HG5d Q Series 512GB

Average Bench: 83.4% (334th of 992)

Based on 256 user benchmarks.  Models: TOSHIBA THNSNH512GBST, TOSHIBA THNSNH51

Very good average bench

The Toshiba HG5d Q Series 512GB averaged just 16.5% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Toshiba HG5d Q Series 512GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 140MB/s
Avg. 4K Random Mixed IO Speed 30.2MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Toshiba HG5d Q Series 512GB is 53.6%. This is a relatively wide range which indicates that the Toshiba HG5d Q Series 512GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 304MB/s
Avg. 4K-64Thread Read Speed 231MB/s

Average Bench

(Based on 256 samples)
Min Avg Max
359 Read 473 514
110 Write 378 486
216 Mixed 407 504
111 SusWrite 304 462
87.7% 390 MB/s
Min Avg Max
14.3 4K Read 20.3 26.6
28.4 4K Write 64.2 104
13.9 4K Mixed 30.2 44
104% 38.2 MB/s
Min Avg Max
19.8 DQ Read 231 364
51.4 DQ Write 209 332
14.1 DQ Mixed 140 344
127% 194 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
108GB free (System drive)
Firmware: HTRAN101
SusWrite @10s intervals: 275 330 361 299 157 446 MB/s
Read 491
Write 453
Mixed 448
SusWrite 311
96% 426 MB/s
4K Read 25
4K Write 103
4K Mixed 36.5
139% 54.9 MB/s
DQ Read 307
DQ Write 285
DQ Mixed 286
218% 293 MB/s
285GB free (System drive)
Firmware: HTRAN101
SusWrite @10s intervals: 332 225 109 120 280 335 MB/s
Read 430
Write 391
Mixed 397
SusWrite 234
82% 363 MB/s
4K Read 22.2
4K Write 79.1
4K Mixed 40.6
128% 47.3 MB/s
DQ Read 340
DQ Write 59
DQ Mixed 284
186% 228 MB/s
256 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 13,030,033 SSDs tested.

Typical HG5d Q Series 512GB Builds (Compare 1,136 builds) See popular component choices, score breakdowns and rankings.
Gaming 64%
Desktop 62%
Workstation 38%
Jet ski

Motherboard: Asus P8P67-M - $150

EDIT WITH CUSTOM PC BUILDER Value: 85% - Excellent Total price: $626

Popular HG5d Q Series 512GB 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.
  • - 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
  • - 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) March 2019 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: Toshiba TC58NC5HA9GST. NAND Memory: Toshiba Asynchronous 19mn MLC

Added n/a ago.
992 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 $370Nvidia GTX 1070 $370Samsung 850 Evo 250GB $75
AMD Ryzen 5 1600 $122Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $105
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $97
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $105SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $716SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $110SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback