Average Bench: 64% (507th of 929)

Based on 12,570 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Above average average bench

The Adata Premier SP550 240GB averaged 36.0% 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 26MB/s
Avg. Sequential Read Speed 470MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 240GB is 31.5%. 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 28.6MB/s
Avg. 4K-64Thread Write Speed 109MB/s

Average Bench

(Based on 12,570 samples)
Min Avg Max
357 Read 470 495
184 Write 239 262
169 Mixed 250 273
70.3% 320 MB/s
Min Avg Max
17.6 4K Read 26 34.8
18.8 4K Write 41.5 59.7
8.65 4K Mixed 16.9 24.9
83.2% 28.2 MB/s
Min Avg Max
21.9 DQ Read 159 301
31.3 DQ Write 109 175
8.76 DQ Mixed 28.6 48.8
49.7% 98.7 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
94GB free
Firmware: P0121AA Max speed: SATA 3.0 600 MB/s
Read 489
Write 254
Mixed 267
74% 337 MB/s
4K Read 23.2
4K Write 34.8
4K Mixed 19.6
79% 25.9 MB/s
DQ Read 203
DQ Write 74.6
DQ Mixed 33.7
52% 104 MB/s
24GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 474
Write 228
Mixed 257
70% 320 MB/s
4K Read 24.1
4K Write 33.1
4K Mixed 19.5
79% 25.6 MB/s
DQ Read 163
DQ Write 64.9
DQ Mixed 39.2
49% 89.2 MB/s
115GB free
Firmware: P0330AA Max speed: SATA 3.0 600 MB/s
Read 468
Write 233
Mixed 258
70% 320 MB/s
4K Read 22.2
4K Write 24.8
4K Mixed 17.1
69% 21.4 MB/s
DQ Read 134
DQ Write 53.1
DQ Mixed 31.6
40% 72.8 MB/s
12,570 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 7,176,988 SSDs tested.


Approx. $60 @ launch in Sep '15
AmazonUS $662 months
BHPhotoUS $7419 months
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Typical Premier SP550 240GB Builds (Compare 21,116 builds) See popular component choices, score breakdowns and rankings.
Gaming 92%
Nuclear submarine
Desktop 78%
Workstation 61%

Motherboard: Asus Z170 PRO GAMING - $157

EDIT WITH CUSTOM PC BUILDER Value: 85% - Excellent Total price: $1,151

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.
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  • - Compare your components to the highest voted in class.
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  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) June 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 2 years ago.

Excellent (edit your comment) Add link

6 months ago.

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


20 months ago.

Really fast SSD for a good price.

929 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.
AMD Ryzen 5 1600 $170Nvidia GTX 1070 $413Samsung 850 Evo 250GB $104
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $138
Intel Core i5-8600K $235AMD RX 480 $280Samsung 850 Pro 256GB $121
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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