Doesn't 3dsmax support Cuda or open CL for final frame rendering? If it does... I would be useing that seeing as how GPU's rendering in professional studio style programs really punish's the CPU's as far as rendering time goes.
That being said if it does and you know how get it working. You could get an 8350/20 and use cuda or Open CL. (using an Nvidia Titan GPU if you want to do it cheaply or quadro for cuda, or Radeon 7970 for open CL)
If it doesn't and you value your time... You are going to want either A. Intel systems or B. duel opteron CPU motherboards.
But I mean thats a question for the 3dsmax boards :-).
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