a no brainer simply because you have a Z77 motherboard get the i5.
too bad, i was looking forward to another flame filled troll thread. . . .
ha, well from my experience and many others... People that get AMD eventually move to Intel anyways. Once you move to intel.... you never go back.
AMD does not have an equivalent CPU. Their current generation more or less competes against Intel's Core 2 Duo / Quad CPUs rather than the Core i3/i5/i7 series. There are some specific applications where an AMD can perform just as well as (or maybe slightly better) an Intel CPU, but overall AMD CPUs are 2 or 3generations behind Intel CPUs in terms of overall performance.