What is going to be faster 8 core 2008 Mac pro or Quad core i7 with virtual cores?

[Ted King]

Edit: Made a goof earlier. This series of videos may be helpful:

http://www.youtube.com/watch?v=HBivTJ0sitM&feature=related

And this may help:
http://forums.macrumors.com/showthread.php?t=745426&highlight=install+quad+core+in+mac+pro+1+1