[alxv]

You only need 2 processors, since each cores gives you 2 vCPUs. "For the n1 series of machine types, a virtual CPU is implemented as a single hardware hyper-thread" --https://cloud.google.com/compute/docs/machine-types

[jackmott]

so the bare metal might still have 4, such that it could host 2 of these VMs at once I guess.