Average Bench: 76.4% (498th of 1026)

Based on 14,704 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Good average bench

The Adata Premier SP550 120GB averaged 23.5% 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 201MB/s
Avg. 4K Random Mixed IO Speed 37MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 38.9%. 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 91.3MB/s
Avg. Sequential Mixed IO Speed 326MB/s

Average Bench

(Based on 14,704 samples)
Min Avg Max
370 Read 467 512
258 Write 360 426
158 Mixed 326 390
80.4 SusWrite 91.3 101
69.2% 311 MB/s
Min Avg Max
20.7 4K Read 28 38.6
26 4K Write 77.3 112
20.1 4K Mixed 37 50.8
131% 47.4 MB/s
Min Avg Max
178 DQ Read 270 326
76.9 DQ Write 256 327
75.4 DQ Mixed 201 262
168% 242 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
46GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 217 94 56 53 54 55 MB/s
Read 498
Write 337
Mixed 358
SusWrite 88.1
71% 320 MB/s
4K Read 29.8
4K Write 103
4K Mixed 43.6
156% 58.8 MB/s
DQ Read 280
DQ Write 309
DQ Mixed 238
195% 276 MB/s
26GB free (System drive)
Firmware: O1015A
SusWrite @10s intervals: 273 55 55 55 55 49 MB/s
Read 500
Write 392
Mixed 376
SusWrite 90.5
76% 339 MB/s
4K Read 30.8
4K Write 38
4K Mixed 38
116% 35.6 MB/s
DQ Read 277
DQ Write 86
DQ Mixed 83.4
87% 149 MB/s
14,704 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 28,475,286 SSDs tested.


Approx. $40 @ launch in Sep '15
OutletPCUS $403 days
EbayUS $498 mins
AmazonUS $6023 mins
Send price feedback
Typical Premier SP550 120GB Builds (Compare 6,541 builds) See popular component choices, score breakdowns and rankings.
Gaming 53%
Desktop 69%
Battle cruiser
Workstation 55%

Motherboard: Asus H170-PRO - $105

EDIT WITH CUSTOM PC BUILDER Value: 70% - Very good Total price: $608

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) July 2020 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.

1026 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 i5-9600K $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $49
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $365Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $50
Seagate Barracuda 1TB (2016) $41Corsair Vengeance LPX DDR4 3200 C16 2x8GB $76SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $681SanDisk Extreme 16GB $24
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback