[CentOS] PCI ethernet card for CentOS

> I see that there are many Realtek RTL8169S gigabit cards
>going for a song on eBay.


I've always liked and used Realtek cards, and I use the RTL8169S in my
servers. However, the RTL8169S has one problem: overheating. If you buy any,
make sure they include a heatsink. Those without a heatsink are prone to
locking up if the temperatures inside your case get too high.