Hello BI,
A3 needs a lot of RAM. A solution for that could be to use the Readyboost-functions of Windows. Readyboost allows Windows to use devices with fast read'n write setting to operate as Ram.
Readyboost supports up to 4/8gb devices, its also possible to use fast HDDs/SSDs.
More information:
http://blogs.msdn.com/b/tomarcher/archive/2006/06/02/readyboost-q-a.aspx