Read a dialogue between two crypto currency miners and answer a question on it: Miner 1: Hey, I'm thinking of upgrading my rig for mining. Any thoughts on which model would be better for mining different coins? Miner 2: Well, the CPU isn't really the key player in mining. It's all about this one. Miner 1: Ah, got it. So, we're talking about the one that handles the heavy calculations? Miner 2: Exactly! The speed of it is crucial for efficient mining. Miner 1: Makes sense. So, which one would you recommend for mining specific coins? Miner 2: It depends on the coin. Some coins require more processing power, while others benefit from higher clock speeds. Miner 1: Interesting. So, we need to find the "right one" for each coin's algorithm. Miner 2: Absolutely. One with higher gigahertz can handle complex calculations faster, resulting in better mining performance. Miner 1: Great! Let's do some research to find the ideal one for each coin we want to mine. Question: What computer component are they discussing?