Pi 2 arm voltage max is 1.4v?
The default arm voltage of a Pi 1 is 1.2, allowing over_voltage=8 to raise it to 1.4.
The default arm voltage of a Pi 2 is 1.3125, with over_voltage=4 reaching 1.4. Any higher over_voltage number doesn't seem to actually raise the arm voltage. Even with all sorts of other options like force_turbo=1.
Everywhere people claim they clock higher with over_voltages over 4. Is that just placebo?