currently using 3930k@4.29Ghz, thinking is it upgrade whole system platform (CPU/Mainboard/RAM) to 5860x(8 core 3.0Ghz) or just upgrade to E5- 2690v2(10 core 3.0Ghz) better? since x79 mainboard can support e5 processor, 2690v2 around 2000usd, 5960x + x99 board + ddr4(let say 32gb) should be more than 2000usd. any idea?