Average Bench: 84.5% (162nd of 908)

Based on 1,025 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 15.5% 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 84.6MB/s
Avg. 4K Random Mixed IO Speed 30.1MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Toshiba Q Series Pro 128GB is 54%. 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 171MB/s
Avg. 4K-64Thread Write Speed 183MB/s

Average Bench

(Based on 1,025 samples)
Min Avg Max
379 Read 492 520
106 Write 382 480
194 Mixed 416 502
95.7% 430 MB/s
Min Avg Max
14.7 4K Read 21.5 27.3
37.7 4K Write 71.1 107
14.6 4K Mixed 30.1 43.8
109% 40.9 MB/s
Min Avg Max
17.5 DQ Read 171 327
58.3 DQ Write 183 307
14.8 DQ Mixed 84.6 197
89.2% 146 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
13GB free
Firmware: JTRA0102 Max speed: SATA 3.0 600 MB/s
Read 454
Write 477
Mixed 497
107% 476 MB/s
4K Read 27.2
4K Write 97.4
4K Mixed 42.1
147% 55.6 MB/s
DQ Read 322
DQ Write 292
DQ Mixed 192
176% 269 MB/s
91GB free
Firmware: JTRA0102 Max speed: SATA 3.0 600 MB/s
Read 518
Write 479
Mixed 502
112% 500 MB/s
4K Read 26.7
4K Write 77.3
4K Mixed 41.8
135% 48.6 MB/s
DQ Read 309
DQ Write 234
DQ Mixed 131
136% 225 MB/s
68GB free
Firmware: JTRA0102 Max speed: SATA 3.0 600 MB/s
Read 505
Write 460
Mixed 482
108% 482 MB/s
4K Read 24.9
4K Write 68.1
4K Mixed 38
122% 43.7 MB/s
DQ Read 207
DQ Write 158
DQ Mixed 96.9
96% 154 MB/s
43GB free
Firmware: JTRA0102 Max speed: SATA 3.0 600 MB/s
Read 495
Write 457
Mixed 495
108% 482 MB/s
4K Read 16.5
4K Write 35.9
4K Mixed 15.1
64% 22.5 MB/s
DQ Read 19.4
DQ Write 40.5
DQ Mixed 14.4
15% 24.8 MB/s
1,025 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,041,555 SSDs tested.


Approx. $112 @ launch in Oct '13
AmazonUS HDTS312XZSTA $11020 days
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Typical Q Series Pro 128GB Builds (Compare 7,660 builds) See popular component choices, score breakdowns and rankings.
Gaming 118%
Desktop 84%
Aircraft carrier
Workstation 99%
Nuclear submarine

Motherboard: Asus CROSSHAIR VI HERO - $227

EDIT WITH CUSTOM PC BUILDER Value: 83% - Excellent Total price: $1,673

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.

UserBenchmark of the month

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.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) March 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: Toshiba TC358790XBG. NAND Memory: Toshiba 19mn MLC.

Drive faster, play harder...


Added 4 years ago.

Good (edit your comment) Add link

9 months 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.


4 years ago.

908 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

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