~ # vmwarevim-cmd hostsvc/hosthardware | grep -A10 cpuPkg | grep description
   cpuPkg = (vim.host.CpuPackage) [
      (vim.host.CpuPackage) {
         dynamicType = , 
         index = 0, 
         vendor = "intel", 
         hz = 2833433579, 
         busHz = 333345127, 
         description = "Intel(R) Xeon(R) CPU           E5440  @ 2.83GHz", 
         threadId = (short) [
            0, 
            1, 

Here I get the info for 8 different machines to see if they all match:

for i in `seq 1 1 8`; do ssh vm30$i "vim-cmd hostsvc/hosthardware | grep -A10 cpuPkg | grep description"; done;
This works on 4.1 and 5.1 versions.