Average Bench: 77.8% (508th of 1058)

Based on 29,988 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Good average bench

The Adata Premier SP550 240GB averaged 22.2% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Adata Premier SP550 240GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 207MB/s
Avg. 4K Random Mixed IO Speed 39.4MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 240GB is 44.3%. This is a relatively wide range which indicates that the Adata Premier SP550 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 89.2MB/s
Avg. Sequential Mixed IO Speed 342MB/s

Average Bench

(Based on 29,988 samples)
Min Avg Max
347 Read 459 509
55.3 Write 353 453
129 Mixed 342 407
63.3 SusWrite 89.2 117
69.2% 311 MB/s
Min Avg Max
18.9 4K Read 28.5 37
25.4 4K Write 77 111
18 4K Mixed 39.4 50.5
134% 48.3 MB/s
Min Avg Max
106 DQ Read 283 333
58 DQ Write 267 341
51.5 DQ Mixed 207 252
174% 252 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
223GB free
Firmware: P0705AB
SusWrite @10s intervals: 277 54 53 53 54 54 MB/s
Read 505
Write 401
Mixed 402
SusWrite 90.8
78% 350 MB/s
4K Read 32.2
4K Write 105
4K Mixed 46.4
164% 61.1 MB/s
DQ Read 317
DQ Write 317
DQ Mixed 242
202% 292 MB/s
128GB free
Firmware: P0121AA
SusWrite @10s intervals: 95 153 53 53 54 54 MB/s
Read 456
Write 400
Mixed 367
SusWrite 77.1
72% 325 MB/s
4K Read 26.4
4K Write 84.9
4K Mixed 39.4
135% 50.2 MB/s
DQ Read 312
DQ Write 333
DQ Mixed 243
205% 296 MB/s
29,988 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 51,172,203 SSDs tested.


MSRP ≈ $60 @ launch in Sep '15
BHPhotoUS $745 years
AmazonUS $802 years
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Typical Premier SP550 240GB Builds (Compare 4,464 builds) See popular component choices, score breakdowns and rankings.
Gaming 70%
Desktop 88%
Aircraft carrier
Workstation 60%

Motherboard: Asus Z170-K - $299

EDIT WITH CUSTOM PC BUILDER Value: 84% - Excellent Total price: $940

Popular Premier SP550 240GB 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) January 2022 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 5 years ago.

Excellent (edit your comment) Add link

3 years ago.

if corrupted , website offers a tool to fix it for free unlike sandisk products


5 years ago.

Really fast SSD for a good price.

1058 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 i5-12600K $295Nvidia RTX 3060-Ti $400Crucial MX500 250GB $50
Intel Core i5-12400F $184Nvidia RTX 3070 $500Samsung 860 Evo 250GB $52
Intel Core i5-11600K $245Nvidia RTX 3080 $700Samsung 850 Evo 120GB $200
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $63SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $74SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $470SanDisk Ultra Fit 32GB $16
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