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Sandisk

A400 SD9QN9U-512G-1006 512GB

▲ 500 ▼

Release date ≈ Q2 2017.

Average Bench: 142% (167th of 1072)

Based on 12 user benchmarks.  Model: SanDisk A400 SD9QN9U-512G-1006
Poor: 132%Average: 142% Great: 153%

Popular builds with this SSD

Outstanding average bench

The Sandisk A400 SD9QN9U-512G-1006 512GB averaged 41.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Sandisk A400 SD9QN9U-512G-1006 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 396MB/s
Avg. 4K-64Thread Read Speed 624MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Sandisk A400 SD9QN9U-512G-1006 512GB is 21.4%. This is a relatively narrow range which indicates that the Sandisk A400 SD9QN9U-512G-1006 512GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 342MB/s
Avg. Sequential Mixed IO Speed 537MB/s
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Average Bench

(Based on 12 samples)
Rank 167142%
Min Avg Max
716 Read 1,053 1,488
378 Write 654 778
346 Mixed 537 722
116 SusWrite 342 382
143% 646 MB/s
Min Avg Max
28.5 4K Read 37.7 43.8
100 4K Write 114 134
21.6 4K Mixed 47.2 57.6
178% 66.3 MB/s
Min Avg Max
479 DQ Read 624 670
195 DQ Write 448 522
66.9 DQ Mixed 396 486
334% 489 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
472GB free
Firmware: A3200006
SusWrite @10s intervals: 508 342 314 366 322 367 MB/s
153% Outstanding
Read 1085
Write 770
Mixed 667
SusWrite 370
161% 723 MB/s
4K Read 42.7
4K Write 114
4K Mixed 56
197% 71.1 MB/s
DQ Read 664
DQ Write 522
DQ Mixed 448
375% 544 MB/s
472GB free
Firmware: A3200006
SusWrite @10s intervals: 548 365 350 359 345 329 MB/s
153% Outstanding
Read 1,045
Write 778
Mixed 652
SusWrite 382
159% 714 MB/s
4K Read 42.4
4K Write 116
4K Mixed 56.8
198% 71.7 MB/s
DQ Read 662
DQ Write 522
DQ Mixed 447
374% 544 MB/s
476GB free
Firmware: A3200006
SusWrite @10s intervals: 595 336 343 318 336 321 MB/s
145% Outstanding
Read 986
Write 763
Mixed 631
SusWrite 375
154% 689 MB/s
4K Read 39.6
4K Write 106
4K Mixed 52.6
184% 66.2 MB/s
DQ Read 660
DQ Write 516
DQ Mixed 447
373% 541 MB/s
440GB free
Firmware: A3200006
SusWrite @10s intervals: 405 342 368 368 340 340 MB/s
142% Outstanding
Read 1,016
Write 756
Mixed 463
SusWrite 360
144% 649 MB/s
4K Read 33.6
4K Write 107
4K Mixed 54.8
178% 65.3 MB/s
DQ Read 624
DQ Write 452
DQ Mixed 479
374% 518 MB/s
445GB free
Firmware: A3200006
SusWrite @10s intervals: 390 345 350 340 313 367 MB/s
136% Outstanding
Read 1,081
Write 771
Mixed 529
SusWrite 351
152% 683 MB/s
4K Read 40.3
4K Write 104
4K Mixed 32.4
158% 58.8 MB/s
DQ Read 664
DQ Write 435
DQ Mixed 445
360% 514 MB/s
12 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,722,615 SSDs tested

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical A400 SD9QN9U-512G-1006 512GB Builds (Compare 2,283 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 90%
Nuclear submarine
Workstation
Workstation 75%
Battleship

Motherboard: MSI Z270 PC MATE (MS-7A72)

CPU
Core i7-7700KIntel  $230Bench 84%, 712,312 samples1,172x
Core i5-7600KIntel  $190Bench 76%, 195,006 samples337x
Core i7-7700Intel  $167Bench 76%, 256,717 samples244x
GPU
GTX 1080Nvidia  $400Bench 102%, 1,082,454 samples565x
GTX 1070Nvidia  $132Bench 80%, 1,459,281 samples270x
GTX 1060-6GBNvidia  $117Bench 56%, 1,368,019 samples255x
SSD
A400 SD9QN9U-512G-1006 512GBSandiskBench 142%, 12 samples1x
RAM
DDR4 2400 2OZ 2x8GBUnknownBench 72%, 21,822 samples213x
HyperX 2400 C15 2x8GBKingstonBench 76%, 122,822 samples121x
Vengeance LPX DDR4 3000 C15 2x8GBCorsair  $43Bench 82%, 606,405 samples66x
EDIT WITH CUSTOM PC BUILDER Value: 71% - Very good Total price: $630

Popular A400 SD9QN9U-512G-1006 512GB compatible motherboards:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our 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 value for money upgrades.

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Gaming Desktop ProGaming

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
  • - SkillBench (space shooter) tests user input accuracy
  • - 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
Solid State Drive Rankings (Price vs Performance) April 2024 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]

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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.

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1072 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

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $295Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $177Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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