[mdlug] OT: Gigabit Ethernet - Worth it?

[Stan Green]

Oh ye experts of the network....

I do a lot of data transfer of large files (4gb - 40gb ) and large sets of 
data (100gb+). These transfers take some time. I'm thinking of upgrading some 
of the network to Gigabit Ethernet. I've read conflicting information about 
Gigabit Ethernet; some say it is faster and some say the PC is the 
bottleneck. My PC's tend to be a few (3-5) years old. I transfer data over 
both NFS and Samba. Most of the large files go over Samba. If I replace the 
NIC cards, cables and hub, should I expect to see a BIG difference in 
transfer speed?

Thanks,
Stan