Motherboard is an X99 Asus ROG Rampage V Edition 10. 64GB DDR4 (2133MHz non-OC). Is this 6-core/12-thread 6850K CPU enough for not limiting the GPUs at 4K? Otherwise I will have to buy 9xxx X-family CPUs (when they launch) to get those many CPU PCIe lanes for x16/x16 PCIe configuration needed for the two GPUs. (Will also have to shell out money for an X299 mobo then)