Hyper-V cluster with different cpu

i have these three servers with different CPU :

First Server : Intel Xeon E5645 2.4Ghz 12M
Second server : Intel Xeon X5660 2.8Ghz 12M
Third Server : Intel Xeon X5550 2.6Ghz 8M

I want to install an hyper-v cluster with these servers.

Is there any issue with this? How to be sure that all features will be functional despite the different cpu?

Thanks for your help

There is no problem having different CPUs across hosts. If you plan to live migrate VMs between the hosts, you will need to check the box under the Processor Compatibility section in the settings menu for the VM.

http://www.thomasmaurer.ch/2013/04/windows-server-2012-hyper-v-configure-vm-processor-compatibility-via-powershell/