64 bit OS vs 32 bit Max RAM?

[craigdexter1]

What is the ram maximum with a 32 bit Vista 0s as opposed to a 64 bit Vista?

 

[dustin_ds3000]

anywhere from 2.5 gig to 3.5 gigs of ram for 32-bit but for 64-bit you can go as high as 128 gigs of ram

 

[craigdexter1]

Is that really the only benefit for 64 bit O.S.?

 

[dustin_ds3000]

for now yes but in the next couple of years or maybe even sooner 64-bit will have more support than 32-bit windows because 64-bit windows will become mainstream