Wife complaining that her 15 y/o computer was sluggish - duh. While she uses it minimally, when she does use it, she doesn't want to wait around. My 4/o Sandy Ridge i7 machine performing nicely, so rebuilt mine with a Skylake i7, and built hers out with the spare parts. Core i7 vs i5? while I don't need a gaming machine, I do need that level for video rendering. While the i7 and i5 are similar in processing speeds - particularly for the non-K version of the i7, the multi threading capability of the i7 is where it stands out. If I had built a new Skylake machine for wife, which was a consideration, I would have used an i5 for her ans her useage does not have the demands as mine.