Die_Kapitan wroteThe 2600K is still a very solid CPU, wait for Zen, Kaby Lake and Broadwell/Skylake-E before upgrading. You can get a used P67/Z68/Z77 motherboard for cheap from eBay and that'd keep you going until Q4 2016/Q1 2017 when all the good stuff comes out. Having said that, Skylake is the first architecture that's worth an upgrade from Sandy Bridge, so if it's an absolute must, upgrade to an i7 6700K, yes the 5820K has 2 more cores and 4 more threads, but you don't need 6 cores, you'll do fine with 4 cores with HT, X99 motherboards are more expensive too, you're looking at at least $250-ish just for a motherboard compared to $150-ish for a Z170 motherboard.
I see.
Well I may need 2 extra cores because right now, I am running two different PC one for win the other for linux.
Running VM is easier I guess... But like I've said I may never run VM.
But I'll take your opinion in consideration. I just ordered a new PSU. If everything went ok. I'll wait.