Hi i have Samsung Notebook 3 NP505e5Z!
CPU : AMD A4 1.96GHZ (2core)
RAM : 4gb
VRAM : 1 GB AMD HD RADEON

shall i install ubuntu 12.10 32 bit or i should go for 64 bit, also i wanna utilize full hardware resource....

Is PAE works well in 32bit, if i go for 32 bit can i utilize my 4 gb? also can it support virtualization?
The thing which resist to go 64 bit is application compatability and availability.. please suggest me friends....