The G5 comes with a 10/100/1000BASE-T Ethernet port standard, so it already has gigabit on the logicboard. And as others have pointed out, even the fastest cable connection, up to 4Mb/sec, won't even come close to maxing it out. Brian Conner -----Original Message----- From: Power Macintosh G4 List [mailto:G4 at lists.themacintoshguy.com] On Behalf Of Jerry Bunn Sent: Monday, July 12, 2004 7:30 PM To: Power Macintosh G4 List Subject: [G4] PCI-X Gigabit Ethernet Card I'm looking into purchasing one of the new G5's and was wondering if anyone knows if adding the PCI-X Gigabit Ethernet Card ($100 option) with a cable modem hook-up would make any appreciable internet surfing difference.