I have 2 clusters of hosts with two different type of CPU. 2.6 GHz and 3.0 GHz (2670 and 2690v2)
My client want a bunch of VMs with 2.6 GHz and some VMs with 3.0 GHz in the same vAPP
Organization vDC is "Pay as you go"
vCPU limit is set to 2.6 GHz in the client vDC.
I dont understand how to do that. Help me please, what should i configure to solve this?
You won't be able to achieve this as each cluster is its own resource pool. Beside resource pool separation (which this is exactly what you wish to achieve) you can still have two vApps within the same network. Create new network on the organisation level.