2 questions

[Ferris]

1. Why does increasing the I/O voltage help stability in certain situations?


2. True or False

The cooler an overclocked CPU is running, the less voltage over default is needed too keep it stable.

Thanks

[klosters64a]

Increasing I/O and Core Voltage voltage essentially increases the difference between 0 and 1 in digital circuits. The farther apart these states are, the easier it is to distinguish between them. This makes spurious transient values(noise) between 0 and 1 easier to differentiate from the real deal and ignore.

This is the reason that increasing Core Voltage helps us overclock. We're not "stepping on the gas" because the CPU needs more power. I don't have a good understanding why specifically increasing I/O voltage helps. I think it's safe to assume that it does the same thing that upping Core Voltage does. However, there is probably more to consider: When K6-2's were newish, some folks found that decreasing I/O voltage helped in OCing them.