So I bought a new Samsung N510 netbook, which comes with the nVidia Ion LE GPU.
The "LE" is notable because that version is crippled - but purely in software. I've hacked up the current nVidia drivers to enable the full power (well, as much power as the non-LE version gets). Might be of interest to anyone else who has a laptop with a "Ion LE" chipset, anyway..
Here's a link: http://www.zshare.net/download/740159720a658a85/
It's based on the 195.62 drivers; I might release newer versions as time goes by.
(Info on how to do it was found on the http://myhpmini.com site.)