First things first, I believe that you will need a Professional / Workstation graphics card, IIRC Maya does not support desktop (gaming) GPU's, or is it only the Kepler's (nVidia 6xx series), that it doesn't support, will have to double check that. Typically for a dedicated Entertainment Creation Suite workstation, I would recommend a Xeon system, but that'll blow your budget out of the water because you're then looking at ECC or Registered ECC RAM, a dual processor server motherboard, although some of the desktop single processor x79 LGA 2011 motherboards are more costly than a nice Supermicro dually. Plus you'll need to go by the motherboard vendor's certified hardware list to ensure maximum stability & reliability.
Basically, you're looking around $4k in a Xeon system to get equal performance to the 3930k for $2k. However, the Xeon system would have a considerably wider upgrade path for future expansion, and you can sacrifice a bit of performance for now & bring the price differential much closer.
Here's an example of a "lower cost Xeon" that doesn't sacrifice a ton of performance... food for thought if you will:
CPU: Xeon E5-2620 Sandy Bridge-EP 2.0GHz 6-core CPU w/HT
Motherboard: Supermicro MBD-X9DA7-O Extended ATX Dual LGA 2011
Memory: Samsung 4GB DDR3-1333 M393B5273DH0-CH9 Registered ECC DIMM
$44 Each x4 = $176 for 16GB or Samsung 8GB DDR3-1333 M393B1K70DH0-CH9 Registered ECC DIMM
$58 Each x 4 = $232 for 32GB or $464 for 64GB
OS & Programs Drive: Samsung 256GB SATA III SSD
$200 or two 128GB versions for slightly less & have the second one as a dedicated swap drive
Storage Drive(s): Seagate ST32000645NS 2TB SATA 6GB S Constellation ES.2 7200RPM 64MB Cache HDD
Power Supply: Seasonic 80+ Platinum 860 Watt PSU
GPU: PNY PNY VCQ2000D-PB Quadro 2000D 1GB 128-bit GDDR5 PCI Express 2.0 x16 Workstation Video Card
Not Including a case or optical drive, thats about $2200 with the 16GB RAM option. Picked the drives & RAM based on Supermicro's "Tested" lists. The PSU is a bit of overkill, but I included it for future expansion including dual 150W CPU's & a more powerful GPU as budget or funding increases.
Though this system would be slower than a i7-3930K based system and more expensive, the advantage of it, is that you can add a second identical processor later on when prices come down or you get more available funds & even further down the line or if you suddenly find yourself with a financial windfall, you could upgrade to a pair of E5-2670 or 2.6GHz 8-core Xeon's (or better) for a significant performance boost. Where as the only current upgrade option to the 3930K is the Extreme edition 3960k for nearly double the price of the 3930k but only a small performance increase, beyond that, you're looking at a October 2013 before the next batch of LGA 2011 desktop CPU's come to market.