What kind of speeds can you get under OS 3.9 with the FastEthernet driver? (on your local network?)
If you could suggest a measuring tool for the Amiga I could run a test when I'm back home...
I haven't done any testing lately, but I seem to recall you didn't really gain much speed using the RTL8139 vs. the RTL8029.

I used the NIC I have now from the very beginning when I expanded my A4kPPC with a Mediator PCI bus board.
ATM I can't remember the number of the RTL chip - but it is not the one that is supported in OS 4.x classic.
Using a USB ethernet adapter connected to the Deneb you can get nearly 1MB/sec on the local network.
Just one mB/sec?
With DENEB in DMA mode in a Zorro III slot and using USB 2.0 highspeed?
Nah - the difference doesn't seem that big if I copy files across USB devices compared to copying them between my HDs with the 40 mBit/sec of the UW-SCSI host on the CSPPC.
Is there a (classic) Amiga tool to measure USB transfer rates?
My guess would be around 10-15 mBit/sec...