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A400

NVMe SanDisk 256GB

▲ 500 ▼

Release date ≈ Q3 2017.

Average Bench: 119% (192nd of 1072)

Based on 447 user benchmarks.  Model: A400 NVMe SanDisk 256GB
Poor: 80%Average: 119% Great: 145%

Popular builds with this SSD

Outstanding average bench

The A400 NVMe SanDisk 256GB averaged 18.6% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the A400 NVMe SanDisk 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 291MB/s
Avg. 4K-64Thread Read Speed 545MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the A400 NVMe SanDisk 256GB is 65%. This is a particularly wide range which indicates that the A400 NVMe SanDisk 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 184MB/s
Avg. Sequential Mixed IO Speed 388MB/s
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Average Bench

(Based on 447 samples)
Rank 192119%
Min Avg Max
501 Read 938 1,474
219 Write 451 681
206 Mixed 388 689
95 SusWrite 184 226
108% 490 MB/s
Min Avg Max
15.6 4K Read 34.1 44.1
43.9 4K Write 93.5 129
15.1 4K Mixed 38.3 57.1
150% 55.3 MB/s
Min Avg Max
39.3 DQ Read 545 665
102 DQ Write 423 526
15.2 DQ Mixed 291 395
270% 420 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
208GB free (System drive)
Firmware: A3550012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 218 206 205 205 207 204 MB/s
127% Outstanding
Read 974
Write 405
Mixed 432
SusWrite 207
111% 505 MB/s
4K Read 37
4K Write 87.2
4K Mixed 47.9
164% 57.4 MB/s
DQ Read 657
DQ Write 472
DQ Mixed 259
276% 462 MB/s
172GB free
Firmware: A3550012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 317 223 215 201 215 183 MB/s
121% Outstanding
Read 924
Write 679
Mixed 560
SusWrite 226
133% 597 MB/s
4K Read 34.5
4K Write 71.1
4K Mixed 42.9
145% 49.5 MB/s
DQ Read 638
DQ Write 480
DQ Mixed 393
339% 504 MB/s
196GB free (System drive)
Firmware: A3550012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 241 174 197 195 159 193 MB/s
115% Outstanding
Read 912
Write 458
Mixed 337
SusWrite 193
105% 475 MB/s
4K Read 28.4
4K Write 75.8
4K Mixed 44.2
140% 49.5 MB/s
DQ Read 597
DQ Write 420
DQ Mixed 365
311% 461 MB/s
207GB free (System drive)
Firmware: A3550012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 215 189 182 179 178 180 MB/s
100% Outstanding
Read 574
Write 668
Mixed 482
SusWrite 187
107% 478 MB/s
4K Read 38.9
4K Write 78.4
4K Mixed 32.1
142% 49.8 MB/s
DQ Read 611
DQ Write 450
DQ Mixed 371
321% 477 MB/s
182GB free (System drive)
Firmware: A3550012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 221 209 203 155 199 181 MB/s
63% Good
Read 513
Write 319
Mixed 251
SusWrite 195
71% 320 MB/s
4K Read 22.4
4K Write 31.6
4K Mixed 24.1
82% 26 MB/s
DQ Read 144
DQ Write 90.2
DQ Mixed 118
87% 117 MB/s
18GB free (System drive)
Firmware: A3550012 Max speed: PCIe 16,000 MB/s
SusWrite @10s intervals: 131 51 33 33 31 39 MB/s
61.1% Good
Read 432
Write 222
Mixed 164
SusWrite 53
48% 218 MB/s
4K Read 27.6
4K Write 69.7
4K Mixed 10.3
92% 35.9 MB/s
DQ Read 516
DQ Write 141
DQ Mixed 52.7
111% 237 MB/s
447 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,664,589 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 NVMe SanDisk 256GB Builds (Compare 1,991 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 49%
Yacht
Desktop
Desktop 71%
Battleship
Workstation
Workstation 41%
Speed boat

System: Alienware 15 R3

CPU
Core i7-7700HQIntelBench 62%, 473,208 samples1,108x
Core i7-6700HQIntelBench 59%, 320,434 samples368x
Core i7-7820HKIntelBench 72%, 18,903 samples242x
GPU
GTX 1070 (Mobile)NvidiaBench 72%, 73,882 samples950x
GTX 1060 (Mobile)NvidiaBench 47%, 177,775 samples622x
HD 530 (Mobile Skylake)IntelBench 5%, 213,495 samples175x
SSD
NVMe SanDisk 256GBA400Bench 119%, 447 samples1x
RAM
HMA81GS6AFR8N-UH 2x8GBUnknownBench 70%, 27,567 samples547x
HMA82GS6AFR8N-UH 2x16GBUnknownBench 75%, 4,851 samples110x
8ATF1G64HZ-2G3H1 2x8GBUnknownBench 70%, 2,972 samples100x
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Popular NVMe SanDisk 256GB systems:

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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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
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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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Speed Comparisons

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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?
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ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair 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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