Average Bench: 62% (468th of 853)

Based on 5,995 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Above average average bench

The Adata Premier SP550 120GB averaged 37.9% 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 27.1%. 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 5,995 samples)
Min Avg Max
387 Read 472 494
175 Write 202 240
180 Mixed 229 263
65.9% 301 MB/s
Min Avg Max
17.3 4K Read 25.9 36
23.6 4K Write 45.4 63.9
9.3 4K Mixed 16.6 25.8
84.5% 29.3 MB/s
Min Avg Max
21.5 DQ Read 148 287
35.7 DQ Write 114 174
8.97 DQ Mixed 29.6 50.8
49.6% 97.1 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
8GB free
Firmware: O0803B5a Max speed: SATA 3.0 600 MB/s
Read 486
Write 253
Mixed 267
74% 335 MB/s
4K Read 36.3
4K Write 54.4
4K Mixed 27.7
119% 39.5 MB/s
DQ Read 315
DQ Write 171
DQ Mixed 51.3
89% 179 MB/s
93GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 474
Write 196
Mixed 232
66% 301 MB/s
4K Read 24.5
4K Write 53.4
4K Mixed 17.9
88% 31.9 MB/s
DQ Read 214
DQ Write 115
DQ Mixed 38
62% 122 MB/s
112GB free
Firmware: O1230C Max speed: SATA 3.0 600 MB/s
Read 479
Write 203
Mixed 235
67% 305 MB/s
4K Read 22.8
4K Write 56.4
4K Mixed 10.5
78% 29.9 MB/s
DQ Read 250
DQ Write 154
DQ Mixed 47.2
77% 151 MB/s
91GB free
Firmware: O0803B5a Max speed: SATA 3.0 600 MB/s
Read 488
Write 226
Mixed 246
70% 320 MB/s
4K Read 19.7
4K Write 22.4
4K Mixed 9.35
54% 17.1 MB/s
DQ Read 21.3
DQ Write 28.8
DQ Mixed 9.66
12% 19.9 MB/s
5,995 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 3,285,774 SSDs tested.


AmazonUS $59.992 months ago.
OutletPCUS $167.8425 days ago.
Send price feedback
Typical Premier SP550 120GB Builds (Compare 1,745 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: 75% - Very good Total price: $450

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.

UserBenchmark of the month

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) July 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 13 months ago.

▲Like ▼Dislike

You have viewed 98 pages, please contribute.

853 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 $295Nvidia GTX 1070 $380Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $268AMD RX 480 $260Samsung 850 Pro 256GB $136
Intel Core i5-7600K $238Nvidia GTX 1060-6GB $239Samsung 850 Evo 500GB $159
Seagate Barracuda 1TB (2016) $50G.SKILL Trident Z DDR4 3200 C14 4x16GB $714SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $83Corsair Vengeance LPX DDR4 3000 C15 2x8GB $132SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $44HyperX Fury DDR4 2133 C14 2x8GB $143SanDisk Ultra Fit 32GB $13
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback