Well I built the rig in my signature 2 months ago and used a Zerotherm copper butterfly cpu cooler http://www.newegg.com/Product/Product.aspx?Item=N82E16835887001 (except mine was the model with a fan attached) and I also had an XFX 7900gs with the stock cooler. Well CPU temps were @ 92-95 f idle and gpu temps were 117f. I replaced the Zerotherm with a Zalman http://www.newegg.com/Product/Product.aspx?Item=N82E16835118019 and replaced the gpu stock cooler with a Zalman vf-900. Now cpu temps are 86-88f and gpu is 93f. Also gpu is a lot quieter. A big diff. in my opinion. Zerotherm had some good reviews but was just too new a company and Zalman has the better product for sure in my mind. I also switched thermal paste from AS5 to Zalman stg.