Average Bench: 75.4% (550th of 1058)

Based on 16,649 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Good average bench

The Adata Premier SP550 120GB averaged 24.6% 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 197MB/s
Avg. 4K Random Mixed IO Speed 36.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 39.6%. 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 90.7MB/s
Avg. Sequential Mixed IO Speed 326MB/s

Average Bench

(Based on 16,649 samples)
Min Avg Max
344 Read 457 511
249 Write 353 417
169 Mixed 326 385
76 SusWrite 90.7 101
68.3% 307 MB/s
Min Avg Max
18.8 4K Read 27.5 37.1
26.9 4K Write 77.4 114
16.6 4K Mixed 36.6 48.2
130% 47.2 MB/s
Min Avg Max
135 DQ Read 262 323
70.6 DQ Write 253 330
68.9 DQ Mixed 197 252
164% 237 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
53GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 166 146 52 54 54 53 MB/s
Read 458
Write 347
Mixed 325
SusWrite 87.5
68% 304 MB/s
4K Read 29.4
4K Write 103
4K Mixed 43.9
155% 58.7 MB/s
DQ Read 279
DQ Write 257
DQ Mixed 224
180% 254 MB/s
28GB free (System drive)
Firmware: 0C
SusWrite @10s intervals: 229 105 60 68 61 67 MB/s
Read 394
Write 354
Mixed 356
SusWrite 98.6
67% 301 MB/s
4K Read 34.8
4K Write 64.4
4K Mixed 42.8
142% 47.3 MB/s
DQ Read 333
DQ Write 313
DQ Mixed 157
163% 268 MB/s
16,649 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 41,716,230 SSDs tested.


MSRP ≈ $40 @ launch in Sep '15
OutletPCUS $406 months
AmazonUS $457 months
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Typical Premier SP550 120GB Builds (Compare 3,060 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: 64% - Good Total price: $654

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.
  • - 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.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) April 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 4 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 i5-11400F $173Nvidia RTX 3070 $500Crucial MX500 250GB $49
Intel Core i5-11600K $265Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i7-10700K $316Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $50
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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