Its not cost effective to use non E5-class Xeons, or go above 32GB DIMMs right now.... So you want a Dual-Processor setup, 16 DIMM slots, so 16x 32GB = 512GB w/ Dual Proc -- which you can do for about $10,000.
That's a very nice piece of kits for 10k I have to say. Thanks for the "sweetspot" price/perf advice. Seems like excellent value. I've had my heart on a badass mac pro but these specs put it to shame.
