Yeah I'm already aware of what 64 bit means. I have under the 4 gigs of ram. The maximum 3.25 gig of rams windows xp 32 bit can recognize.

I haven't ran 64 bit OS's yet because I'm afraid of incompatibility among other softwares/drivers I use for multiple items.

So now I'm just curious how it works for those of you, who do you use it.