Average Bench: 61.9% (472nd of 859)

Based on 7,140 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Above average average bench

The Adata Premier SP550 120GB averaged 38.0% 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 25.9MB/s
Avg. Sequential Read Speed 472MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 27.4%. 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 29.6MB/s
Avg. Sequential Write Speed 202MB/s

Average Bench

(Based on 7,140 samples)
Min Avg Max
362 Read 472 494
173 Write 202 248
185 Mixed 230 266
66% 301 MB/s
Min Avg Max
17.3 4K Read 25.9 35.9
23.1 4K Write 45 64.3
8.84 4K Mixed 16.4 25.3
84% 29.1 MB/s
Min Avg Max
21.8 DQ Read 151 269
34.9 DQ Write 114 173
8.84 DQ Mixed 29.6 50.4
50.1% 98.3 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
50GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 488
Write 202
Mixed 230
67% 307 MB/s
4K Read 28.6
4K Write 60.2
4K Mixed 13
92% 34 MB/s
DQ Read 29.1
DQ Write 63.8
DQ Mixed 12.8
19% 35.2 MB/s
17GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 493
Write 227
Mixed 246
71% 322 MB/s
4K Read 26.6
4K Write 44.7
4K Mixed 11.5
79% 27.6 MB/s
DQ Read 26.4
DQ Write 45.7
DQ Mixed 11.2
16% 27.8 MB/s
74GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 361
Write 173
Mixed 169
51% 234 MB/s
4K Read 23.9
4K Write 38.6
4K Mixed 9.34
68% 23.9 MB/s
DQ Read 26.4
DQ Write 51.5
DQ Mixed 10.2
16% 29.4 MB/s
7,140 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,842,734 SSDs tested.


AmazonUS $77.4516 mins ago.
OutletPCUS $167.842 months ago.
EbayUS $168.293 mins ago.
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Typical Premier SP550 120GB Builds (Compare 1,970 builds) See popular component choices, score breakdowns and rankings.
Gaming 17%
Desktop 62%
Workstation 41%
Speed boat

Motherboard: Asus H170-PRO - $105

EDIT WITH CUSTOM PC BUILDER Value: 71% - Very good Total price: $480

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) 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.

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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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The Best.
Intel Core i7-7700K $297Nvidia GTX 1070 $410Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $270AMD RX 480 $350Samsung 850 Pro 256GB $120
Intel Core i5-7600K $220Nvidia GTX 1060-6GB $265Samsung 850 Evo 500GB $149
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $724SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $152SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $40HyperX Fury DDR4 2133 C14 2x8GB $141SanDisk Extreme 16GB $20
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