JoJoGabor
Expert
Expert

I wouldnt expect to get more than 20 VMs on that host. THe contention is more likely to be memory bus or Disk/IO. Ideally get a capacity plan run on your VMs such as Platespin Recon or VMware Capapcity Planner, this will give you a good idea of consolidation ratio you can expect by monitoring your existing servers.

Also Note that you will get better performance by configuring as many VMs as possible with a single vCPU to prevent VMs waiting for simulataneous CPUs to become available. Onlyincrease to 2 or even 4 if the application is really suffering.