YoVSif :
ohhhhh i understand more batter .. so for me i just need a z97 board? also i just need 1 gpu maybe later might get extra lol ty and whats that z170 thing got to do?
Before going further I'd suggest that when you ask for help, you don't insult the people you are asking to help you. I have been doing windows based builds for 23 years.
The current consumer platform is Z170 (uses 6xxx series CPUs aka Sky Lake). It uses dual channel RAM. .... It's predecessor was the Z97 platform (4x90 series CPUs aka devils canyon). Before that we had Z87 platform (4x70 CPUs aka Haswell) ... and before that we had Ivy Bridge (3xxx) and Sandy Bridge (2xxx)
X99 is the current workstation platform. It was preceded by X99. Both use quad channel RAM. Gamers move up from the "consumer" platform to the workstation platform when they run out of PCI-E lanes. Each nVidia GFX card in SLI needs 8 lanes.... Z97 provided 16 lanes meaning it could handle 2 GFX cards (not gonna talk about PLX). So if a gamer wanted a 3rd GFX card (x8, x8, x8) , and say PCI based SSD (x4), then they went to the 28 lane 5820k. Want 4 cards ? then the 5930k w/ 40 lanes.
So.... if you are only using 1 GFX card, then you will get no gaming benefit over a 4790k / 4690k. If you were also doing CAD or other workstation apps, you got the 4790k with Hyperthreading. If you used some realluy demanding workstation apps, then you did have a reason to go to X9 as the extra threads help.... but many mistakenly believe CAD for example benefits from X99 (and quadro cards) but the truth of the matter is they do not. AutoCAD 2D and 3D work better on GTX cards.
If you want to compare the 5820k and the 4690k with apps you use, look at anandtech's CPU bench. Then gauge whether any difference is worth $200 not counting the RAM premium....or can that money be betetr spent on a bigger GFX card, SSD or SSHD.
http://www.anandtech.com/bench/product/1320?vs=1261
Scroll down tot he bottom and we see that the $219 4690k is faster (min fps) than the 4380 5820k in 4 out of the 5 games tested, one almost twice as fast. Look at the next 5 up from the bottom and the 4690k takes 3 outta 5. The 5820k has a 10% advantage in Sysmark media creation (video editing) . But if we move up tot he 4790k w/ HT, then we see that Z97 w/ the 4790k beats the 5820k by 10% ... and still saves a nice chunk of change ($100+).
So the 5820k costs more and delivers less. You'll need a 3rf GFX card in the mix to make the investment worthwhile.