Average Bench: 61.4% (754th of 1040)

Based on 1,702 user benchmarks.  Model: SAMSUNG SSD PM851 M.2 2280 256GB

Above average average bench

The Samsung PM851 M.2 2280 256GB averaged 38.6% 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 301MB/s
Avg. 4K-64Thread Mixed IO Speed 67.9MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 M.2 2280 256GB is 41.2%. 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 142MB/s
Avg. Sustained Write Speed 148MB/s
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Average Bench

(Based on 1,702 samples)
Min Avg Max
312 Read 414 491
43.5 Write 165 260
70.8 Mixed 142 193
37.3 SusWrite 148 249
47.8% 217 MB/s
Min Avg Max
10.3 4K Read 21 29.4
23.3 4K Write 49.5 81.4
12.4 4K Mixed 20.9 28.6
84.8% 30.5 MB/s
Min Avg Max
111 DQ Read 301 371
43.7 DQ Write 152 255
41.8 DQ Mixed 67.9 81.9
92.7% 173 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
166GB free
Firmware: EXT25D0Q
SusWrite @10s intervals: 257 255 255 255 253 254 MB/s
Read 493
Write 256
Mixed 212
SusWrite 255
67% 304 MB/s
4K Read 35
4K Write 78
4K Mixed 31.4
135% 48.1 MB/s
DQ Read 214
DQ Write 182
DQ Mixed 73
89% 157 MB/s
178GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 197 210 217 216 224 254 MB/s
Read 454
Write 249
Mixed 154
SusWrite 220
60% 269 MB/s
4K Read 24.9
4K Write 63.6
4K Mixed 22.9
101% 37.1 MB/s
DQ Read 351
DQ Write 243
DQ Mixed 69.9
114% 221 MB/s
190GB free (System drive)
Firmware: EXT25D0Q
SusWrite @10s intervals: 234 250 237 176 254 229 MB/s
Read 477
Write 191
Mixed 153
SusWrite 230
58% 263 MB/s
4K Read 22.9
4K Write 51
4K Mixed 22.4
90% 32.1 MB/s
DQ Read 253
DQ Write 165
DQ Mixed 73.2
91% 164 MB/s
1,702 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 34,917,809 SSDs tested.

Typical PM851 M.2 2280 256GB Builds (Compare 418 builds) See popular component choices, score breakdowns and rankings.
Gaming
Gaming 7%
Tree trunk
Desktop
Desktop 53%
Yacht
Workstation
Workstation 7%
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.

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) December 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

1040 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 i5-9600K $190Nvidia RTX 3070 $500Crucial MX500 250GB $34
Intel Core i5-9400F $165Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
Intel Core i5-10600K $260Nvidia GTX 1650S (Super) $190Samsung 860 Evo 250GB $44
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $64SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $69SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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