Average Bench: 63.9% (439th of 863)

Based on 8,241 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 26.1MB/s
Avg. Sequential Read Speed 470MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 240GB is 32.2%. 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 28.2MB/s
Avg. 4K-64Thread Write Speed 104MB/s

Average Bench

(Based on 8,241 samples)
Min Avg Max
352 Read 470 495
195 Write 241 261
187 Mixed 254 273
70.7% 322 MB/s
Min Avg Max
18.5 4K Read 26.1 32.9
19.7 4K Write 42 63.1
8.98 4K Mixed 16.9 24.3
83.4% 28.3 MB/s
Min Avg Max
21.8 DQ Read 151 298
32.9 DQ Write 104 178
8.57 DQ Mixed 28.2 49.5
47.9% 94.5 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
55GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 488
Write 250
Mixed 267
74% 335 MB/s
4K Read 32.2
4K Write 62.6
4K Mixed 24.8
114% 39.9 MB/s
DQ Read 272
DQ Write 178
DQ Mixed 47.3
83% 166 MB/s
57GB free
Firmware: P0330AA Max speed: SATA 3.0 600 MB/s
Read 488
Write 259
Mixed 270
75% 339 MB/s
4K Read 25
4K Write 46.7
4K Mixed 20.4
89% 30.7 MB/s
DQ Read 253
DQ Write 125
DQ Mixed 46
72% 141 MB/s
64GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 473
Write 235
Mixed 255
70% 321 MB/s
4K Read 20.8
4K Write 19.3
4K Mixed 14.8
61% 18.3 MB/s
DQ Read 197
DQ Write 94.8
DQ Mixed 45.8
61% 113 MB/s
70GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 465
Write 226
Mixed 254
69% 315 MB/s
4K Read 20.3
4K Write 19.7
4K Mixed 16.1
62% 18.7 MB/s
DQ Read 188
DQ Write 91.5
DQ Mixed 46.4
59% 109 MB/s
154GB free
Firmware: O0803B5a Max speed: SATA 3.0 600 MB/s
Read 489
Write 263
Mixed 268
75% 340 MB/s
4K Read 15.8
4K Write 17.1
4K Mixed 6.22
41% 13 MB/s
DQ Read 28.1
DQ Write 12.7
DQ Mixed 34.1
22% 24.9 MB/s
8,241 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 4,486,549 SSDs tested.


BHPhotoUS $74.0012 months ago.
AmazonUS $79.991 month ago.
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Typical Premier SP550 240GB Builds (Compare 14,360 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: 79% - Very good Total price: $1,133

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.

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Solid State Drive Rankings (Price vs Performance) November 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]


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

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

Added 17 months ago.


13 months ago.

Really fast SSD for a good price.

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863 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.

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