Hi,
I think that the single 8 core Xeon E5-2630 v3 (8C, 2.4GHz, Turbo, HT, 20M, 85W)is the wrong choice, look for something with a higher clock speed and less cores.
I'd suggest the Intel® Xeon® Processor E5-1630 v3 (10M Cache, 3.70 GHz) or Intel® Xeon® Processor E5-2637 v3 (15M Cache, 3.50...