Average Bench: 63.3% (448th of 859)

Based on 1,851 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Above average average bench

The Adata Premier SP550 480GB averaged 36.6% 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 24.8MB/s
Avg. Sequential Read Speed 469MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 480GB is 31.7%. This is a relatively narrow range which indicates that the Adata Premier SP550 480GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 29.8MB/s
Avg. 4K-64Thread Write Speed 110MB/s

Average Bench

(Based on 1,851 samples)
Min Avg Max
360 Read 469 493
182 Write 236 260
183 Mixed 252 271
70.1% 319 MB/s
Min Avg Max
15 4K Read 24.8 31.8
19.8 4K Write 43.4 64.2
8.24 4K Mixed 16.8 24.4
82% 28.3 MB/s
Min Avg Max
20.2 DQ Read 151 302
31.6 DQ Write 110 177
8.57 DQ Mixed 29.8 48.1
49.6% 97.1 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
216GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 476
Write 225
Mixed 262
70% 321 MB/s
4K Read 27.7
4K Write 52.6
4K Mixed 23.9
100% 34.7 MB/s
DQ Read 274
DQ Write 171
DQ Mixed 46.4
82% 164 MB/s
46GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 494
Write 256
Mixed 264
74% 338 MB/s
4K Read 29
4K Write 63
4K Mixed 14
95% 35.3 MB/s
DQ Read 280
DQ Write 176
DQ Mixed 14
68% 157 MB/s
78GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 494
Write 245
Mixed 266
74% 335 MB/s
4K Read 32.3
4K Write 64.1
4K Mixed 24
114% 40.1 MB/s
DQ Read 33.1
DQ Write 144
DQ Mixed 15.1
33% 64.1 MB/s
205GB free
Firmware: O0730A Max speed: SATA 3.0 600 MB/s
Read 492
Write 253
Mixed 269
74% 338 MB/s
4K Read 24.4
4K Write 49.2
4K Mixed 20
88% 31.2 MB/s
DQ Read 296
DQ Write 137
DQ Mixed 48.2
80% 161 MB/s
1,851 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,856,388 SSDs tested.


AmazonUS $149.9912 mins ago.
OutletPCUS $167.8315 hrs ago.
EbayUS $174.7316 mins ago.
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Typical Premier SP550 480GB Builds (Compare 10,075 builds) See popular component choices, score breakdowns and rankings.
Gaming 63%
Desktop 73%
Workstation 56%

Motherboard: MSI Z97 GAMING 5 (MS-7917) - $160

EDIT WITH CUSTOM PC BUILDER Value: 71% - Very good Total price: $1,117

Popular Premier SP550 480GB 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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  • - CPU tests include: integer, floating and string.
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  • - 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.
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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....

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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.

 Frequently Asked Questions

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