Dunno. At a guess, the AGP card would be better, but things never go
quite to plan where PCs are concerned.
AFAIK, you can only have one card driver per monitor at any one time.
But you could get round this. Make Windows believe you have two
monitors, one runnning off the AGP and one off the PCI. When you want
to switch, turn off the machine and plug the monitor lead into the
appropriate port. Reboot, and go into the BIOS setup. Somewhere there
should be a setting telling the PC where to look first for its graphics
signal. Change this as appropriate.
This is an almighty kludge, but more or less this strategy works fine
for my PC with an integrated Intel 810 AGP and a V3 2000 PCI (though,
now I've got the screen refresh sorted out, I just stick with the 3dfx
card - 800x600 is easily high-res enough for GPL on a 15" screen).
--
David.
"After all, a mere thousand yards - such a harmless little knoll,
really."
(Raymond Mays on Shelsley Walsh)