10 box machine setup, first timer help

[heyaz]

So I now have 10 90s and am looking to 10 box on a single machine.

I'm still using my old q6600 from 2008 that I bought to box in BC. Goes without saying it struggles to five box even with all settings on low, and low resolution.

I've already got plenty of monitors (several 27" LEDs). So I need the box.

I'm understanding more and more how CPU bound WoW is, so I'm thinking of putting more money into the CPU than into the GPU, and upgrading the GPU later if need be.

I've read over Tom's hardware and all their machine setups, but none are wow specific or especially not multiboxing specific, they mostly focus on showing you the FPS you get.

I want to go with at least 32GB RAM, and more than enough CPU power. But I don't know how important the RAM speed is; you can go with the fast stuff and be limited to 16GB or the slowest stuff and easily get 64GB on the cheap. Also with the several variations of i5s/i7s, what with ivy and sandy bridge, or go server-grade stuff.

I'm not asking anyone to teach me everything but just point me in the right direction so I don't make costly mistakes (like going for some super video card and a certain generation of CPU that limits me).

Again I want to run all 10 clients on one machine. Just some pointers would be nice, I can figure out the rest I think.

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so tl;dr, want to 10 box on one machine, want to know things like:
1. best CPU setup, which generation of i7, dual CPU even or higher core setups (more than 4), best option
2. RAM setup, how much the speed of the ram matters and whether I'd go 16GB fast ram or 64GB slow ram or somewhere in between
3. GPU ideas, my understanding is one beefy one is better for boxing than 2 in SLI, if I understand things correctly with ISBoxer.
4. Any other ideas