Average Bench: 192% (76th of 1011)

Based on 1,853 user benchmarks.  Models: NVMe TOSHIBA-RD400, TOSHIBA-RD400

Outstanding average bench

The Toshiba OCZ RD400 NVMe PCIe M.2 512GB averaged 91.8% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Toshiba OCZ RD400 NVMe PCIe M.2 512GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 605MB/s
Avg. 4K-64Thread Read Speed 883MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Toshiba OCZ RD400 NVMe PCIe M.2 512GB is 145%. This is a particularly wide range which indicates that the Toshiba OCZ RD400 NVMe PCIe M.2 512GB performs inconsistently under varying real world conditions.


Avg. 4K Random Read Speed 38.9MB/s
Avg. Sustained Write Speed 854MB/s

Average Bench

(Based on 1,853 samples)
Min Avg Max
591 Read 1,145 1,545
257 Write 974 1,420
565 Mixed 855 1,008
189 SusWrite 854 1,471
215% 957 MB/s
Min Avg Max
21.6 4K Read 38.9 47.4
67.9 4K Write 125 174
28.1 4K Mixed 55.3 69.6
196% 73.1 MB/s
Min Avg Max
471 DQ Read 883 1,010
233 DQ Write 642 777
241 DQ Mixed 605 774
495% 710 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
280GB free (System drive)
Firmware: 57CZ4102 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 534 696 1056 1014 983 1044 MB/s
Read 1,547
Write 1,510
Mixed 1,023
SusWrite 888
278% 1,242 MB/s
4K Read 27.9
4K Write 157
4K Mixed 68.9
214% 84.5 MB/s
DQ Read 1,010
DQ Write 790
DQ Mixed 640
550% 813 MB/s
120GB free (System drive)
Firmware: 57CZ4102 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 1026 758 963 846 865 798 MB/s
Read 1,129
Write 1,103
Mixed 892
SusWrite 876
225% 1,000 MB/s
4K Read 27.7
4K Write 133
4K Mixed 61.6
191% 74 MB/s
DQ Read 1,000
DQ Write 711
DQ Mixed 548
493% 753 MB/s
193GB free (System drive)
Firmware: 57CZ4102 Max speed: PCIe 5,000 MB/s
SusWrite @10s intervals: 766 654 506 437 395 486 MB/s
Read 763
Write 888
Mixed 716
SusWrite 541
164% 727 MB/s
4K Read 25.7
4K Write 51.9
4K Mixed 28.4
103% 35.3 MB/s
DQ Read 620
DQ Write 459
DQ Mixed 527
397% 535 MB/s
1,853 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,132,121 SSDs tested.


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Typical OCZ RD400 NVMe PCIe M.2 512GB Builds (Compare 17,973 builds) See popular component choices, score breakdowns and rankings.
Gaming 106%
Desktop 91%
Nuclear submarine
Workstation 90%
Nuclear submarine

Motherboard: Asus CROSSHAIR VI HERO - $168

EDIT WITH CUSTOM PC BUILDER Value: 47% - Average Total price: $1,444

Popular OCZ RD400 NVMe PCIe M.2 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.

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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 userbenchmark.com.
  • - 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) November 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.


1011 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 i5-9400F $148Nvidia GTX 1660S (Super) $234Crucial MX500 250GB $45
Intel Core i5-9600K $210Nvidia GTX 1660 $210Samsung 850 Evo 120GB $150
Intel Core i7-9700K $340Nvidia GTX 1660-Ti $260Samsung 860 Evo 250GB $49
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Ultra Fit 32GB $14
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