Thanks leetmodz for help.
seanmtc where can i set target temperature for GPU, GUIMiner does not have that option only CGminer has. Should i get rather CGminer?
cgminer is supposed to have some autotemp settings, though I've never used this as many people say it is ineffective and decreases hash rate, with an older ATI card I had I could set it using the GPU overdrive I believe, you can manually control the GPU fan for some AMD cards within CCC although I'd imagine having it maxed out would cause the fans to fail prematurely, as well as being extremely noisy, so try and get a nice balance