Now these are heavyweight flagship processor from Intel. Before go for shopping these processor I would like to advise you to consider some fact. Like the advantage these processor offering you or really you need these processor or not. First consider the technical facts. The technical data states that you could over clock Intel Core i7 980X Extreme Edition and Intel Core i7 960 and from the various forum I read that you could also over clock other two processor  with the help of  high quality motherboard and adequate power supply. These all processor have hyper threading ability and all of them support ddr3 ram. And last of all theses beasts are real power hungry. So you needed to make sure that your PSU (Power Supply Unit) is up to the task. Otherwise frequent shutdown or hang could occur.

Now I would like to discuss to whom these processors are necessary. From my observation if you need a gaming pc or your work on heavy multimedia then you will find the fun of work from these processors. But if you think on short term which means you are buying PC for one year time (the way computing powers increases, an up to date pc could become obsolete within a year) and if you think you will buy one for only use office or some light program then you should go for cheaper Intel Dual core, core to duo or AMD dual core.

Another thing is over clocking. As I previously mentioned that you need high quality motherboard for over clock. Because of the handling of extra load of voltage which will require for over clock the processor. One other thing is the cooling option of motherboard. It is tactless of me to mention the name of the company but one definite version of motherboard set on fire when high performance processor add up to the system. Later investigation finds that cooling option is not adequate which create this mishap. So before make a buy it is better to do some research.