Hello, I want to know if anyone of you knows of any references regarding the change on the computational time required for some standard ab-initio calculations like water, benzene, coronene or others, against the year they were done using the same level of theory and of course taking advantage of the increase in computational power. Thanking your invaluable help, Mauricio Esguerra N. Grupo de Quimica Teorica Facultad de Ciencias Universidad Nacional de Colombia