Time to Convert 13 minutes movie in Compressor

I am using the method outlined in "HD DVD Movies on a 4.7 G DVD" article;
and my test conclude that this is the way to go.

I have submitted my 13 minute movie from an XDCAM 24p QT file
and I am hoping it will be done when I get in to work tommorow.

Any ideas on how many hours per minute of footage Compressor will take
on a lowly Dual G5 2.5 with 2 G Ram??