SaintSilver

Well thank you for clearing thinks for me  have a nice day

I'd love to help further but that is the extent of my experience. I've been looking to upgrade my microphone so i'd have to wait and see how that changes quality. A good pair of headphones and a condenser microphone will always sound worlds apart from any headsets. Any upgrade you make will sound better for sure, it's just how big of an upgrade at this point.

Oh ok thnx )

By limiting himself to VSync'd 60hz his GPU no longer has to process the FPS above that 60fps... not using all of the TDP available. (Example:60-65% GPU Usage with Vsync on)
 
By removing Vsync, his GPU is left to go 99-100% Usage constantly, using more TDP and in effect, causing more heat to dissipate.
 
Vsync is a good way to save some fan noise and heat, but you can always remove Vsync and use a frame limiter just the same if the Vsync input lag makes you mad.

Is your RAM actually running at 2100MHz? Afaik i5 2500k is meant for like 1333MHz RAM (I am running i7 2600k with 1600MHz RAM though...)
Your GPU can throw quite a bit of heat in your case, so that might affect things but...
You say you have 4 fans on your h100i, which means you added fans to it, did you happen to have mounted them the wrong way around?
That is, they both push air in to the radiator/they both pull air out of the radiator?

I would suggest you re-seat the CPU cooler and some fresh thermal paste is in order
 
Edit:
That GPU temp is ok btw, not pc breaking but it could run cooler.
What case is all of this in?