My GA-965P-DS3/S3 has a single 2Gig RAM stick fitted. Has this doubled the bus memory (the manual isn't clear). Answered
What's behind this question is that I'm going to shift from keyboard to dictation for reasons of disability. I'm told I need a lot more memory (not quantified) for speech. The board's max is 4Gig.
I don't use my 'writing machine' for internet, just for MS Word and playing my my CDs top a headset, sometimes both at the same time.