Average Bench: 78% (502nd of 1057)

Based on 23,791 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Good average bench

The Adata Premier SP550 240GB averaged 21.9% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Adata Premier SP550 240GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 209MB/s
Avg. 4K Random Mixed IO Speed 39.5MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 240GB is 39.2%. This is a relatively wide range which indicates that the Adata Premier SP550 240GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 89.3MB/s
Avg. Sequential Mixed IO Speed 345MB/s

Average Bench

(Based on 23,791 samples)
Min Avg Max
359 Read 460 509
55 Write 352 454
116 Mixed 345 406
71.6 SusWrite 89.3 118
69.4% 312 MB/s
Min Avg Max
19.1 4K Read 28.6 36.3
28.3 4K Write 77.2 111
22 4K Mixed 39.5 50.2
135% 48.4 MB/s
Min Avg Max
156 DQ Read 283 333
63.5 DQ Write 266 340
70.2 DQ Mixed 209 255
175% 253 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
139GB free (System drive)
Firmware: O1203AB
SusWrite @10s intervals: 115 185 54 54 55 55 MB/s
Read 500
Write 393
Mixed 370
SusWrite 86.1
75% 337 MB/s
4K Read 32.8
4K Write 106
4K Mixed 48.4
168% 62.5 MB/s
DQ Read 318
DQ Write 331
DQ Mixed 84.2
130% 244 MB/s
43GB free (System drive)
Firmware: P0705AB
SusWrite @10s intervals: 153 145 54 52 53 44 MB/s
Read 469
Write 400
Mixed 370
SusWrite 83.3
74% 331 MB/s
4K Read 31.3
4K Write 97.4
4K Mixed 43.8
155% 57.5 MB/s
DQ Read 308
DQ Write 330
DQ Mixed 248
206% 295 MB/s
23,791 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 44,075,775 SSDs tested.


MSRP ≈ $60 @ launch in Sep '15
BHPhotoUS $744 years
AmazonUS $8023 months
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Typical Premier SP550 240GB Builds (Compare 74,190 builds) See popular component choices, score breakdowns and rankings.
Gaming 90%
Nuclear submarine
Desktop 87%
Aircraft carrier
Workstation 85%
Aircraft carrier

Motherboard: MSI B450 TOMAHAWK MAX (MS-7C02) - $110

EDIT WITH CUSTOM PC BUILDER Value: 68% - Good Total price: $873

Popular Premier SP550 240GB 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) June 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.

Excellent (edit your comment) Add link

2 years ago.

if corrupted , website offers a tool to fix it for free unlike sandisk products


4 years ago.

Really fast SSD for a good price.

1057 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 i5-11400F $220Nvidia RTX 3070 $500Crucial MX500 250GB $40
Intel Core i5-11600K $259Nvidia RTX 3060-Ti $400Samsung 850 Evo 120GB $78
Intel Core i7-11700K $380Nvidia RTX 3080 $700Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $95SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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