Average Bench: 64.4% (450th of 885)

Based on 9,352 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Above average average bench

The Adata Premier SP550 240GB averaged 35.6% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Read Speed 26.4MB/s
Avg. Sequential Read Speed 469MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 240GB is 31.9%. This is a relatively narrow range which indicates that the Adata Premier SP550 240GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 29.1MB/s
Avg. 4K-64Thread Write Speed 111MB/s

Average Bench

(Based on 9,352 samples)
Min Avg Max
358 Read 469 494
166 Write 236 261
151 Mixed 249 273
69.9% 318 MB/s
Min Avg Max
17.6 4K Read 26.4 32.9
19.8 4K Write 42.7 63.2
8.87 4K Mixed 17.1 24.4
84.5% 28.7 MB/s
Min Avg Max
22.8 DQ Read 163 299
32.4 DQ Write 111 177
9.35 DQ Mixed 29.1 48.8
50.9% 101 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
9GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 493
Write 253
Mixed 268
74% 338 MB/s
4K Read 31.2
4K Write 54.3
4K Mixed 14.3
94% 33.3 MB/s
DQ Read 37.1
DQ Write 168
DQ Mixed 40.3
49% 81.8 MB/s
167GB free
Firmware: P0121AA Max speed: SATA 3.0 600 MB/s
Read 489
Write 252
Mixed 273
74% 338 MB/s
4K Read 25.4
4K Write 28.2
4K Mixed 18.5
77% 24 MB/s
DQ Read 145
DQ Write 61.3
DQ Mixed 36.6
45% 80.8 MB/s
64GB free
Firmware: P0330AA Max speed: SATA 3.0 600 MB/s
Read 481
Write 249
Mixed 266
73% 332 MB/s
4K Read 26.7
4K Write 49.5
4K Mixed 13.4
84% 29.9 MB/s
DQ Read 28.4
DQ Write 35.3
DQ Mixed 12.1
15% 25.3 MB/s
9,352 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 5,673,090 SSDs tested.


Approx. $60 @ launch in Sep '15
BHPhotoUS $7415 months
AmazonUS $9016 mins
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Typical Premier SP550 240GB Builds (Compare 17,785 builds) See popular component choices, score breakdowns and rankings.
Gaming 93%
Nuclear submarine
Desktop 79%
Workstation 62%

Motherboard: Asus Z170 PRO GAMING - $157

EDIT WITH CUSTOM PC BUILDER Value: 77% - Very good Total price: $1,187

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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) February 2018 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


Controller: Silicon Motion SM2256. Flash Memory: SK Hynix 16nm TLC.

Faster and bigger, your superior upgrade solution....

Added 20 months ago.

Excellent (edit your comment) Add link

2 months ago.

Works great after a whole year of use... PC boots up in 2 seconds


16 months ago.

Really fast SSD for a good price.

885 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 i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $88
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $149
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $146
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $192SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $975SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
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