Have you used both in the past? If so just use which ever you like best!
with 6GB (why 6GB btw? overkill? and surely you'd go to 8GB for dual channel?) both will run fine.
(or Mac OSX - not decided yet)
I find 8gb to be faster on an x64 system.. I'm wondering if this is to do with the physical addressing.
My question is, is running 4GB under an x64 system identical to running 2GB on an x86 system, because the addressing of an x64 is double? If this is the case, 8GB would be beneficial would it not?
IE is available in 64bit so why are you using 32bit?