Average Bench: 78.5% (496th of 1058)

Based on 29,307 user benchmarks.  Models: ADATA SP550, ADATA SP 550, ADAT SP550

Good average bench

The Adata Premier SP550 240GB averaged 21.4% 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 212MB/s
Avg. 4K Random Mixed IO Speed 39.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 240GB is 37.4%. 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 91.7MB/s
Avg. Sequential Mixed IO Speed 346MB/s

Average Bench

(Based on 29,307 samples)
Min Avg Max
368 Read 459 506
55.5 Write 358 453
131 Mixed 346 405
69.8 SusWrite 91.7 118
69.9% 314 MB/s
Min Avg Max
19.3 4K Read 28.8 35
31.9 4K Write 78.7 110
21 4K Mixed 39.6 49.7
136% 49 MB/s
Min Avg Max
207 DQ Read 288 340
62.1 DQ Write 268 340
77.4 DQ Mixed 212 256
177% 256 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
157GB free
Firmware: O1203AB
SusWrite @10s intervals: 176 123 52 52 52 51 MB/s
Read 354
Write 352
Mixed 310
SusWrite 84.2
62% 275 MB/s
4K Read 27.1
4K Write 52.4
4K Mixed 32.2
110% 37.2 MB/s
DQ Read 32.5
DQ Write 82.7
DQ Mixed 44.1
38% 53.1 MB/s
157GB free
Firmware: O1203AB
SusWrite @10s intervals: 190 108 51 52 52 52 MB/s
Read 317
Write 361
Mixed 304
SusWrite 84.1
60% 266 MB/s
4K Read 26.7
4K Write 53.1
4K Mixed 35
113% 38.3 MB/s
DQ Read 32.5
DQ Write 84.2
DQ Mixed 44.5
38% 53.7 MB/s
76GB free (System drive)
Firmware: P0705AB
SusWrite @10s intervals: 120 161 52 51 51 50 MB/s
Read 354
Write 279
Mixed 264
SusWrite 81
54% 244 MB/s
4K Read 14.4
4K Write 29.2
4K Mixed 24.5
69% 22.7 MB/s
DQ Read 229
DQ Write 211
DQ Mixed 215
163% 218 MB/s
29,307 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 57,592,030 SSDs tested.


MSRP ≈ $60 @ launch in Sep '15
BHPhotoUS $745 years
AmazonUS $803 years
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Typical Premier SP550 240GB Builds (Compare 5,168 builds) See popular component choices, score breakdowns and rankings.
Gaming 70%
Battle cruiser
Desktop 87%
Aircraft carrier
Workstation 60%

Motherboard: Asus Z170-K - $299

EDIT WITH CUSTOM PC BUILDER Value: 90% - Excellent Total price: $853

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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
Solid State Drive Rankings (Price vs Performance) August 2022 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 6 years ago.

Excellent (edit your comment) Add link

4 years ago.

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


5 years ago.

Really fast SSD for a good price.

1058 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 i5-12600K $270Nvidia RTX 3060-Ti $446Crucial MX500 250GB $42
Intel Core i5-12400F $160Nvidia RTX 3050 $292Samsung 850 Evo 120GB $106
Intel Core i7-12700K $378Nvidia RTX 3070 $536Samsung 860 Evo 250GB $52
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $60SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $62SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $71G.SKILL Trident Z DDR4 3200 C14 4x16GB $453SanDisk Extreme 16GB $17
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