Does anyone have any information on performance between Windows 2008 32bit and 64bit guests running on a VMware ESXi 4.1 host? We're interested in what a default OS install should be - assuming there is no other restriction.
Say for example the guests for comparison are 4GB RAM and 2 vCPU configs running Windows Server 2008 Std with the same disk sizes on the same shared storage. (PAE mode enabled on the 32 bit machine to support extra RAM.)
I'm assuming that the differences are negligible, but open to people's experiences.
Edit - OK the 4GB scenario seems too logical to use 64bit. What if the comparison guests were only 2GB of RAM?