Hi!
I have a pretty bad PC, but I was playing WoW for like 6 years so I didn't want to upgrade since it's running smooth.
However I would like to try out this game and I don't know if it's okay.
CPU: Intel Dual Core E5300 @2.60GHz 3.46GHz
RAM: 2GB, can upgrade it to 4GB from my other PC.
VGA: Nvidia GeForce 9600GT 1GB
No SSD or anything else.
Also I don't know about Rift gameplay, but in WoW I was in a 10M raiding guild, and it was just fine in raids with medium-high settings.