Hi, Mario:
The model that preceeded the 280 G2 was the 280 G1.
Here is the link to the quickspecs for the G1 so you can see what hardware the G1's came configured with.
http://www8.hp.com/h20195/v2/GetPDF.aspx/c04441676.pdf
HP is using a G# to designate the models now.
For example 280 G1, G2, the next one that comes out will most likely be the G3, and so on.
