I am using an i5 2500k and my PC eats this game alive. Though, my CPU fan is running high speed constantly. So while my PC is eating this game alive it is also exorcising. My video card is GTX GT 740, nothing spectacular in terms of the latest and greatest, but again, PC is eating this game alive. I actually had to upgrade to what I have now because this game fried my old RAM and video card when it released, the old GTX 460SE just couldn't handle the strain and it finally gave up and died, shame, it had a good 4 years of solid service. I suspected my RAM was going bad now for a while before the video card died so I replaced it at the same time, the RAM was over 6 years old.
I don't replace hardware until I encounter a game that I own and want to play very badly cannot run smoothly with no video lag or just won;t play at all or a part undergoes catastrophic failure. And when i do replace hardware, I don't just grab the latest and greatest, no need for that mess. I look at the latest and greatest, see its price, then slash the price by about $300.00 to $400.00 USD and get that product instead, that is for video cards specifically. For everything else I just get the second or third or fourth most expensive item that fits my motherboard.
Shame though, when and if this mother board goes I will have to upgrade to an i7 even though it is completely unnecessary, probably won't NEED an i7 of any model for another 3 to 4 or more years.
We are at a period of time right now where hardware has eclipsed the software by such a degree that buying anything current is just asinine. I actually blame the consoles for this, were the consoles not in the way software could advance unfettered, but software always has to hang back to cater to the console hardware that does not change but every few years.
Personally, I don't understand all the insecurity surrounding the ownership of computer hardware. Meh.