Average Bench: 83.2% (210th of 927)

Based on 590 user benchmarks.  Model: PLEXTOR PX-256M6S

Very good average bench

The Plextor M6S 256GB averaged just 16.8% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Plextor M6S 256GB near the top of the comparison list.


Avg. 4K Random Read Speed 27.9MB/s
Avg. 4K Random Write Speed 63.3MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Plextor M6S 256GB is 47.1%. This is a relatively wide range which indicates that the Plextor M6S 256GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Read Speed 178MB/s
Avg. 4K-64Thread Mixed IO Speed 56.3MB/s

Average Bench

(Based on 590 samples)
Min Avg Max
349 Read 455 484
272 Write 390 427
262 Mixed 408 443
93.1% 418 MB/s
Min Avg Max
19 4K Read 27.9 35.4
32.6 4K Write 63.3 91.3
12.1 4K Mixed 26 38.3
109% 39.1 MB/s
Min Avg Max
23.6 DQ Read 178 361
52.3 DQ Write 189 315
12.1 DQ Mixed 56.3 89.2
77.4% 141 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
82GB free
Firmware: 1.07 Max speed: SATA 3.0 600 MB/s
Read 482
Write 428
Mixed 430
100% 446 MB/s
4K Read 28.5
4K Write 51.4
4K Mixed 32.7
112% 37.5 MB/s
DQ Read 357
DQ Write 309
DQ Mixed 90.1
134% 252 MB/s
75GB free
Firmware: 1.03 Max speed: SATA 3.0 600 MB/s
Read 471
Write 405
Mixed 429
97% 435 MB/s
4K Read 32
4K Write 63.1
4K Mixed 33.9
125% 43 MB/s
DQ Read 255
DQ Write 188
DQ Mixed 77.1
97% 173 MB/s
238GB free
Firmware: 1.09 Max speed: SATA 3.0 600 MB/s
Read 484
Write 423
Mixed 439
100% 449 MB/s
4K Read 26.8
4K Write 81.5
4K Mixed 20.9
110% 43.1 MB/s
DQ Read 31.5
DQ Write 170
DQ Mixed 57.1
57% 86.3 MB/s
49GB free
Firmware: 1.03 Max speed: SATA 3.0 600 MB/s
Read 467
Write 416
Mixed 381
94% 422 MB/s
4K Read 19.7
4K Write 38.5
4K Mixed 25.5
83% 27.9 MB/s
DQ Read 204
DQ Write 161
DQ Mixed 79.3
87% 148 MB/s
590 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,826,358 SSDs tested.


Approx. $109 @ launch in Apr '14
AmazonUS $1668 months
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Typical M6S 256GB Builds (Compare 7,072 builds) See popular component choices, score breakdowns and rankings.
Gaming 14%
Tree trunk
Desktop 55%
Workstation 38%
Jet ski

System: Lenovo 20378

EDIT WITH CUSTOM PC BUILDER Value: 56% - Above average Total price: $166

Popular M6S 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.

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How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
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  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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Solid State Drive Rankings (Price vs Performance) May 2018 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]


Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


Controller: Marvell 88SS9188-BOM2. NAND Memory: Toshiba 19nm Toggle Mode MLC.

Special power saving design....

Added 2 years ago.

927 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.
Intel Core i7-8700K $320Nvidia GTX 1070 $447Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $172Nvidia GTX 1060-6GB $280Samsung 850 Evo 500GB $136
Intel Core i7-7700K $285AMD RX 480 $300Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $961SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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