There's no way to overclock without voiding your warranty; it's correctly assumed by AMD and Intel that most of the people who will be overclocking will be doing so to a degree/in a manner which will decrease the lifetime of the CPU greatly, or possibly even damage it directly. You're modifying their product in an unsafe manner, therefore, you will not be allowed to exchange it when it breaks.
4570, as far as I know, is just a little slower than the 4670. It's not too much of a downgrade, really, but the price difference is too little to really justify it (between 4670 and 4570, not 4670k).
So, if you're not overclocking, then you should probably get a 4670 and whatever the closest thing to Z87 is without the overclocking features.
4570, as far as I know, is just a little slower than the 4670. It's not too much of a downgrade, really, but the price difference is too little to really justify it (between 4670 and 4570, not 4670k).
So, if you're not overclocking, then you should probably get a 4670 and whatever the closest thing to Z87 is without the overclocking features.
in a perfect world we would all be piles of sand with no ability to form coherent bodies of body