Definitely not an Intel machine. That is a PPC (PowerPC) machine. It will run Leopard (10.5) just fine, however it will not run Snow Leopard (10.6). You have already determined the processor in your machine it is a PPC 970. I'm not sure which revision the 7.2 indicates, but I'm sure someone else can point it out if you need that specific of information for some reason.
Bottom line: Not a Mac Pro (a G5) and thus not an Intel processor. Will run 10.5 (Leopard) but not 10.6 (Snow Leopard) or any Intel only applications (Such as VMWare Fusion, or Parallels).