It depends, some internal WiFi have very good antennas, and pick up strong signals. But then again, some PCI ones are better since the antennas are outside of the chassis. I would say there fairly equal.
If you're talking purely desktop, then I'd have to go with PCI... Easier to upgrade to another format, can also add a higher gain antennae to the card as well...
If you're talking purely desktop, then I'd have to go with PCI... Easier to upgrade to another format, can also add a higher gain antennae to the card as well...