Opinion (prometheus vs native zorro II)

[Zac67]

You can use a PCI right-angle adapter and a low profile card, so you can close the case.

[Zac67]

PCI video probably better stuff despite bandwidth loss during conversion to the Zorro Bus.

Most Z3 video cards use PCI video chips adapted to Zorro. The only advantage is that the PCI adaption may be fine tuned to the exact chipset.

[Zac67]

50mm fans usually fit precisely on the V3k's HS. However, you'll need to get rid of the case heat with another fan - if you find the right item you might be able to combine both Voodoo cooling and case exhaust with a slot fan. Esp. with an '040 in the case you'll need to get the airflow going.

[Zac67]

If the case isn't crammed with riser cards and PCI already you could try fitting a radial fan on top (=towards case edge) of the slots to suck air into the case through the left hand grating. Alternatively, you could also fit a fan externally to blow into the case (a PAPST RL90-12 N seems to be about right but would need severe RPM regulation to get a tolerable noise level).

In contrast to the usual slot fans, blowing into the case on the left side will get the airflow going on the CPU/mem side as well.