...to play nearly all games with fullspeed(and with LLE,too)?
Operating System: Windows 7 Home Premium 64 -Bit
Processor/CPU: Intel Core i7-3770K 4.5 GHz~
Video Card/GPU: Nvidia Geforce GTX680
Memory/RAM: 8GB DDR3-1600
Dolphin Revision Currently Using: 3.0-749 64-Bit
It should.
But i've read a i5-2500k is better for gaming, but thats a i7 K edition, so it should run better.
Very good setup, dude
Almost all games are very playable.
What about playing Wii/GC games with nvidia 3d vision option?
Should be possible, your GPU is definetely able to handle this.
I've deactivated hyperthreading 'cause I've heard that it could be advantageous if you want to use dolphin!?
Is that correct?

Nope. HyperThreading won't influcene the performance (neither positive, nor negative).
Activate it and check "Lock Threads to Cores" in Dolphin.
I haven't got a cpu cooler yet.(except the intel boxed cooler)
When I'm playing super mario galaxy for example with LLE
the cpu-temperature goes up to 90-110°C.(I've overclocked my cpu to 4,5 GHz)
Are these temperatures too high?And if yes what cooler you can recommend me?

They are waaay too high, for what I've seen in the last 4 days, people get 51º~65º C in a i5-2500k @ 4.5 Ghz with a Thermaltake cooling system, and some other models.
Quote:Are these temps too high?
Yes. Stop and revert to stock clocks.
Quote:And if yes what cooler you can recommend me?
What's your budget?