Best Gaming PC

I think it might be preferable for GTA V.

New Consoles got 8 cores CPU. 6 of them are used for games. I know that basically they are ULV processors, but i7's are quad core with HT. Which translates to 8 threads. I know that it is not the same as 8 physical cores, but it is close enough to console design. Correct me if I'm wrong, but as far as I remember all core i5's are or dual-core HT, or quad-cores without HT.

Also the GTA V on PS3 and X360 refreshes physics 30 times per second - it will be increased to 60 times per second on PS4 and XBO - probably also on PC. (unless it will be a 7th gen port, or it might be refreshed every frame) Which included with increased numbers of cars on the streets, higher draw distance (which also means more objects to calculate physics, and more AI to handle) means much more load on the processor. That's why for GTA V core i7 might be preferable. It is not entirely sure how it will be optimized, but my guess is that game will prefer to have 6 threads.

Also future games might be often optimized for using 6 cores. Today there is almost none difference between core i5 and i7 in games. But in 12 to 24 months there will be, and in some titles it will be huge. (especially the poorly optimized PC ports) So if you want powerful gaming computer - I would recommend core i7.