Average Bench: 75.6% (563rd of 1071)

Based on 22,057 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Good average bench

The Adata Premier SP550 120GB averaged 24.4% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Adata Premier SP550 120GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 196MB/s
Avg. 4K Random Mixed IO Speed 36.5MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 40.6%. This is a relatively wide range which indicates that the Adata Premier SP550 120GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 91MB/s
Avg. Sequential Mixed IO Speed 328MB/s

Average Bench

(Based on 22,057 samples)
Min Avg Max
346 Read 460 510
218 Write 351 416
171 Mixed 328 386
75.8 SusWrite 91 102
68.5% 308 MB/s
Min Avg Max
18.9 4K Read 28 39.3
24.6 4K Write 76.6 114
14.9 4K Mixed 36.5 49.5
130% 47 MB/s
Min Avg Max
157 DQ Read 269 333
77.3 DQ Write 251 329
50.8 DQ Mixed 196 259
164% 239 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
55GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 228 100 59 56 56 57 MB/s
Read 500
Write 396
Mixed 374
SusWrite 92.6
76% 341 MB/s
4K Read 26.6
4K Write 80.5
4K Mixed 38.8
133% 48.6 MB/s
DQ Read 272
DQ Write 312
DQ Mixed 235
193% 273 MB/s
53GB free (System drive)
Firmware: O1015A
SusWrite @10s intervals: 280 53 55 55 57 50 MB/s
Read 488
Write 367
Mixed 129
SusWrite 91.5
59% 269 MB/s
4K Read 27.9
4K Write 33.9
4K Mixed 32.5
102% 31.4 MB/s
DQ Read 310
DQ Write 91.7
DQ Mixed 254
173% 219 MB/s
22,057 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 71,100,975 SSDs tested.


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MSRP ≈ $40 @ launch in Sep '15
AmazonUS $453 years
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Typical Premier SP550 120GB Builds (Compare 2,034 builds) See popular component choices, score breakdowns and rankings.
Gaming 62%
Desktop 79%
Workstation 52%

Motherboard: Asus H170-PRO - $105

EDIT WITH CUSTOM PC BUILDER Value: 95% - Outstanding Total price: $489

Popular Premier SP550 120GB 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.
  • - 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) September 2023 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.


Controller: Silicon Motion SM2256. Flash Memory: SK Hynix 16nm TLC

Faster and bigger, your superior upgrade solution...

Added 7 years ago.

1071 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 i5-13600K $310Nvidia RTX 4060 $300Crucial MX500 250GB $30
Intel Core i5-12400F $150Nvidia RTX 4060-Ti $397Samsung 850 Evo 120GB $60
Intel Core i5-12600K $205Nvidia RTX 3060-Ti $260Samsung 860 Evo 250GB $50
Seagate Barracuda 1TB (2016) $40Corsair 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) $50G.SKILL Trident Z DDR4 3200 C14 4x16GB $381SanDisk Ultra Fit 32GB $16
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