation 7%
Tree trunk

System: Dell XPS 15 9530

EDIT WITH CUSTOM PC BUILDER

Popular PM851 mSATA 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) January 2022 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 i5-12600K $295Nvidia RTX 3060-Ti $400Crucial MX500 250GB $50
Intel Core i5-12400F $184Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i5-11600K $245Nvidia RTX 3080 $700Samsung 850 Evo 120GB $200
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $63SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $470SanDisk Ultra Fit 32GB $16
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