Today we're going to be looking at how Network Cards (NIC's) handle overclocking, and if they might be the thing that's holding you back from getting higher speeds. As you already know, every peripheral in the PCI slots of your computer is linked to the FSB, and when you're going past 133 MHz (with most boards) you're going to be running the PCI bus out of sync. This means the PCI cards will no longer running at their specified speeds - they willl be running faster then the are supposed to.