The online retailer announced that the new OS sold more pre-order copies in its first eight hours than Vista managed in its whole pre-order period.
In fact, it has managed to mark its place as the biggest grossing pre-order product of all-time at Amazon UK, even storming past the likes of the Harry Potter books.
As Amazon.co.uk managing director Brian McBride noted, that is one heck of an achievement for a software product, but may also highlight just how many people are desperate to scramble away from the less than impressive Vista OS we've had to deal with for the past few years.
Some stores are set to open at midnight tonight to sell the new software, which will be priced at £79.99 for the Home Premium edition. It will go up to £99.99 on 1 January 2010 though, so get in quick if you want the make the move.
Compared to its predecessor, Windows 7 goes easy on system processes, so much so that it can work on netbooks – something Vista struggled to do successfully.
It also has some Mac-like additions, and support for multi-touch interfaces for touchscreen devices.