nForce3 Pro 250 does have gigabit network
edit: to expand on the gigabit situation a little, if you want a gigabit solution, the very efficient PCI implementation of the nForce classic and nForce2 chipsets may be your ticket to ride for the meantime. I got PCI throughput upwards of 120Mb/second from my SCSI card to my PCI bus with both nForce and nForce2, which approaches the practical limit of PCI when you take overhead into account. That would be *almost* enough bandwidth for gBE to run free, if you weren't using other PCI devices.
My work fleet of ~75 systems is presently about 30% AMD. I haven't seen any CPU failures, and the
systems are so stable it's uncanny :Q Of course, I don't have spyware, viruses, trojans, pr0n dialers or five flavors of media players installed either... we are running a pretty tight ship: Win2000, Office2000, Acrobat Reader, and FilZip on most systems, as well as corporate-edition McAfee VirusScan/ePO Agent. I don't play with skimpy off-brand power supplies or memory.
I have another three of these hummers due in for building later this week, with 2200+'s this time around. They have been so reliable that we're not even going to bother changing them for next fiscal year, other than maybe going to 2400+'s or 266MHz-based 2600+'s (and there will be two or three with 15000rpm Cheetah 15k.3 SCSI drives for my super-users, yeah baby!

Who loves ya?!

).
If there are any troublesome systems in my fleet, it's the Celeron2 566's on i810... some of them are getting
strange, like they're senile or something :Q LOL! The P3's on i810E are doing ok, and so are the Cel2 600's on VIA. We've got one P4/RDRAM that's hopeless, it's a 1.3GHz Williamette.

There are undoubtedly "smooth" P4's out there, but this isn't one of them
