|NCC is the key to enable disabled cores. Some disabled cores are actually bad so enabling them will make system unstable. If that occurs disable them.|
Try 240 x 16, if unstable raise CPU voltage and make sure not to exceed 1.4V. Also watch the memory frequency(by raising base clock automatic raise memory frequency) and CPU temp(max operating temperature is 70C).
You know the real meaning of peace only if you have been through the war.