Hi Jangita, > Difference between ia64 and amd64? I'm moving to servers with larger > memory >4GB so want to move to 64 bit. This are two different, binary incompatible 64-bit architectures. However, also many intel-processors use amd64... In fact, I think the only "ia64"-processors are the Itanium and Itanium II processors -- everything else uses amd64. Axel