> > My opinion is to first determine a few issues. > > How much RAM will it need? If over 3GB of physical RAM, > consider 64 bit. > Are there third party applications you need to run on it? If they are > 64 bit, that answers the question too. If 32 bit, are they > supported on 64 bit OS? Do they have different versions for > 32 and 64 bit? > lots of good info to ponder back from those that responded. what i a getting at is, why would one use x86 64 bit Centos version 4.7 when one can get the same in x86 64bit Centos 5.2 or later version? is there a reason to stay with the older version other than for specific deprecated hardware issues or something else? is 64 bit Centos 5 just plain better OR would some of you choose 4.7 over 5.x and why? - rh