mrcheeps :
Let's say I'm running the game along with 2 windows, with 2 tabs each. Would it still cover the game requirements?
If you are running the game then your other 2 windows are probably not doing anything and thus won't have an affect on your game. OTOH if you have some windows open doing downloads, virus scans, etc. then that WILL affect your game.
I have 2 machines that I use every day, one with a dual core and one with a quad core. The dual core processor is a faster processor, but sometimes slows down when there are several things actually running at the same time. My quad core machine does not slow down when I have multiple things running. I can be using the machine and it is running fine and very responsive, and only later do I find out that I had a virus scan running in the background the whole time.
I think power users should have quad cores in their desktops. Laptops are a different story, since there are battery life and heat implications with more cores in a laptop. But only you can weigh the pros and cons and pick.
Oh and as mentioned, you have to find out if your games can use multiple cores. You could have a lot of cores but if your apps don't make use of them then your apps won't benefit directly from a lot of cores.