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Test Configuration

USB Technology: Multi-TT Hub Goes Head-to-Head With Single-TT
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Test System
Processor Intel Pentium 4, 2.0 GHz
256 kB L2-Cache (Willamette)
Motherboard Intel D845EBT, Intel 845E chipset
RAM 256 MB DDR/PC2100, CL2, Infineon
Controller i845E UltraDMA/100 controller (ICH4)
Display Adapter NVIDIA GeForce2 MX 400
Network Card 3COM 905TX PCI 100 MBit
Operating System Windows XP Pro 5.10.2600
Service Pack 1
Benchmarks and Tests
Performance Measurements HD Tach 2.61, c't h2benchw
Drivers and Settings
Graphics Driver NVIDIA reference driver 29.42
Drivers Intel Application Accelerator 2.3
DirectX Version 9.0
Resolution 1024x768, 16 bit, 85 Hz refresh

As always, our benchmark programs are either self-explanatory or easy to understand. However, we would like to briefly discuss this particular testing procedure:

We ran both USB hubs in four different configurations and with two different devices designed primarily with home and business users in mind. One of them was an external USB 2.0 hard drive from ValuePlus called SPIO. The other was a standard Memory Stick from Hana Micron (USB 1.1).

We ran the hubs in the following four configurations:

  • Simple benchmark without any peripheral devices. No other USB devices were connected to the hub.
  • Test with one device (e.g., SPIO), while data is written to the second device (e.g., Memory Stick).
  • Test with one device while a USB 1.1 webcam is active.
  • Test with one device while the webcam is active and data is written to the second device.

The different configurations create different load states that could very well occur during normal use and that the USB hubs would have to cope with.

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