What can be used instead of flux?

In the realm of cryptocurrency mining and hardware optimization, "flux" often refers to the flux capacitor, a theoretical component from the "Back to the Future" franchise that's humorously referenced in relation to the need for high-efficiency mining components. But seriously speaking, when considering alternatives to improving mining efficiency or hardware performance, what are some practical options? Could we utilize advanced cooling systems to reduce heat and improve hashing rates? Perhaps more efficient power supplies or GPUs specifically designed for mining? Additionally, could optimization software or algorithms provide a similar boost, negating the need for a theoretical "flux" solution? Let's delve into these potential alternatives and discuss their viability in the current cryptocurrency landscape.