Average Bench: 66.1% (481st of 929)

Based on 3,122 user benchmarks.  Models: ADATA SP900, ADATA SSD SP900 256GB-DL2, ADATA SP 900

Above average average bench

The Adata SP900 256GB averaged 33.9% 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 76MB/s
Avg. Sequential Read Speed 472MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata SP900 256GB is 30.7%. This is a relatively narrow range which indicates that the Adata SP900 256GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Read Speed 133MB/s
Avg. Sequential Write Speed 232MB/s

Average Bench

(Based on 3,122 samples)
Min Avg Max
351 Read 472 513
181 Write 232 277
208 Mixed 287 347
72.7% 330 MB/s
Min Avg Max
9.14 4K Read 21.4 30.7
38.1 4K Write 76 109
7.41 4K Mixed 14.1 20.1
90.7% 37.2 MB/s
Min Avg Max
20.6 DQ Read 133 269
61 DQ Write 167 251
7.69 DQ Mixed 39.2 78.3
60.3% 113 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
117GB free
Firmware: 5.0.7a Max speed: SATA 3.0 600 MB/s
Read 522
Write 278
Mixed 353
85% 384 MB/s
4K Read 30.7
4K Write 116
4K Mixed 18.9
132% 55.2 MB/s
DQ Read 34.5
DQ Write 119
DQ Mixed 13.9
29% 55.9 MB/s
99GB free
Firmware: 5.8.2 Max speed: SATA 3.0 600 MB/s
Read 484
Write 252
Mixed 321
78% 353 MB/s
4K Read 26
4K Write 51.2
4K Mixed 18
90% 31.7 MB/s
DQ Read 158
DQ Write 105
DQ Mixed 68.4
68% 110 MB/s
147GB free
Firmware: 5.6.0 Max speed: SATA 3.0 600 MB/s
Read 438
Write 220
Mixed 295
70% 318 MB/s
4K Read 26
4K Write 92.3
4K Mixed 18
111% 45.4 MB/s
DQ Read 22.4
DQ Write 46.4
DQ Mixed 1.09
10% 23.3 MB/s
37GB free
Firmware: 5.6.0 Max speed: SATA 3.0 600 MB/s
Read 494
Write 239
Mixed 295
75% 343 MB/s
4K Read 11.4
4K Write 36.7
4K Mixed 8.31
47% 18.8 MB/s
DQ Read 108
DQ Write 79
DQ Mixed 46.6
48% 77.8 MB/s
3,122 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,227,843 SSDs tested.


AmazonUS $1903 months
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Typical SP900 256GB Builds (Compare 21,244 builds) See popular component choices, score breakdowns and rankings.
Gaming 92%
Nuclear submarine
Desktop 78%
Workstation 61%

Motherboard: Asus Z170 PRO GAMING - $157

EDIT WITH CUSTOM PC BUILDER Value: 78% - Very good Total price: $1,261

Popular SP900 256GB 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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) June 2018 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


Controller: LSI SandForce SF2281. NAND Flash: Intel Micron Synchronous 25nm MLC.

Added n/a ago.
929 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 $317Nvidia GTX 1070 $413Samsung 850 Evo 250GB $104
AMD Ryzen 5 1600 $160Nvidia GTX 1060-6GB $270Samsung 850 Evo 500GB $125
Intel Core i5-8600K $239AMD RX 480 $280Samsung 850 Pro 256GB $125
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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