2x xeon 2680 v2 = 20 cores / 40 threads
Nvidia Titan Black edition 6Go
32Go ddr3
SSD 256go (480Mo/s tested)

Low or Ultra settings no change (0-4fps)
And i have 15-24fps in Multiplayers

CPU usage : 4%-8% (but the first thread is near the max)
GPU usage : 25-50%