This looks like the best I can do @ 2860.... got nothing left to tweak!!

C-N- 5:57:781 - 49x102 - 1430MHz 9-12-12-15-108-1 - Asrock Z87 OCF/AC - Corsair 2666 C10 2x4GB/Samsung HCH9 - 2.02v - CPU Water Kuhler 920 / Ram Air