To evaluate the impact of different Vmin mechanisms on different operating points,
we add two operating modes to our hypothetical 2-core system.
Each operating mode is constrained to the same power envelope as the 2-core SNB operating at 700mV. Operating a single core at 850mV,
for example, requires the same power as 2 cores operating at 700mV, likewise, 4 cores at 590mV.