I'm planning to build up my own pc. For that i have almost all the parts chosen but i want to get one of the core i7 cpu. I'm little bit confused between Intel core i7 920 and Intel core i7 975 extreme cpu. I can wait little longer and get the core i7 975 extreme which has a clock speed of 3.33Ghz and the 920 @ 2,66Ghz. But i would like to know the actual differences between Intel core i7 920 and Intel core i7 975 extreme cpu? Does any body knows about it? Kindly provide me the correct information on the above topic. Any help you can provide would be greatly appreciated. Thanks.