RyanDavidson :
Gaidax :
I5 gives you a more solid performance across the board, while FX compared to that is a more bumpy ride, it can be slightly better, but it can also be quite worse in different games/apps.
I'm just unsure as the consoles have AMD hardware and an AMD 8 core cpu 8 weak cores they are but still 8 cores where as the intel is amazing now but I'm just hearing countless amount of people saying games will be optimised for 8 cores or I could overkill and go for an i7 but kinda don't want to do that. I'm just unsure :s
There is no need to be intimidated by the consoles really - consoles have exactly what you said - extremely weak 8 core CPU - it is no match for I5 even in the synthetic multithreading.
The proof for that are the latest BF4 beta benchmarks where I5 is pretty much wiping the floor with FX in just about any mode except for the very extremes (like 64 players and such) and even then it's pretty equal.
I5 covers all the bases, while FX has it's Achilles heel in games which require good individual core performance. Problem for FX is that it's multithreading advantage seems to be a tough nut to crack for most game devs, so it tends to suffer.
In plain language - you won't find a game where I5 blows, you may find a game where FX blows, though.