Piuc2020:
I have been using 64-bit vista since it launched. i have been using dual core intel and amd cpus, and its plenty fast for me. and has gotten alot faster with all the updates to the OS via windows update.
you are correct, there are virtually no 64-bit apps... except for windows media center, 3rd party builds of firefox (have you heard of it?) and IE-64 which ships with windows... oh yeah, 64-bit version of windows mail and thunderbird, but yeah, as of now there's not much.
within a year we'll have ms office 64
I'm not saying you need 64-bit now, im saying there are some benifits, and as 64-bit apps start comming in, the experience will surpass 32-bit windows.
I would agree in heavy gamming, right now, 32-bit vista will be a bit faster, but that will change with time... and quiet frankly when building a new quad core computer with an 8800gtx, a few percent is an ok price to pay,, and yes i garentee he has an idle core out of 4 almost all the time, including gamming. and cirtanly a few % of one core to spare.
32-bit vista doesn't even recognize mroe than 3GB ram...
maybe u can get the media for 64-bit vista from MS for free.. so u wanna re-install? thats real fun...
anyway i think 64-bit is a no brainer, ive used both... and on a computer of this caliber you wont notice any performance difference... but 64-bit is a bit safer from viruses and such.