Average Bench: 65% (415th of 853)

Based on 6,502 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 26.7MB/s
Avg. Sequential Read Speed 470MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 240GB is 30.8%. 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 115MB/s

Average Bench

(Based on 6,502 samples)
Min Avg Max
354 Read 470 495
188 Write 240 261
174 Mixed 253 274
70.6% 321 MB/s
Min Avg Max
18.5 4K Read 26.7 33.4
23.5 4K Write 44.3 64.4
9.54 4K Mixed 17.3 24.7
86% 29.4 MB/s
Min Avg Max
23 DQ Read 158 301
35.4 DQ Write 115 179
8.68 DQ Mixed 28.6 48.7
50.7% 101 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
128GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 488
Write 253
Mixed 269
74% 337 MB/s
4K Read 29
4K Write 54.8
4K Mixed 23.4
103% 35.7 MB/s
DQ Read 294
DQ Write 155
DQ Mixed 39.9
79% 163 MB/s
137GB free
Firmware: P0705AB Max speed: SATA 3.0 600 MB/s
Read 494
Write 259
Mixed 272
75% 342 MB/s
4K Read 32.2
4K Write 61.6
4K Mixed 14.8
100% 36.2 MB/s
DQ Read 33.4
DQ Write 65.2
DQ Mixed 14.8
21% 37.8 MB/s
93GB free
Firmware: P0705AB Max speed: SATA 3.0 600 MB/s
Read 489
Write 258
Mixed 268
74% 338 MB/s
4K Read 24.6
4K Write 49.9
4K Mixed 11.6
79% 28.7 MB/s
DQ Read 245
DQ Write 138
DQ Mixed 42
71% 142 MB/s
187GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 474
Write 228
Mixed 263
71% 321 MB/s
4K Read 20.5
4K Write 25.4
4K Mixed 9.38
56% 18.4 MB/s
DQ Read 19.9
DQ Write 37.1
DQ Mixed 8.18
12% 21.7 MB/s
6,502 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,318,879 SSDs tested.


BHPhotoUS $74.008 months ago.
AmazonUS $100.301 month ago.
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Typical Premier SP550 240GB Builds (Compare 15,522 builds) See popular component choices, score breakdowns and rankings.
Gaming 93%
Nuclear submarine
Desktop 79%
Workstation 63%

Motherboard: Asus Z170 PRO GAMING - $158

EDIT WITH CUSTOM PC BUILDER Value: 84% - Excellent Total price: $1,076

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) July 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 13 months ago.


9 months ago.

Really fast SSD for a good price.

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853 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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