I know the gaming PC world specs are pretty heafty (CPU, RAM, bus speed and network) but I would check gaming forums and ask that. I have a laptop now (ASUS) that is a gaming laptop, but because of those heafty specs I can use it as a remote lab, so if I am at customer sites and need to run WHAT IF for various technologies I can do so without any lost of power, usage, etc.

Different solution, but same processing power for gaming. Alienware, another gaming solution is strong in that area (Dell product line of course). Another solution is to build a gaming solution PC with better components that can handle dual LAN links....but gaming forums will give you the better insight into gaming as I don't do as much of that now.