I’m a long-time holder of a small Peercoin stash, which I use to mint a block every 4 months or so. I also believe that this coin is ridiculously undervalued when considering its efficiency and sane economics, compared to all the shitcoins out there. So I want to get hold of more Peercoins by mining them.
Lets assume that Peercoin stays this cheap for a while longer and difficulty stagnates or even falls a little. What Hashrate would I need to be able to mine a block at least once every 3 months with >90% probability, and what would be the formula to calculate this properly? What kind of miner should I get these days? My knowledge about the cryptocurrency universe is a bit outdated, so I would appreciate your help.