Testing and Results

With the Asus Z97-A USB 3.1 motherboard, we installed Windows 8.1 on a system including an Intel Core i7-4790K, 4GB of 1,600MHz Crucial Ballistix DDR3 memory, a Samsung SSD 850 EVO 120GB and an Nvidia GeForce GTX 760 2GB. We installed the latest available ASMedia USB 3.1 driver and Asus's AI Suite III, which includes USB 3.1 Boost. As both the test system and the test drive (in this case the Asus USB 3.1 Enclosure) are different to what was used for speed testing with MSI's hardware, we have left those results out of the charts below. However, you can refer here if you'd still like to compare them - the tests are the same.

*USB 3.1 Preview Testing with Asus USB 3.1 Preview Testing with Asus - Testing and Results
Cick to enlarge

We test both the ASMedia-based USB 3.1 ports, and the on-board USB 3 ports, which are powered directly by the Intel Z97 PCH. We test them both as they come, and with Turbo mode activated in AI Suite III.

CrystalDiskMark

Incompressible Data, 1,000MB Sequential

  • USB 3.1 Turbo mode (ASMedia 1142)
  • USB 3.1 (ASMedia 1142)
  • USB 3 Turbo mode (Intel Z97)
  • USB 3 (Intel Z97)
    • 793
    • 801
    • 770
    • 783
    • 406
    • 408
    • 391
    • 391
0
100
200
300
400
500
600
700
800
MB/sec, higher is better
  • Read
  • Write

CrystalDiskMark

Incompressible Data, 4K Random, Single QD

  • USB 3.1 (ASMedia 1142)
  • USB 3.1 Turbo mode (ASMedia 1142)
  • USB 3 (Intel Z97)
  • USB 3 Turbo mode (Intel Z97)
    • 37.04
    • 87.64
    • 36.53
    • 84.34
    • 23.34
    • 27.28
    • 22.16
    • 27.25
0
10
20
30
40
50
60
70
80
90
MB/sec, higher is better
  • Read
  • Write

CrystalDiskMark

Incompressible Data, 4K Random, 32 QD

  • USB 3.1 (ASMedia 1142)
  • USB 3.1 Turbo mode (ASMedia 1142)
  • USB 3 (Intel Z97)
  • USB 3 Turbo mode (Intel Z97)
    • 39.27
    • 104.50
    • 39.02
    • 103.00
    • 26.88
    • 38.97
    • 26.76
    • 32.83
0
25
50
75
100
MB/sec, higher is better
  • Read
  • Write

ATTO Disk Benchmark

Overlapped I/O, 1024KB

  • USB 3.1 Turbo mode (ASMedia 1142)
  • USB 3.1 (ASMedia 1142)
  • USB 3 Turbo mode (Intel Z97)
  • USB 3 (Intel Z97)
    • 779
    • 786
    • 767
    • 767
    • 432
    • 434
    • 408
    • 408
0
100
200
300
400
500
600
700
800
MB/sec, higher is better
  • Read
  • Write

File Transfer

2GB video file

  • USB 3.1 Turbo mode (ASMedia 1142)
  • USB 3.1 (ASMedia 1142)
  • USB 3 (Intel Z97)
  • USB 3 Turbo mode (Intel Z97)
    • 512
    • 496
    • 489
    • 472
    • 343
    • 298
    • 343
    • 273
0
100
200
300
400
500
MB/sec, higher is better
  • Read
  • Write

File Transfer

2GB small files

  • USB 3.1 (ASMedia 1142)
  • USB 3.1 Turbo mode (ASMedia 1142)
  • USB 3 Turbo mode (Intel Z97)
  • USB 3 (Intel Z97)
    • 210
    • 235
    • 209
    • 228
    • 176
    • 166
    • 172
    • 164
0
50
100
150
200
250
MB/sec, higher is better
  • Read
  • Write

Head over the page to see the Performance Analysis and Conclusion
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