I compiled a list of CPUs that I think would be some okay fits. R20 and R15 are Cinebench benchmarks for single and multi-core. I am really liking the idea of the J4000/5000 series Celerons and Pentiums. The idea of the Asrock ITX boards with integrated processor is quite appealing. She does have a 3.5" HDD for photo storage that has to fit up to it.