Average Bench: 61.4% (465th of 848)

Based on 3,741 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Above average average bench

The Adata Premier SP550 120GB averaged 38.6% 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 25.5MB/s
Avg. Sequential Read Speed 468MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 28.6%. This is a relatively narrow range which indicates that the Adata Premier SP550 120GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 29.7MB/s
Avg. Sequential Write Speed 200MB/s

Average Bench

(Based on 3,741 samples)
Min Avg Max
363 Read 468 494
172 Write 200 245
173 Mixed 229 263
65.5% 299 MB/s
Min Avg Max
17.2 4K Read 25.5 36.4
21.5 4K Write 45.2 64
8.75 4K Mixed 16.1 25.4
83.2% 28.9 MB/s
Min Avg Max
21.6 DQ Read 149 286
36.6 DQ Write 118 175
8.83 DQ Mixed 29.7 50.5
50.3% 98.6 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
47GB free
Firmware: O1230C
Read 491
Write 224
Mixed 259
71% 324 MB/s
4K Read 36.3
4K Write 59.9
4K Mixed 24.6
118% 40.2 MB/s
DQ Read 279
DQ Write 157
DQ Mixed 48.9
82% 162 MB/s
29GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 474
Write 213
Mixed 241
68% 310 MB/s
4K Read 20.3
4K Write 32
4K Mixed 18.5
71% 23.6 MB/s
DQ Read 257
DQ Write 159
DQ Mixed 46.6
78% 154 MB/s
92GB free
Firmware: O0803B5a Max speed: SATA 3.0 600 MB/s
Read 427
Write 189
Mixed 213
60% 276 MB/s
4K Read 27.3
4K Write 46.8
4K Mixed 19.1
91% 31.1 MB/s
DQ Read 170
DQ Write 84.7
DQ Mixed 44.2
55% 99.7 MB/s
50GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 475
Write 200
Mixed 232
66% 303 MB/s
4K Read 21
4K Write 36.5
4K Mixed 8.99
63% 22.2 MB/s
DQ Read 21.6
DQ Write 35.8
DQ Mixed 8.7
12% 22 MB/s
3,741 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,373,786 SSDs tested.


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Typical Premier SP550 120GB Builds (Compare 1,311 builds) See popular component choices, score breakdowns and rankings.
Gaming 16%
Desktop 62%
Workstation 41%
Speed boat

Motherboard: Asus H170-PRO - $98

EDIT WITH CUSTOM PC BUILDER Value: 72% - Very good Total price: $469

Popular Premier SP550 120GB 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) March 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.

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848 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

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