Average Bench: 81.1% (453rd of 1053)

Based on 6,082 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Very good average bench

The Adata Premier SP550 480GB averaged just 18.9% 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 213MB/s
Avg. 4K Random Mixed IO Speed 39MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 480GB is 40%. 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 146MB/s
Avg. Sequential Mixed IO Speed 319MB/s

Average Bench

(Based on 6,082 samples)
Min Avg Max
352 Read 466 511
78.8 Write 360 454
84.8 Mixed 319 394
109 SusWrite 146 167
72% 323 MB/s
Min Avg Max
17.7 4K Read 27.5 33.6
30 4K Write 78.6 116
18.6 4K Mixed 39 50.3
133% 48.4 MB/s
Min Avg Max
191 DQ Read 282 346
88.4 DQ Write 275 334
81.4 DQ Mixed 213 253
178% 257 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
280GB free (System drive)
Firmware: P0330AA
SusWrite @10s intervals: 134 262 216 237 161 211 MB/s
Read 410
Write 77
Mixed 395
SusWrite 204
60% 271 MB/s
4K Read 33.7
4K Write 105
4K Mixed 48.5
169% 62.5 MB/s
DQ Read 292
DQ Write 327
DQ Mixed 237
198% 285 MB/s
103GB free (System drive)
Firmware: O0803B5a
SusWrite @10s intervals: 354 227 103 68 106 94 MB/s
Read 445
Write 392
Mixed 322
SusWrite 159
74% 330 MB/s
4K Read 25.5
4K Write 78.7
4K Mixed 12.4
96% 38.9 MB/s
DQ Read 302
DQ Write 317
DQ Mixed 253
206% 291 MB/s
6,082 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 40,048,399 SSDs tested.


MSRP ≈ $108 @ launch in Sep '15
OutletPCUS $1255 months
AmazonUS $1295 months
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Typical Premier SP550 480GB Builds (Compare 73,562 builds) See popular component choices, score breakdowns and rankings.
Gaming 101%
Desktop 87%
Aircraft carrier
Workstation 95%
Nuclear submarine

Motherboard: Asus ROG STRIX B450-F GAMING - $135

EDIT WITH CUSTOM PC BUILDER Value: 58% - Above average Total price: $1,084

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.

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) March 2021 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 4 years ago.

1053 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 i5-10600K $224Nvidia RTX 3060-Ti $400Crucial MX500 250GB $48
Intel Core i5-10400F $143Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i7-10700K $325Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $50
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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