[revelation]

That's crazy. Do modern cores not also use local, integrated power regulation? I think I remember an Intel PR release about that, but I don't know the detail.

[pstrateman]

> Process：Manufacturing with 28nm process

standard Vcc for 28nm is 850-1050mV (varies based on the exact process)

so yeah more like 100A and probably that's all going through the pins without on die power regulation

[xiaopanga]

The inductors are still too big to be on-chip

[hatsunearu]

Intel toyed around with fully integrated inductors even in production but I think they kicked them off chip for thermal reasons.

[brandmeyer]

IIRC, the only part they replaced was the controller IC itself. All of the main power components (switching transistors, filter inductors and capacitors) remained off-chip.

Consider that the VRM's have as much or more silicon in them than in the host processor, and they have completely different breakdown voltage and switching speed requirements relative to a CPU.

[mattthebaker]

Intel only recently introduced this feature, and it surely required a lot of R&D. At the time they were most likely the only one, and may still be.

[xorblurb]

Then they removed it in their most recent chips...