Is there any particular reason you're trying to centralize all of that computing power?
Just as ever shrinking manufacturing nodes have allowed for 20+ core counts on high end Xeon products, they've also given options on the other side of the price scale with low power consumption units such as Intel's NUC range. It's usually more cost effective and easier to maintain a network of full featured NUC's handling all tasks locally with centralized server storage. For the cost of one high end Xeon CPU (excluding motherboard, ram, power supply, storage etc) you could grab 10 x i5 NUC's.
The other thing to consider is core clock speeds. Typically in Xeon's you'll see lower clock speeds, but with more cores. Adobe, Corel and RIP software are generally horrible with multi-threading, and you'll see better performance with 4 higher clocked cores (~4GHz+) than with 8+ lower clocked cores (~2.2GHz).