Getting quite decent performance on my Mac mini G4: gem0 at pci2 dev 15 function 0 "Apple Uni-N2 GMAC" rev 0x80: irq 41, address 00:0d:93:60:dd:1a bmtphy0 at gem0 phy 0: BCM5221 100baseTX PHY, rev. 4
With an msk(4) at the other end and a decent gigabit switch in between, iperf tells me I'm getting 92 Mbit/s in one direction and 85 Mbit/s in the other.
