Zorro II or ISA Ethernet card

[Xanxi]

Err - you got any further info on that? I don't think it's possible to overclock ISA from a card's perspective.

Yes the BBGuide mentions that some boards can take over theISA bus and clock it faster, the Speedstar for instance.
As for the NIC, etherbridge works good except that i have found that bridgboards sometime don't boot at all in supercharged amiga computers because they do not get enough power from weak psu. This happens in my A4000. After some reboots it works again. Can be annoying if you want to access the NIC anytime.

[Xanxi]

Vortex did however make a Goldengate 486slc2 @ 50 mhz.  I would love to have one the vortex boards

The 486SLC2 of the GoldenGate is pretty much the same as yours, except it is double clocked only to 50 MHz and have less L1 cache (1KB for Cyrix/TI cpu versus 8 KB on your IBM chip). The A2386 board has nothing to envy to the GoldenGate, except it has less maximum ram (8 MB versus 16 MB) and is much harder to set up.

[Xanxi]

I don't know about amidcdx and the Vortex boards, but etherbridge will only work with Commodore boards as far as i know.

About ATUtilities from aminet: this package seems to be interesting but it is only in german (i have only studied english, spanish, latin and ancient greek as foreign languages at school - german would have been useful for my amiga stuff). It claims that it is a replacement software for the bridgeboards, but there is no executable amongst this bunch of files. Any idea how to use this?

[Xanxi]

A lot of Commodore bridgeboards could be find cheap on ebay about 5 years ago. I guess they have just ended up in some cellars for now as no one was interested in them until lately.