Average Bench: 76.9% (523rd of 1058)

Based on 17,120 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Good average bench

The Adata Premier SP550 120GB averaged 23.1% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Adata Premier SP550 120GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 204MB/s
Avg. 4K Random Mixed IO Speed 38.1MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 37.7%. This is a relatively wide range which indicates that the Adata Premier SP550 120GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 91.2MB/s
Avg. Sequential Mixed IO Speed 334MB/s

Average Bench

(Based on 17,120 samples)
Min Avg Max
372 Read 466 512
279 Write 360 421
179 Mixed 334 386
82.6 SusWrite 91.2 101
69.7% 313 MB/s
Min Avg Max
19.6 4K Read 28.3 40
29 4K Write 77.3 112
20 4K Mixed 38.1 53.6
133% 47.9 MB/s
Min Avg Max
98.9 DQ Read 266 330
83.4 DQ Write 252 330
72.1 DQ Mixed 204 265
168% 241 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
112GB free
Firmware: O1230C
SusWrite @10s intervals: 285 58 56 56 56 56 MB/s
Read 502
Write 313
Mixed 356
SusWrite 94.1
70% 316 MB/s
4K Read 29.5
4K Write 104
4K Mixed 43.9
156% 59 MB/s
DQ Read 283
DQ Write 298
DQ Mixed 226
188% 269 MB/s
81GB free
Firmware: O1230C
SusWrite @10s intervals: 236 91 56 56 56 57 MB/s
Read 498
Write 356
Mixed 342
SusWrite 92.1
72% 322 MB/s
4K Read 27.4
4K Write 73.7
4K Mixed 38
129% 46.4 MB/s
DQ Read 278
DQ Write 298
DQ Mixed 228
188% 268 MB/s
27GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 124 124 62 43 41 40 MB/s
Read 465
Write 121
Mixed 184
SusWrite 72.3
46% 211 MB/s
4K Read 26.4
4K Write 5.3
4K Mixed 8.6
54% 13.4 MB/s
17,120 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 45,552,892 SSDs tested.


MSRP ≈ $40 @ launch in Sep '15
AmazonUS $4510 months
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Typical Premier SP550 120GB Builds (Compare 3,459 builds) See popular component choices, score breakdowns and rankings.
Gaming 45%
Speed boat
Desktop 81%
Aircraft carrier
Workstation 38%
Jet ski

Motherboard: Asus H170-PRO - $105

EDIT WITH CUSTOM PC BUILDER Value: 60% - Good Total price: $730

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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
Solid State Drive Rankings (Price vs Performance) August 2021 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


Controller: Silicon Motion SM2256. Flash Memory: SK Hynix 16nm TLC

Faster and bigger, your superior upgrade solution...

Added 5 years ago.

1058 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 i5-11600K $270Nvidia RTX 3070 $500Crucial MX500 250GB $45
Intel Core i5-11400F $260Nvidia RTX 3060-Ti $400Samsung 860 Evo 250GB $52
Intel Core i7-11700K $380Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $183
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $31Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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