Average Bench: 31.2% (695th of 1015)

Based on 122 user benchmarks.  Model: SDXC

Poor average bench

The SDXC 128GB averaged 68.8% 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 Mixed IO Speed 2.2MB/s
Avg. 4K Random Read Speed 4.63MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the SDXC 128GB is 35.9%. This is a relatively wide range which indicates that the SDXC 128GB performs inconsistently under varying real world conditions.


Avg. Sequential Write Speed 39.2MB/s
Avg. Sustained Write Speed 43.7MB/s

Average Bench

(Based on 122 samples)
Min Avg Max
20.7 Read 68.4 89.1
11.6 Write 39.2 78.9
9.46 Mixed 39.1 65.9
11.1 SusWrite 43.7 75.6
35.2% 47.6 MB/s
Min Avg Max
2 4K Read 4.63 7.5
0.1 4K Write 1.73 3.43
0.23 4K Mixed 2.2 4.1
470% 2.85 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
110GB free
Firmware: 0001
SusWrite @10s intervals: 75 70 70 79 77 74 MB/s
Read 85.6
Write 69.9
Mixed 61.9
SusWrite 74
54% 72.8 MB/s
4K Read 6.4
4K Write 2.1
4K Mixed 3.2
661% 3.9 MB/s
41GB free
Firmware: 0001
SusWrite @10s intervals: 17 21 37 37 22 21 MB/s
Read 69.2
Write 20.2
Mixed 34.6
SusWrite 25.8
28% 37.4 MB/s
4K Read 3.7
4K Write 0.3
4K Mixed 0.6
226% 1.53 MB/s
122 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 30,949,489 HDDs tested.

Typical SDXC 128GB Builds (Compare 38 builds) See popular component choices, score breakdowns and rankings.
Gaming 14%
Tree trunk
Desktop 74%
Workstation 13%
Tree trunk

System: HP ENVY Laptop 13-aq1xxx


Popular SDXC 128GB systems:

How Fast Is Your HDD? (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.
Hard Drive Rankings (Price vs Performance) September 2020 HDD Rankings.

We calculate effective speed which measures performance for typical consumers. Effective speed is adjusted by current cost per GB to yield value for money. 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 HDDs. [HDrivePro]


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.


1015 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different HDDs 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 i5-9600K $195Nvidia GTX 1660S (Super) $230Crucial MX500 250GB $45
Intel Core i5-9400F $140Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $299Nvidia RTX 2070S (Super) $505Samsung 860 Evo 250GB $43
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $69SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 32GB $30
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Extreme 16GB $28
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback