I have a windows 2008 64bit VM with 4 vCPU's that seems to only ever use up to 50% of combined CPU resources. Each CPU seems to be evenly balanced but will never go beyond 50%. I don't see and setting such as a resource allocation limiting the amount of CPU given. I am running this VM on a dedicated ESXi v4.1 host. Doesn't seem to be any contention. Any ideas why it seems to be limited to just 50% of the available CPU? There are no other VM's running on this host at this point...