If your "Upgrading" your old computer, you probably still don't need to know what a GHz is. If your "Replacing" your old computer then maybe ok. It is unlikely you will upgrade your old comptuer and change out the processor. It is just too expensive. If your looking to buy a new computer then by all means read.
If you don't know what a GHz is and you don't know much about computers except where the power button is and that they are good for games and surfing the internet then I have a handy link for you.
http://www.dell.com/...n&s=soho&~ck=mn
I am in no way affiliated with Dell. Why a Dell?
Because its easy to get something pretty good at a decent price. If your not into building your own, or learning about all the parts and having someone else build you a computer, going with a prefab computer like a Dell or an HP is an easy option. I urge you to go to the various computer vendor websites and check them all out. Just google for Dell, HP, Samsung, Sony, Acer, Lenovo, I am sure there are some big ones I am missing.
I would recommend getting a desktop if your going to be gaming with it. You just get so much more computer for your money, but often that is not an option. If your set on getting a laptop I urge you to go with a higher end system that has an i7 CPU. If your getting a desktop you can go with the i5 or i7 systems.
I would also urge you to go with 8gb of RAM. 12 and 16 are better, but 8 will last you a long time and your probably not going to notice much performance difference.
If its in your budget you should probably consider a video card upgrade option with all these systems. Just look at their customize options and check for the video card to have better versions you can upgrade to before your computer is sent to you.
If you get a prefab computer like a Dell you don't really need to worry about any of the other components. Unless you have specific needs getting the CPU, RAM, and Video options right will give you a good computer reguardless of any of the other components you pick.
Now if you do know or want to know what a GHz is and you want to buy a truely custom computer. Getting something like a Dell is still an option. You just have the tools to be able to cutomize it more. But you can certainly go down to your local computer place and pick somethign out based on the original post points. I enjoy building my own desktop computers, but I personally happy buy a dell when I need a laptop.
Edited by Lomack, 19 June 2012 - 07:29 AM.