Average Bench: 77.6% (415th of 980)

Based on 9,098 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Good average bench

The Adata Premier SP550 120GB averaged 22.4% 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 202MB/s
Avg. 4K Random Mixed IO Speed 37.9MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 40.9%. 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 92MB/s
Avg. Sequential Mixed IO Speed 328MB/s

Average Bench

(Based on 9,098 samples)
Min Avg Max
366 Read 464 512
267 Write 355 428
169 Mixed 328 394
82.5 SusWrite 92 101
69% 310 MB/s
Min Avg Max
18 4K Read 28.4 41
31 4K Write 81 117
18.7 4K Mixed 37.9 54
135% 49.1 MB/s
Min Avg Max
128 DQ Read 267 340
105 DQ Write 264 325
61.2 DQ Mixed 202 265
169% 244 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
54GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 218 102 58 56 54 55 MB/s
Read 503
Write 371
Mixed 352
SusWrite 90.3
73% 329 MB/s
4K Read 27
4K Write 82.6
4K Mixed 39.9
136% 49.8 MB/s
DQ Read 276
DQ Write 322
DQ Mixed 229
192% 276 MB/s
27GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 169 146 59 52 55 55 MB/s
Read 479
Write 365
Mixed 328
SusWrite 89.1
70% 315 MB/s
4K Read 27.3
4K Write 87.4
4K Mixed 40.1
139% 51.6 MB/s
DQ Read 277
DQ Write 276
DQ Mixed 224
183% 259 MB/s
9,098 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 11,464,199 SSDs tested.


Approx. $40 @ launch in Sep '15
AmazonUS $646 days
OutletPCUS $6521 hrs
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Typical Premier SP550 120GB Builds (Compare 3,136 builds) See popular component choices, score breakdowns and rankings.
Gaming 62%
Desktop 67%
Battle cruiser
Workstation 52%

Motherboard: Asus H170-PRO - $105

EDIT WITH CUSTOM PC BUILDER Value: 82% - Excellent Total price: $667

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.
  • - 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) January 2019 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 2 years ago.

980 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 i7-8700K $360Nvidia GTX 1070 $320Samsung 850 Evo 250GB $70
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $110
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $115SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $780SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $125SanDisk Extreme 16GB $22
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