[CentOS] Download of updates

Greetings,

I have noticed that Fedora updates with "yum update"  often runs into 500+MB
of downloads.

I would like to know from the members of this list as to how much should a
CentOs update size would be if I download a  DVD ISO image and install with
it


(As it is a DVD download -- I can't use Bittorrent as I am sitting behind a
firewall which I don't control -- takes more than 26 hours for download)

regards

Rajagopal
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