According to this article:

http://www.nbr.co.nz/article/access-ultra-fast-broadband-critical-aspect-property-sale-dc-149072

You can download 1.5Gb of data on dial up in 7 hours 26 min - anyone seen a 512kbps dialup plan?

By my maths it would take more than 63 hours

They also say that on a 100mbps UFB plan you can download 1.5Gb in a couple of seconds when in fact it would take several minutes.