I'm an AMD fan as I love cheap, but the 4 core i5 is close to the performance of the 8 core AMD, and in single threaded apps it will dominate it.
If your rending 3dmax scenes, then maybe 8 cores will give you a slight advantage.
If your planning on boxing lots of EQ toons, 8 cores might have an advantage if you spread your boxes onto different cores.
If you want the fastest per core cpu, intel wins. Can't knock the sandy/ivy bridge design.
The 8 cores from AMD disappointed me a little from what they promised, but they are getting better. Bear in mind they are priced at around the same point as a 4 core i5, so that gives you a rough idea on their power.
But ignore benchmarks as they are useless anyway)
Saying that, I went for an AMD FM1 chipset (A8-3870k) with the on-die GPU, and I can say that I love it. No discrete GPU needed, water cooled and quiet. Gives me more than enough CPU grunt (About the same as a dual core i3 in terms of raw power even though its a quad-core 3+Ghz) and the GPU is decent enough to play most games at medium, and happily runs 14 copies of EQ. I liked it so much I bought 2 of them. If for any reason I need more GPU grunt, I can throw in a GPU.
I hope your not spec'n the GPU just to play EQ. Talk about overkill
