If you're not going for a dual socket machine, I'm not sure there is that much advantage in having a Xeon over an i7. You may be better off with a 6-core i7 (might even be cheaper?) 24GB RAM would be nice to aim for on a 6-core machine.
You can probably also save money by going for a supported Geforce card rather than Quadro.
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Jon Bagge - Editor - London, UK
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