Average Bench: 63.6% (484th of 911)

Based on 2,222 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Above average average bench

The Adata Premier SP550 480GB averaged 36.3% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Read Speed 24.9MB/s
Avg. Sequential Read Speed 465MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 480GB is 32.8%. This is a relatively narrow range which indicates that the Adata Premier SP550 480GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 30.3MB/s
Avg. 4K-64Thread Write Speed 114MB/s

Average Bench

(Based on 2,222 samples)
Min Avg Max
350 Read 465 493
168 Write 234 261
166 Mixed 249 271
69.5% 316 MB/s
Min Avg Max
16.7 4K Read 24.9 31.7
20.4 4K Write 43.2 63.6
8.32 4K Mixed 16.9 24.3
82.2% 28.3 MB/s
Min Avg Max
22.8 DQ Read 169 305
35.2 DQ Write 114 177
8.58 DQ Mixed 30.3 47.9
52.8% 105 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
399GB free
Firmware: O120 Max speed: SATA 3.0 600 MB/s
Read 499
Write 241
Mixed 258
73% 333 MB/s
4K Read 26.3
4K Write 34.7
4K Mixed 17.8
81% 26.3 MB/s
DQ Read 288
DQ Write 173
DQ Mixed 21.7
72% 161 MB/s
70GB free
Firmware: P0330AA Max speed: SATA 3.0 600 MB/s
Read 491
Write 240
Mixed 265
73% 332 MB/s
4K Read 31.2
4K Write 58.3
4K Mixed 17.4
100% 35.6 MB/s
DQ Read 32.2
DQ Write 169
DQ Mixed 14.8
36% 71.9 MB/s
52GB free
Firmware: O1203AB Max speed: SATA 3.0 600 MB/s
Read 476
Write 191
Mixed 76.1
54% 248 MB/s
4K Read 19.4
4K Write 20.5
4K Mixed 23.3
70% 21.1 MB/s
DQ Read 284
DQ Write 55.4
DQ Mixed 19.1
53% 119 MB/s
260GB free
Firmware: P0330AA Max speed: SATA 3.0 600 MB/s
Read 321
Write 175
Mixed 156
48% 217 MB/s
4K Read 23.8
4K Write 23.1
4K Mixed 10.4
62% 19.1 MB/s
DQ Read 28.7
DQ Write 46.3
DQ Mixed 11.8
16% 28.9 MB/s
2,222 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 6,065,201 SSDs tested.


Approx. $108 @ launch in Sep '15
OutletPCUS $16813 hrs
AmazonUS $1761 min
EbayUS $1806 mins
Send price feedback
Typical Premier SP550 480GB Builds (Compare 18,678 builds) See popular component choices, score breakdowns and rankings.
Gaming 93%
Nuclear submarine
Desktop 78%
Workstation 62%

Motherboard: Asus Z170 PRO GAMING - $157

EDIT WITH CUSTOM PC BUILDER Value: 82% - Excellent Total price: $1,268

Popular Premier SP550 480GB 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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) March 2018 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.


Controller: Silicon Motion SM2256. Flash Memory: SK Hynix 16nm TLC.

Faster and bigger, your superior upgrade solution....

Added 21 months ago.

911 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 $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $150
AMD Ryzen 5 1600 $188AMD RX 480 $400Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $216SanDisk Extreme 16GB $18
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback