Thank you guys very much for help so far. I have opened case, purchased table fan and its blowing right onto card. Temperatures on 50% GPU fan are now 75 degrees.
I dont want to open new topic so i am gona ask here do i need to create two workers if i am using two GPUs each with its own GUIMiner instance runing? Becouse now it looks like that on Litecoin pool all i am getting is read in KHahs only from 1 card, so i am guessing i need two workers.
Also do you guys think its ok to run 2 r9 290x GPUs at max + CPU I3 4130 (all three of them mining)? I am on 850W PSU.
I'm glad you got the temp problem fixed! As for the workers, I am not sure.
To your last Q, it depends if guiminer is already combining some of the cpu power like Cudaminer does on Nvidia cards. On Cudaminer, if you run a cpuminer as well, the gpu kh/s goes down more then cpu mining adds. You will have to test it and see. 850w gold, silver or bronze? I say gold and silver rating would probably be ok for that setup.