Hopefully people don't discount the cost of actually using this PC. The increased horsepower over a more energy-efficient model comes at a price. If you were to build this computer with 2 Xeon E5-2670's and two GTX 980 ti's, the at-load power consumption of this thing could exceed 900 watts per hour. Assuming you used the computer 8 hours a day for intensive tasks, or you just left it on all the time and didn't use it at load quite as often, the computer would likely be consuming $28-$33 dollars a month in electricity (I'm using an average cost of $.13 per kwh), or about $360 dollars per year. If you put together the same components on a newer board and with a more efficient processor, the computer would use anywhere from 220 to 290 fewer watts per hour. This doesn't sound like a huge difference, but it would be about $9 per month cheaper to run. That's over a hundred dollar difference per year. In a typical use-case, I'll guess that a person might keep this setup for about 3 years before upgrading/swapping any components. That's $300 more dollars in operating costs compared to a more efficient model over the typical-use lifespan of the computer. Just something to keep in mind. By the way, I ran my numbers using the calculator at
http://outervision.com/power-supply-calculator.