by -swift- » Wed Jun 10, 2015 10:18 pm
If you are buying both new motherboard, CPU, etc, considering the time, I wouldn't buy neither of those and would wait a bit more for Intel's new generation Skylake processors, Skylake-S series will be desktop processors (Core i7-6700K / Core i5-6600K). Skylake should be announced somewhere mid-august and able to purchase in late August/September. It will also support DDR4 and some other new things... Unless you are really in a hurry to buy a new CPU, in your place, I'd most definitely wait for Skylake.
i5 vs i7... Sure, i7 wouldn't hurt as it has hyper-threading, but for gaming, i5 is definitely more than enough. Small number of games are able to utilize more than 4 cores, where you would see a benefit of HT (higher FPS) and some games apparently don't work so well with HT enabled (slightly lower FPS and stuttering). Synthetic benchmarks don't mean much if he'll be using apps or do tasks that don't need/support more than 4 cores. To sum it up, i7 is definitely better overall, but for most things i5 will be more than enough or equal to i7. Only for the tasks that are hungry for more CPU cores, you will see the real difference and benefit of i7. Btw, I think i7 might help you more with streaming (depending on the stream quality).