Even tri-core CPUs are a thing!

[PinkFreud]

In the blog post referenced by #1058, Xe mentions I didn't actually think that hardware vendors shipped processors with an odd number of cores - but AMD did this early on, with the Phenom Toliman and Phenom II Heka tri-core CPUs.

Yes, it's pretty unlikely you'll encounter clients using those old CPUs at this point, though 'unlikely' != impossible, of course.

ARM's pretty unusual in how they stack disparate CPU cores into a single package already, so I'm not entirely shocked to see the occasional device with an odd number of these cores.