Im running a 2500k at 4.3ish with a CM 912+ in push/pull and happily devour pretty much anything. I don't foresee a CPU upgrade anytime soon. I had a pair of 6950 (the older 1 gigs) and just put in a 7970 and another 4GB of RAM for less than 400 bucks and only did that because BF4 is a resource monster. Everything else was fine.