Onboard Motherboard NIC

Are there benefits to any of these NIC configurations?

A. 2x onboard Realtek 1gb
B. 1x onboard Realtek 1gb, 1x Intel PCIe 1gb
C. 2x Intel PCIe 1gb
D. 1x Dual port Intel PCIe 1gb


My setup only requires 2 NICs, and will be fairly modern hardware, most astaro features enabled with the WAN connection as a 50mb down / 10mb up cable connection.

Thanks for any insight.