I have the Abit BE6 motherboard (not BE6 II). I've got the Viper 770 on AGP, MX300 on PCI 1. Network card on PCI 3 and a 56 modem (which I no longer use) on ISA. MX has been in PCI l for about a year. My Promise 66 controller (which was built on motherboard) is sharing on PCI 3 with the network card. I just read in my motherboard that PCI 2 doesn't share with anyone. It makes sense to move the soundcard to PCI 2 but if I've had problems, I'm not aware of them.