Average Bench: 78.4% (476th of 1037)

Based on 354 user benchmarks.  Model: PLEXTOR PX-256M5M

The Plextor M5M is the most recent mSATA SSD I have looked at. It has both the same controller and NAND flash (albeit with fewer channels) as its regular SATA sibling, the excellent M5 Pro. The performance figures for the M5M lag the top nine SATA group leaders by around 30% on average. The weakest area of core performance is shallow queue 4K write speed which clocks in at 57 MBps on the M5M vs a group average of 118 MBps. In terms of server orientated performance, the M5M takes 13th place out of 29 with an AS SSD total score of 946. That said it's only fair to look at the M5M within the context of other mSATA SSDs. It's not a clear cut performance win between the M5M and the Intel 525 Series but the M5M is retailing for 23% less. Unless shallow queue random writes are a top priority for your use case the M5M is the clear value winner, and my top mSATA pick for 2013. [Oct '13 SSDrivePro]

Good average bench

The Plextor M5M mSATA 256GB averaged 21.5% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Plextor M5M mSATA 256GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 109MB/s
Avg. 4K Random Read Speed 23.7MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Plextor M5M mSATA 256GB is 37.4%. This is a relatively wide range which indicates that the Plextor M5M mSATA 256GB performs inconsistently under varying real world conditions.


Avg. 4K Random Write Speed 47.7MB/s
Avg. 4K-64Thread Read Speed 204MB/s

Average Bench

(Based on 354 samples)
Min Avg Max
373 Read 463 502
291 Write 370 411
229 Mixed 358 446
260 SusWrite 340 378
85.9% 383 MB/s
Min Avg Max
14.7 4K Read 23.7 31.5
24.7 4K Write 47.7 75.2
10.3 4K Mixed 24.3 36.4
92.4% 31.9 MB/s
Min Avg Max
19.3 DQ Read 204 306
39.4 DQ Write 210 300
9.97 DQ Mixed 109 219
109% 174 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
31GB free
Firmware: 1.01
SusWrite @10s intervals: 378 380 383 347 385 385 MB/s
Read 498
Write 385
Mixed 271
SusWrite 376
86% 383 MB/s
4K Read 30.8
4K Write 66.8
4K Mixed 36.3
128% 44.6 MB/s
DQ Read 226
DQ Write 170
DQ Mixed 139
120% 178 MB/s
62GB free (System drive)
Firmware: 1.04
SusWrite @10s intervals: 340 337 224 366 368 345 MB/s
Read 450
Write 368
Mixed 276
SusWrite 330
80% 356 MB/s
4K Read 25.1
4K Write 33.5
4K Mixed 26.4
90% 28.3 MB/s
DQ Read 303
DQ Write 289
DQ Mixed 214
183% 269 MB/s
40GB free
Firmware: 1.03
SusWrite @10s intervals: 358 365 364 361 365 359 MB/s
Read 455
Write 337
Mixed 253
SusWrite 362
79% 352 MB/s
4K Read 21.6
4K Write 36.1
4K Mixed 22.5
81% 26.7 MB/s
DQ Read 306
DQ Write 295
DQ Mixed 213
184% 271 MB/s
26GB free
Firmware: 1.03
SusWrite @10s intervals: 283 307 332 295 303 303 MB/s
Read 342
Write 295
Mixed 132
SusWrite 304
60% 268 MB/s
4K Read 4.8
4K Write 37.3
4K Mixed 20.3
53% 20.8 MB/s
DQ Read 298
DQ Write 278
DQ Mixed 201
175% 259 MB/s
354 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 31,585,560 SSDs tested.


Approx. $216 @ launch in Apr '13
AmazonUS $2406 years
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Typical M5M mSATA 256GB Builds (Compare 249 builds) See popular component choices, score breakdowns and rankings.
Gaming 5%
Tree trunk
Desktop 61%
Workstation 5%
Tree trunk

Motherboard: MSI MS-16GC

EDIT WITH CUSTOM PC BUILDER Value: 36% - Below average Total price: $449

Popular M5M mSATA 256GB compatible motherboards:

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Solid State Drive Rankings (Price vs Performance) September 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]


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.


Controller: Marvell 88SS9187-BLD2. Flash Memory: Toshiba 19nm Toggle Mode MLC

A compact size with a big performance...

Added 6 years ago.

Above average

6 years ago.

Review  www.thessdreview.com/...

Review  www.cdrlabs.com/...

Image  www.cdrlabs.com/...
Jun '13 AS SSD Benchmark Score

Jun '13 AS SSD Benchmark Score


5 years ago.

Good device. Very good speed. I use it on my Lenovo Y580 laptop.

1037 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.

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