MattiasZ,   The reason it isn't provided is that the iDRAC Performance Tab gets data from the Intel Management Engine, which doesn't include AMD processors.    I apologize I don't have a better answer.    
Hello. When is DELL going to provide full performance monitoring for AMD cpu's also? Right now only CPU usage is monitored compare to intel coequal server that have all four options enabled? Regards Mattias  
amd and idrac monitoring