Average Bench: 62.8% (449th of 850)

Based on 4,990 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Above average average bench

The Adata Premier SP550 120GB averaged 37.2% 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 26.6MB/s
Avg. Sequential Read Speed 475MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 30.3%. 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 30MB/s
Avg. Sequential Write Speed 203MB/s

Average Bench

(Based on 4,990 samples)
Min Avg Max
418 Read 475 495
175 Write 203 248
200 Mixed 233 266
66.5% 303 MB/s
Min Avg Max
17.7 4K Read 26.6 38.8
23.4 4K Write 46.6 65
9.19 4K Mixed 16.7 26.9
86.4% 30 MB/s
Min Avg Max
22 DQ Read 149 288
34.3 DQ Write 113 176
8.79 DQ Mixed 30 50.9
50% 97.6 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
30GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 480
Write 213
Mixed 232
68% 308 MB/s
4K Read 28.5
4K Write 55.1
4K Mixed 12.5
88% 32.1 MB/s
DQ Read 242
DQ Write 159
DQ Mixed 12.4
60% 138 MB/s
28GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 492
Write 205
Mixed 234
68% 311 MB/s
4K Read 29.5
4K Write 64.2
4K Mixed 13.3
96% 35.7 MB/s
DQ Read 29.9
DQ Write 68.7
DQ Mixed 47.3
37% 48.6 MB/s
73GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 360
Write 185
Mixed 200
55% 248 MB/s
4K Read 25.8
4K Write 27.4
4K Mixed 10.7
67% 21.3 MB/s
DQ Read 27.8
DQ Write 46.9
DQ Mixed 10.3
15% 28.3 MB/s
4,990 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,844,578 SSDs tested.


AmazonUS $59.9911 days ago.
EbayUS $81.955 mins ago.
OutletPCUS $107.8420 hrs ago.
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Typical Premier SP550 120GB Builds (Compare 1,522 builds) See popular component choices, score breakdowns and rankings.
Gaming 16%
Desktop 62%
Workstation 41%
Speed boat

Motherboard: Asus H170-PRO - $105

EDIT WITH CUSTOM PC BUILDER Value: 73% - Very good Total price: $471

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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How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - 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.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
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.

Faster and bigger, your superior upgrade solution....

Added 11 months ago.

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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

 Best User Rated

The Best.
Intel Core i7-7700K $309Nvidia GTX 1070 $368Samsung 850 Evo 250GB $98
Intel Core i5-7600K $240AMD RX 480 $220Samsung 850 Pro 256GB $129
AMD Ryzen 7 1700 $300Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $165
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 $13
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