Average Bench: 65.1% (422nd of 859)

Based on 6,722 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Above average average bench

The Adata Premier SP550 240GB averaged 34.9% 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 26.5MB/s
Avg. Sequential Read Speed 472MB/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 28.5MB/s
Avg. 4K-64Thread Write Speed 112MB/s

Average Bench

(Based on 6,722 samples)
Min Avg Max
384 Read 472 495
195 Write 241 262
186 Mixed 253 274
70.8% 322 MB/s
Min Avg Max
17.5 4K Read 26.5 34.4
19.8 4K Write 42.6 62.7
9.11 4K Mixed 17.5 25
85.2% 28.9 MB/s
Min Avg Max
21.2 DQ Read 164 302
29.5 DQ Write 112 180
8.21 DQ Mixed 28.5 49.5
50.9% 102 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
102GB free
Firmware: P0330AA Max speed: SATA 3.0 600 MB/s
Read 484
Write 240
Mixed 263
72% 329 MB/s
4K Read 30.3
4K Write 43.2
4K Mixed 22.3
97% 31.9 MB/s
DQ Read 300
DQ Write 116
DQ Mixed 36
72% 151 MB/s
46GB free
Firmware: P0705AB Max speed: SATA 3.0 600 MB/s
Read 481
Write 247
Mixed 267
73% 332 MB/s
4K Read 23.5
4K Write 49.6
4K Mixed 17.3
84% 30.1 MB/s
DQ Read 265
DQ Write 178
DQ Mixed 12.6
66% 152 MB/s
3GB free
Firmware: P033 Max speed: SATA 3.0 600 MB/s
Read 476
Write 241
Mixed 223
69% 313 MB/s
4K Read 22.4
4K Write 46.7
4K Mixed 20.5
85% 29.8 MB/s
DQ Read 261
DQ Write 137
DQ Mixed 40.1
72% 146 MB/s
197GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 472
Write 249
Mixed 273
73% 331 MB/s
4K Read 25.4
4K Write 43
4K Mixed 9.06
73% 25.8 MB/s
DQ Read 23.6
DQ Write 131
DQ Mixed 10.6
28% 55 MB/s
35GB free
Firmware: P0121AA Max speed: SATA 3.0 600 MB/s
Read 484
Write 74.7
Mixed 118
48% 226 MB/s
4K Read 28.6
4K Write 4.16
4K Mixed 3.16
50% 12 MB/s
6,722 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,867,941 SSDs tested.


BHPhotoUS $74.0010 months ago.
AmazonUS $131.206 mins ago.
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Typical Premier SP550 240GB Builds (Compare 17,297 builds) See popular component choices, score breakdowns and rankings.
Gaming 94%
Nuclear submarine
Desktop 79%
Workstation 62%

Motherboard: Asus Z170 PRO GAMING - $158

EDIT WITH CUSTOM PC BUILDER Value: 83% - Excellent Total price: $1,087

Popular Premier SP550 240GB compatible motherboards:

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Solid State Drive Rankings (Price vs Performance) September 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 15 months ago.


11 months ago.

Really fast SSD for a good price.

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859 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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