I don't think the iGPU is relevant to temps in these scenarios. It would have been almost completely idle in these tests, and silicon is a terrible thermal conductor, so even a hot GPU would have little impact on the CPU cores.
Originally Posted by RussianHak
Thing is, this guy is Extra Careful. There can never be to much insurance.
If he was being extra careful he probably wouldn't have cut the IHS off his CPU with a razor blade; he'd have sanded through it, leaving a bare die, and a convenient shim.
Anyway, like I said originally, tape is not necessary, but it's certainly not going to hurt anything.
Originally Posted by finalturismo
Its not Tim, its the 3d transistors causing more heat
I suspect it's the die shrink more than the type of transistors. 3D/tri-gate transistors are likely reducing leakage and temps relative to what they would be on more conventional types, assuming a similar lithography node.