Average Bench: 78.5% (511th of 1072)

Based on 29,295 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Good average bench

The Adata Premier SP550 240GB averaged 21.4% 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 210MB/s
Avg. 4K Random Mixed IO Speed 39.7MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 240GB is 35.8%. 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 91.3MB/s
Avg. Sequential Mixed IO Speed 344MB/s

Average Bench

(Based on 29,295 samples)
Min Avg Max
359 Read 458 506
55.9 Write 356 454
133 Mixed 344 404
68.8 SusWrite 91.3 119
69.7% 313 MB/s
Min Avg Max
20.2 4K Read 28.7 33.9
31.8 4K Write 79 110
22.2 4K Mixed 39.7 49.1
136% 49.1 MB/s
Min Avg Max
195 DQ Read 287 340
67.1 DQ Write 270 339
71 DQ Mixed 210 253
176% 256 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
26GB free (System drive)
Firmware: P0330AA
SusWrite @10s intervals: 159 112 54 53 53 52 MB/s
Read 498
Write 431
Mixed 404
SusWrite 80.2
79% 353 MB/s
4K Read 29.8
4K Write 81.7
4K Mixed 42.2
142% 51.2 MB/s
DQ Read 284
DQ Write 319
DQ Mixed 240
198% 281 MB/s
42GB free (System drive)
Firmware: O1203AB
SusWrite @10s intervals: 156 143 54 53 52 52 MB/s
Read 495
Write 445
Mixed 398
SusWrite 84.8
79% 356 MB/s
4K Read 28.7
4K Write 82
4K Mixed 41.3
140% 50.7 MB/s
DQ Read 282
DQ Write 320
DQ Mixed 239
197% 280 MB/s
29,295 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,133,867 SSDs tested


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MSRP ≈ $60 @ launch in Sep '15
BHPhotoUS $747 years
AmazonUS $804 years
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Typical Premier SP550 240GB Builds (Compare 2,750 builds) See popular component choices, score breakdowns and rankings
Gaming 68%
Battle cruiser
Desktop 86%
Aircraft carrier
Workstation 58%

Motherboard: Asus Z170-K - $299

EDIT WITH CUSTOM PC BUILDER Value: 98% - Outstanding Total price: $750

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 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 value for money 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) February 2024 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.

Excellent (edit your comment) Add link

5 years ago.

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


7 years ago.

Really fast SSD for a good price.

1072 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 $285Nvidia RTX 4060 $285Crucial MX500 250GB $31
Intel Core i5-12400F $146Nvidia RTX 4060-Ti $360Samsung 850 Evo 120GB $80
Intel Core i5-12600K $170Nvidia RTX 4070 $530Samsung 860 Evo 250GB $49
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $45SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $64G.SKILL Trident Z DDR4 3200 C14 4x16GB $346SanDisk Ultra Fit 32GB $16
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