Average Bench: 81.4% (166th of 850)

Based on 619 user benchmarks.  Models: TOSHIBA THNSNJ128GCST, TOSHIBA THNSNJ128GCS

At four months old, the 128GB Toshiba Q Series Pro is the newest SSD in the group test. It's always nice to see new drives pushing established speed boundaries and the Q Series Pro does exactly that. With peak and average sequential read/write speeds of 521/481 and 422/333 MB/s the Q Series Pro beats the 128GB group average peak write speed by 45% and is bested only by the Samsung Evo. A particularly impressive aspect of the Q Series Pro's performance profile is its mixed IO performance where it beats the average of the group leaders by a stunning 50% and sets new sequential/4k mixed IO records of 502/40.4 MB/s. The ability to handle concurrent read and write operations well means that the Q Series Pro will rarely pause for breath, even when faced with varying IO demands, a great server orientated trait. Overall the Q Series Pro has a very robust performance profile and is well priced making it one of the top 128GB SSDs of 2014. [Feb '14 SSDrivePro]


Very good average bench

The Toshiba Q Series Pro 128GB averaged just 18.5% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Toshiba Q Series Pro 128GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 79.7MB/s
Avg. 4K Random Write Speed 68.9MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Toshiba Q Series Pro 128GB is 52.9%. This is a relatively wide range which indicates that the Toshiba Q Series Pro 128GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Read Speed 143MB/s
Avg. 4K-64Thread Write Speed 171MB/s

Average Bench

(Based on 619 samples)
Min Avg Max
364 Read 483 519
106 Write 375 477
189 Mixed 405 501
93.6% 421 MB/s
Min Avg Max
14.5 4K Read 21.1 27
33.6 4K Write 68.9 109
15.2 4K Mixed 28.4 44.4
105% 39.4 MB/s
Min Avg Max
19 DQ Read 143 328
54 DQ Write 171 306
15.8 DQ Mixed 79.7 209
81.6% 131 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
34GB free
Firmware: JTRA0102 Max speed: SATA 3.0 600 MB/s
Read 518
Write 479
Mixed 501
112% 499 MB/s
4K Read 28.2
4K Write 107
4K Mixed 45.3
157% 60 MB/s
DQ Read 323
DQ Write 307
DQ Mixed 217
190% 283 MB/s
51GB free
Firmware: JTRA0102 Max speed: SATA 3.0 600 MB/s
Read 502
Write 338
Mixed 244
80% 361 MB/s
4K Read 19.9
4K Write 106
4K Mixed 44.7
143% 56.7 MB/s
DQ Read 320
DQ Write 195
DQ Mixed 161
146% 225 MB/s
90GB free
Firmware: JTRA0102 Max speed: SATA 3.0 600 MB/s
Read 514
Write 479
Mixed 502
111% 498 MB/s
4K Read 19
4K Write 48.3
4K Mixed 36
100% 34.4 MB/s
DQ Read 257
DQ Write 220
DQ Mixed 122
123% 199 MB/s
61GB free
Firmware: JTRA0102 Max speed: SATA 3.0 600 MB/s
Read 521
Write 475
Mixed 500
111% 499 MB/s
4K Read 24.7
4K Write 111
4K Mixed 25.5
129% 53.8 MB/s
DQ Read 28.6
DQ Write 120
DQ Mixed 215
124% 121 MB/s
619 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,840,484 SSDs tested.


AmazonUS HDTS312XZSTA $91.0014 mins ago.
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Typical Q Series Pro 128GB Builds (Compare 93 builds) See popular component choices, score breakdowns and rankings.
Gaming 73%
Desktop 71%
Workstation 54%

Motherboard: Asus Z87-WS

EDIT WITH CUSTOM PC BUILDER Value: 64% - Good Total price: $1,041

Popular Q Series Pro 128GB compatible motherboards:

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.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
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Solid State Drive Rankings (Price vs Performance) May 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]


Controller: Toshiba TC358790XBG. NAND Memory: Toshiba 19mn MLC.

Drive faster, play harder...


Added 3 years ago.

Poor (edit your comment) Add link

1 month ago.

I own this product for over a year now and I would say that itis a bargaing in terms of speed and consistency for the money.


3 years ago.

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850 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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