Every program you use stores its working data in RAM before loading it into the CPU’s internal cache, and programs that use a lot of it can churn through RAM like butter. With RAM, there are many knobs to turn, but it’s also much safer because they don’t produce much heat. RAM is quite a bit more complex than CPU or GPU overclocking, where you’re merely cranking a dial and praying your fancy all-in-one watercooler doesn’t turn your system into a space heater.