Average Bench: 76.1% (497th of 1016)

Based on 10,310 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Good average bench

The Adata Premier SP550 120GB averaged 23.8% 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 192MB/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 39.8%. 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 91.8MB/s
Avg. Sequential Mixed IO Speed 327MB/s

Average Bench

(Based on 10,310 samples)
Min Avg Max
363 Read 465 510
272 Write 362 426
168 Mixed 327 397
82.7 SusWrite 91.8 102
69.3% 311 MB/s
Min Avg Max
19.7 4K Read 28.2 39.1
26.2 4K Write 78.7 115
16.6 4K Mixed 36.6 50.4
131% 47.8 MB/s
Min Avg Max
99.8 DQ Read 262 336
90.9 DQ Write 250 328
46.7 DQ Mixed 192 264
162% 235 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
47GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 217 101 57 49 55 53 MB/s
Read 507
Write 336
Mixed 336
SusWrite 88.7
70% 317 MB/s
4K Read 30.9
4K Write 111
4K Mixed 45.1
163% 62.4 MB/s
DQ Read 279
DQ Write 295
DQ Mixed 235
191% 270 MB/s
24GB free (System drive)
Firmware: O0730A
SusWrite @10s intervals: 283 55 57 59 50 46 MB/s
Read 507
Write 400
Mixed 383
SusWrite 91.8
77% 345 MB/s
4K Read 29.7
4K Write 105
4K Mixed 42.7
155% 59.2 MB/s
DQ Read 282
DQ Write 317
DQ Mixed 239
196% 279 MB/s
81GB free (System drive)
Firmware: O1230H
SusWrite @10s intervals: 249 82 57 51 56 55 MB/s
Read 477
Write 374
Mixed 346
SusWrite 91.6
72% 322 MB/s
4K Read 24.6
4K Write 60.2
4K Mixed 33.1
112% 39.3 MB/s
DQ Read 285
DQ Write 328
DQ Mixed 232
195% 281 MB/s
10,310 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,624,497 SSDs tested.


Approx. $40 @ launch in Sep '15
OutletPCUS $401 day
EbayUS $4930 mins
AmazonUS $6018 hrs
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Typical Premier SP550 120GB Builds (Compare 5,277 builds) See popular component choices, score breakdowns and rankings.
Gaming 71%
Desktop 64%
Workstation 48%

Motherboard: Asus H170-PRO - $105

EDIT WITH CUSTOM PC BUILDER Value: 58% - Above average Total price: $790

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 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 3 years ago.

1016 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 i5-9400F $155Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $43
Intel Core i5-9600K $218Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $370Nvidia RTX 2060 $340Samsung 850 Pro 512GB $204
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $42Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $643SanDisk Ultra Fit 32GB $16
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