Average Bench: 62.2% (464th of 850)

Based on 138 user benchmarks.  Model: ADATA SP550

Above average average bench

The Adata Premier SP550 960GB averaged 37.7% 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 23.2MB/s
Avg. Sequential Read Speed 422MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 960GB is 23.5%. This is a relatively narrow range which indicates that the Adata Premier SP550 960GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 31.3MB/s
Avg. 4K-64Thread Write Speed 121MB/s

Average Bench

(Based on 138 samples)
Min Avg Max
351 Read 422 442
197 Write 241 262
173 Mixed 237 255
66% 300 MB/s
Min Avg Max
16.6 4K Read 23.2 27.9
25 4K Write 47.6 64.8
9.02 4K Mixed 16.6 22.1
81.6% 29.1 MB/s
Min Avg Max
20.5 DQ Read 167 300
34.9 DQ Write 121 177
8.97 DQ Mixed 31.3 45.5
53.9% 106 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
829GB free
Firmware: O1126A Max speed: SATA 3.0 600 MB/s
Read 434
Write 246
Mixed 232
67% 304 MB/s
4K Read 27.3
4K Write 62.1
4K Mixed 12.8
91% 34.1 MB/s
DQ Read 27.8
DQ Write 177
DQ Mixed 12.8
36% 72.6 MB/s
98GB free
Firmware: O1126A Max speed: SATA 3.0 600 MB/s
Read 440
Write 256
Mixed 251
70% 316 MB/s
4K Read 18.9
4K Write 22.6
4K Mixed 13.8
58% 18.4 MB/s
DQ Read 78.8
DQ Write 39.4
DQ Mixed 21.7
26% 46.6 MB/s
138 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,858,783 SSDs tested.


AmazonUS $299.995 mins ago.
EbayUS $310.2013 mins ago.
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Typical Premier SP550 960GB Builds (Compare 5,094 builds) See popular component choices, score breakdowns and rankings.
Gaming 93%
Nuclear submarine
Desktop 77%
Workstation 62%

Motherboard: MSI Z170A GAMING M5 (MS-7977) - $128

EDIT WITH CUSTOM PC BUILDER Value: 84% - Excellent Total price: $1,229

Popular Premier SP550 960GB 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) May 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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850 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.
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Intel Core i5-7600K $229AMD RX 480 $227Samsung 850 Pro 256GB $132
AMD Ryzen 7 1700 $300Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $160
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46Corsair Vengeance LPX DDR4 3200 C16 2x8GB $136SanDisk Ultra Fit 32GB $12
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