Average Bench: 78.1% (502nd of 1055)

Based on 24,076 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Good average bench

The Adata Premier SP550 240GB averaged 21.9% 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 39.3MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 240GB is 39%. 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 91.1MB/s
Avg. Sequential Mixed IO Speed 339MB/s

Average Bench

(Based on 24,076 samples)
Min Avg Max
362 Read 461 507
56.1 Write 362 452
95.9 Mixed 339 405
70 SusWrite 91.1 116
69.8% 313 MB/s
Min Avg Max
19.3 4K Read 28.7 34.5
28.1 4K Write 76.8 112
20.6 4K Mixed 39.3 50
135% 48.3 MB/s
Min Avg Max
175 DQ Read 287 335
59.8 DQ Write 264 338
69.9 DQ Mixed 210 253
175% 254 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
127GB free (System drive)
Firmware: P0705AB
SusWrite @10s intervals: 96 189 54 53 53 52 MB/s
Read 496
Write 379
Mixed 371
SusWrite 82.9
74% 332 MB/s
4K Read 31.3
4K Write 83.6
4K Mixed 43
147% 52.6 MB/s
DQ Read 285
DQ Write 333
DQ Mixed 240
200% 286 MB/s
33GB free
Firmware: P0705AB
SusWrite @10s intervals: 271 55 55 54 54 54 MB/s
Read 506
Write 460
Mixed 401
SusWrite 90.4
81% 365 MB/s
4K Read 30.7
4K Write 73.9
4K Mixed 40.5
138% 48.4 MB/s
DQ Read 283
DQ Write 312
DQ Mixed 240
197% 278 MB/s
105GB free (System drive)
Firmware: O1203AB
SusWrite @10s intervals: 206 132 52 53 53 53 MB/s
Read 463
Write 410
Mixed 375
SusWrite 91.6
75% 335 MB/s
4K Read 26.8
4K Write 59.2
4K Mixed 35.6
118% 40.5 MB/s
DQ Read 244
DQ Write 215
DQ Mixed 215
165% 225 MB/s
24,076 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 40,293,303 SSDs tested.


MSRP ≈ $60 @ launch in Sep '15
BHPhotoUS $744 years
AmazonUS $8019 months
Send price feedback
Typical Premier SP550 240GB Builds (Compare 3,168 builds) See popular component choices, score breakdowns and rankings.
Gaming 71%
Desktop 89%
Aircraft carrier
Workstation 60%

Motherboard: Asus Z170-K - $299

EDIT WITH CUSTOM PC BUILDER Value: 64% - Good Total price: $971

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.
  • - 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.

Excellent (edit your comment) Add link

2 years ago.

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


4 years ago.

Really fast SSD for a good price.

1055 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 $49
Intel Core i5-10400F $148Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i7-10700K $285Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $49
Seagate Barracuda 1TB (2016) $39Corsair 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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