Average Bench: 77.2% (501st of 1040)

Based on 15,996 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Good average bench

The Adata Premier SP550 120GB averaged 22.7% 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 207MB/s
Avg. 4K Random Mixed IO Speed 38MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 38.1%. 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 92.5MB/s
Avg. Sequential Mixed IO Speed 333MB/s

Average Bench

(Based on 15,996 samples)
Min Avg Max
375 Read 466 511
290 Write 367 425
191 Mixed 333 393
85.6 SusWrite 92.5 103
70.1% 315 MB/s
Min Avg Max
19.6 4K Read 28.2 40.2
22.6 4K Write 77.9 113
20.1 4K Mixed 38 51.4
133% 48 MB/s
Min Avg Max
185 DQ Read 274 345
95.8 DQ Write 256 328
82.7 DQ Mixed 207 265
171% 246 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
111GB free
Firmware: O1230C
SusWrite @10s intervals: 254 75 53 59 55 55 MB/s
Read 513
Write 375
Mixed 367
SusWrite 91.8
75% 337 MB/s
4K Read 28.6
4K Write 89.5
4K Mixed 40.9
143% 53 MB/s
DQ Read 273
DQ Write 306
DQ Mixed 231
190% 270 MB/s
55GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 237 84 55 55 56 55 MB/s
Read 393
Write 328
Mixed 306
SusWrite 90.5
62% 280 MB/s
4K Read 20.4
4K Write 70.3
4K Mixed 31.4
108% 40.7 MB/s
DQ Read 275
DQ Write 292
DQ Mixed 231
188% 266 MB/s
15,996 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 38,331,128 SSDs tested.


MSRP ≈ $40 @ launch in Sep '15
OutletPCUS $404 months
AmazonUS $454 months
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Typical Premier SP550 120GB Builds (Compare 2,719 builds) See popular component choices, score breakdowns and rankings.
Gaming 45%
Desktop 82%
Aircraft carrier
Workstation 39%
Jet ski

Motherboard: Asus H170-PRO - $105

EDIT WITH CUSTOM PC BUILDER Value: 65% - Good Total price: $629

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) January 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.

1040 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 i5-10600K $257Nvidia RTX 3060-Ti $400Crucial MX500 250GB $47
Intel Core i5-9600K $200Nvidia RTX 3070 $500Samsung 850 Evo 120GB $78
Intel Core i5-10400F $161Nvidia GTX 1660S (Super) $240Samsung 860 Evo 250GB $40
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $71SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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