For "everyday computer" use(web browsing, excel, ect.), and gaming a 980Ti itself should be just fine overall. Is your 2600K OCed at all? Do you have an SSD in your system right now? Would you be installing games, OS, or both on SSD(s)? Both the X99 Haswell-E and Skylake platforms themselves are very nearly identical feature wise. They both offer same storage options(M.2 and SATA Express), utilize DDR4, 802.11AC on certain boards. However, Skylake is technically the newer platform and has 20 PCI-E 3.0 lanes in the chipset itself. Haswell-E has 28-40 lanes in the CPU itself depending on model. Since your not doing professional work, you likely aren't going to need more than 4-Cores. X99 2011-v3 currently has up to 8-Core CPUs, whereas Skylake Z170 will max out at 4. With this in mind, in gaming both platforms will perform about the same w/ CPU's at around the same clockspeed.