On September 27, Gigabyte released a new utility, LAN Optimizer.

See GIGABYTE LAN Optimizer and GIGABYTE - Media - News - Motherboard

The utility is only available for motherboards that use the Realtek LAN chip 8111E (and newer).

I have a EX58 board, which has the Realtek 8111D.

Is anyone aware of another software program that will prioritize the network traffic of an individual PC (Windows 7, x64), and that will work with the Realtek 8111D chip?