This is very good, thanks EMC2
I already did the high frequency ceramic caps, both in parallel to the bulks, and in the CPU socket
.
A total of ~50 caps (100pF and 10nF).
Before adding high frequency caps: max CPU clock was 1035MHz.
After adding the caps, max CPU clock "jumped" to 1050MHz (a big 2.5%, waow!).
I then added bigger electrolityc capacitors, but is did not help. At one point, the quality (ESR and ESL) of the caps is more important than the capacitance value itself.
I though of increasing the PWM freq of the HIP to 1MHz, its maximum, but never decided myself to go through the trouble (as you said, is it worth it?).
The vcore stabilizer is intended to reduce (or suppress
) the drop from 1.13V idle and 1.03V load, both stabilized. You are right, it will not affect noise.