Appears that the CPU on the i5 and i7 models is throttled by about 20% or more under load. I assume this is true and would occur under stress. My question though is, how evident is this under normal daily usage, not playing games. Things like running a VM, or doing some DB work etc. I don't think I have ever noticed it on the SP4 i7, so am wondering if this is a real issue outside of the world of benchmarks and gaming.