Welcome, Robert! The primary reason for using isopropyl alcohol on CPUs is its fast-evaporating nature, which ensures no residue remains i read about this on
cpulifes site. While higher concentrations might evaporate even faster, 70% isopropyl alcohol is indeed effective for cleaning CPUs. It's essential, however, to ensure that the alcohol doesn't drip onto other parts, and always use a lint-free cloth. Hope this clarifies your query!