Average Bench: 81% (411th of 1012)

Based on 4,840 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Very good average bench

The Adata Premier SP550 480GB averaged just 18.9% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Adata Premier SP550 480GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 200MB/s
Avg. 4K Random Mixed IO Speed 39.7MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 480GB is 41.2%. This is a relatively wide range which indicates that the Adata Premier SP550 480GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 143MB/s
Avg. Sequential Mixed IO Speed 324MB/s

Average Bench

(Based on 4,840 samples)
Min Avg Max
348 Read 460 508
109 Write 380 449
103 Mixed 324 393
113 SusWrite 143 166
72.9% 327 MB/s
Min Avg Max
18.6 4K Read 27.6 33.7
26.4 4K Write 82.5 120
22.2 4K Mixed 39.7 50.7
136% 50 MB/s
Min Avg Max
31.9 DQ Read 267 337
67.9 DQ Write 260 333
41 DQ Mixed 200 252
167% 242 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
106GB free (System drive)
Firmware: P0330AA
SusWrite @10s intervals: 335 161 66 60 62 70 MB/s
Read 491
Write 411
Mixed 367
SusWrite 126
78% 349 MB/s
4K Read 31.1
4K Write 117
4K Mixed 44.3
166% 64.1 MB/s
DQ Read 317
DQ Write 322
DQ Mixed 239
202% 293 MB/s
90GB free (System drive)
Firmware: P0330AA
SusWrite @10s intervals: 400 119 109 79 78 79 MB/s
Read 509
Write 453
Mixed 395
SusWrite 144
84% 375 MB/s
4K Read 34.7
4K Write 116
4K Mixed 50.6
179% 67.2 MB/s
DQ Read 34.8
DQ Write 125
DQ Mixed 52.8
48% 70.9 MB/s
156GB free
Firmware: O0803B5a
SusWrite @10s intervals: 454 162 93 93 94 93 MB/s
Read 502
Write 439
Mixed 387
SusWrite 165
84% 373 MB/s
4K Read 28.1
4K Write 79.6
4K Mixed 40.9
137% 49.5 MB/s
DQ Read 302
DQ Write 342
DQ Mixed 7.9
93% 217 MB/s
4,840 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 20,095,342 SSDs tested.


Approx. $108 @ launch in Sep '15
OutletPCUS $1001 day
AmazonUS $13018 mins
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Typical Premier SP550 480GB Builds (Compare 23,011 builds) See popular component choices, score breakdowns and rankings.
Gaming 74%
Desktop 75%
Workstation 54%

Motherboard: Asus Z170-A - $350

EDIT WITH CUSTOM PC BUILDER Value: 58% - Above average Total price: $1,226

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.

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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) December 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 3 years ago.

1012 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.
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Intel Core i5-9600K $200AMD RX 590 $180Samsung 850 Evo 120GB $58
Intel Core i7-9700K $369Nvidia GTX 1650S (Super) $160Samsung 850 Pro 512GB $230
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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