I have 2 GV-R929D5-4GD-B gpu. I've tried a lot of settings to take good result without anyproblem. I could not successfull to stability. I need minumum 440 khas Fan Speed %85 Temp below 80 My GPUs: http://www.gigabyte.com/products/product-page.aspx?pid=4821#ov Windows 7 Pro x64 GV-990FXA Mainboard Sempron 145 8GB Ram SSD HDD I use simplevert http://www.simplevert.com/VkZo9ShHXSB7RRNDc3nGbQM4ZkoBAc3jTc My settings : Tc 24550 w 512 clock 1000 memory 1500 My WUE value must be 90+ I will pay for stable 90+ config 5 VTC