To add to the potential problems…so I’ve heard (read) that with the new mobo’s the voltage on the PCI slots of today are different. For example, some PCI based audio interfaces required somewhere around 5 volts, but slots on newer mobo’s are only around 3.5 volts (or something LIKE that).
This is in addition to problem with older PCI based cards, where the manufacturer has decided to not continue to develop 64 bit drivers.
[a little OT here]
I had decided to not upgrade from what I have for a few reasons…one of them being is I have around 7 full fledged/full featured PCI based audio interfaces, which were designed to use 5 volts, and stopped being able to run past Win XP 32 bit. I didn’t want to abandon them just to go to 64 bit.
Another reason for not upgrading is that I was on a personal quest to stop the never ending discard/upgrade path. instead I started experimenting with using my old single core DAW laying around as a 2nd system with various methods available (audio/midi networking, Ethernet networking, syncing machines etc). It worked out so well for me, I decided to build a replica of my more powerful quad core machine, and then another…the replica’s were inexpensively built with used components. I now have a combined power of 12 CPU cores, and 12 GB of ram, and I’ve come to realize I don’t need to upgrade to a 64 bit system at all just to have more resource available.