Average Bench: 64.1% (677th of 1012)

Based on 763 user benchmarks.  Model: ADATA SP900NS38

Above average average bench

The Adata SP900NS38 256GB averaged 35.9% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Write Speed 74.1MB/s
Avg. 4K-64Thread Mixed IO Speed 74.7MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Adata SP900NS38 256GB is 27.2%. This is a relatively narrow range which indicates that the Adata SP900NS38 256GB performs reasonably consistently under varying real world conditions.


Avg. Sustained Write Speed 154MB/s
Avg. 4K-64Thread Read Speed 113MB/s

Average Bench

(Based on 763 samples)
Min Avg Max
295 Read 431 505
186 Write 226 258
219 Mixed 272 333
100 SusWrite 154 247
60.1% 271 MB/s
Min Avg Max
9.04 4K Read 20.1 28.4
36.5 4K Write 74.1 108
8.22 4K Mixed 19.1 38.4
94.2% 37.8 MB/s
Min Avg Max
20.4 DQ Read 113 176
63.9 DQ Write 186 242
7.84 DQ Mixed 74.7 188
77.7% 125 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
128GB free
Firmware: 6.0.D
SusWrite @10s intervals: 163 168 176 178 156 176 MB/s
Read 338
Write 254
Mixed 268
SusWrite 169
58% 257 MB/s
4K Read 30.9
4K Write 117
4K Mixed 42.6
163% 63.5 MB/s
DQ Read 144
DQ Write 233
DQ Mixed 149
124% 175 MB/s
171GB free (System drive)
Firmware: 6.0.9
SusWrite @10s intervals: 157 137 145 125 150 153 MB/s
Read 357
Write 233
Mixed 254
SusWrite 144
55% 247 MB/s
4K Read 25.6
4K Write 93.6
4K Mixed 38.1
137% 52.4 MB/s
DQ Read 175
DQ Write 214
DQ Mixed 191
145% 193 MB/s
763 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 20,106,612 SSDs tested.

Typical SP900NS38 256GB Builds (Compare 11,038 builds) See popular component choices, score breakdowns and rankings.
Gaming 14%
Tree trunk
Desktop 49%
Workstation 31%
Sail boat

System: Dell Inspiron 7559


Popular SP900NS38 256GB systems:

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 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) December 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.


1012 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) $270Crucial MX500 250GB $45
Intel Core i5-9600K $200AMD RX 590 $180Samsung 850 Evo 120GB $58
Intel Core i7-9700K $369Nvidia GTX 1650S (Super) $160Samsung 850 Pro 512GB $230
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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