Average Bench: 80.8% (419th of 1016)

Based on 4,956 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Very good average bench

The Adata Premier SP550 480GB averaged just 19.2% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Adata Premier SP550 480GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 202MB/s
Avg. 4K Random Mixed IO Speed 39.1MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 480GB is 43.2%. This is a relatively wide range which indicates that the Adata Premier SP550 480GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 144MB/s
Avg. Sequential Mixed IO Speed 322MB/s

Average Bench

(Based on 4,956 samples)
Min Avg Max
348 Read 462 509
101 Write 378 450
108 Mixed 322 393
115 SusWrite 144 166
72.9% 327 MB/s
Min Avg Max
17.2 4K Read 27.4 33.5
24 4K Write 81.1 118
20.3 4K Mixed 39.1 50.3
134% 49.2 MB/s
Min Avg Max
33.7 DQ Read 272 340
73.9 DQ Write 265 333
36.8 DQ Mixed 202 253
170% 246 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
89GB free (System drive)
Firmware: O1203AB
SusWrite @10s intervals: 293 149 74 38 38 58 MB/s
Read 484
Write 416
Mixed 387
SusWrite 108
78% 349 MB/s
4K Read 32.7
4K Write 115
4K Mixed 48.8
173% 65.4 MB/s
DQ Read 306
DQ Write 319
DQ Mixed 238
200% 288 MB/s
231GB free (System drive)
Firmware: P0330AA
SusWrite @10s intervals: 252 230 109 77 78 77 MB/s
Read 498
Write 442
Mixed 394
SusWrite 137
82% 368 MB/s
4K Read 32.2
4K Write 101
4K Mixed 46.8
162% 60.1 MB/s
DQ Read 303
DQ Write 338
DQ Mixed 237
202% 293 MB/s
163GB free (System drive)
Firmware: P0330AA
SusWrite @10s intervals: 323 167 116 75 76 75 MB/s
Read 492
Write 417
Mixed 385
SusWrite 139
80% 358 MB/s
4K Read 27.7
4K Write 59.3
4K Mixed 36.4
120% 41.1 MB/s
DQ Read 298
DQ Write 291
DQ Mixed 241
196% 277 MB/s
4,956 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,397,769 SSDs tested.


Approx. $108 @ launch in Sep '15
OutletPCUS $1108 hrs
AmazonUS $12014 days
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Typical Premier SP550 480GB Builds (Compare 23,974 builds) See popular component choices, score breakdowns and rankings.
Gaming 74%
Desktop 74%
Workstation 54%

Motherboard: Asus Z170-A - $350

EDIT WITH CUSTOM PC BUILDER Value: 62% - Good Total price: $1,168

Popular Premier SP550 480GB 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.

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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.
  • - 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) January 2020 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 3 years ago.

1016 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.
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Intel Core i5-9400F $150Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $375Nvidia RTX 2060 $349Samsung 850 Pro 512GB $249
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Ultra Fit 32GB $14
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