quick question about minting via staked shares. Will a faster CPU with multi-cores and multi-threads mint from staked coins faster?
Short answer: no.
Basically, the staking is done in a way that most inputs to a stake computation come fixed from the last block, the variables being your coins txid and the time. So as long as your CPU is fast enough to iterate over your wallet once a while (and unless you have gazillion of Cachecoin addresses, this iteration is fast, so even very weak CPU is good enough), then you're not limited by CPU at all and having a more powerful one won't help with staking.