Average Bench: 78.1% (455th of 1011)

Based on 11,755 user benchmarks.  Models: ADAT SP550, ADATA SP550, ADATA SP 550

Good average bench

The Adata Premier SP550 120GB averaged 21.8% 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 193MB/s
Avg. 4K Random Mixed IO Speed 38.1MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata Premier SP550 120GB is 38.5%. 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 92.1MB/s
Avg. Sequential Mixed IO Speed 324MB/s

Average Bench

(Based on 11,755 samples)
Min Avg Max
377 Read 469 510
305 Write 366 417
167 Mixed 324 383
84.7 SusWrite 92.1 102
69.6% 313 MB/s
Min Avg Max
21.5 4K Read 28.8 40.3
31 4K Write 82.9 117
17.5 4K Mixed 38.1 51.2
136% 50 MB/s
Min Avg Max
44.2 DQ Read 266 330
97.6 DQ Write 252 325
49 DQ Mixed 193 263
163% 237 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
41GB free (System drive)
Firmware: O1230H
SusWrite @10s intervals: 141 158 56 55 52 56 MB/s
Read 500
Write 208
Mixed 384
SusWrite 86.3
65% 295 MB/s
4K Read 27.7
4K Write 85.7
4K Mixed 39.6
138% 51 MB/s
DQ Read 274
DQ Write 222
DQ Mixed 184
155% 227 MB/s
69GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 189 123 57 55 55 55 MB/s
Read 480
Write 382
Mixed 351
SusWrite 89.1
73% 326 MB/s
4K Read 26
4K Write 79.9
4K Mixed 34.8
126% 46.9 MB/s
DQ Read 281
DQ Write 301
DQ Mixed 236
193% 273 MB/s
25GB free (System drive)
Firmware: O1230C
SusWrite @10s intervals: 274 63 56 53 56 57 MB/s
Read 494
Write 377
Mixed 322
SusWrite 93.1
72% 322 MB/s
4K Read 24.1
4K Write 73
4K Mixed 34.7
120% 43.9 MB/s
DQ Read 276
DQ Write 330
DQ Mixed 236
197% 281 MB/s
11,755 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 19,132,121 SSDs tested.


Approx. $40 @ launch in Sep '15
OutletPCUS $4011 hrs
AmazonUS $493 mins
EbayUS $497 mins
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Typical Premier SP550 120GB Builds (Compare 4,756 builds) See popular component choices, score breakdowns and rankings.
Gaming 71%
Desktop 65%
Workstation 48%

Motherboard: Asus H170-PRO - $105

EDIT WITH CUSTOM PC BUILDER Value: 56% - Above average Total price: $803

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) November 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.

1011 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 $148Nvidia GTX 1660S (Super) $234Crucial MX500 250GB $45
Intel Core i5-9600K $210Nvidia GTX 1660 $210Samsung 850 Evo 120GB $150
Intel Core i7-9700K $340Nvidia GTX 1660-Ti $260Samsung 860 Evo 250GB $49
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Ultra Fit 32GB $14
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