You're right, getting the best video card is far more important in gaming experience. Thus, the mtrbd. and ram should further support the video card for the optium experience. Even if you get a so-so mtrbd. but enough ram will be pleasurable experience. As for duo-core cpus, unless the game demands it, most won't really benefit or at least not as much as you think. But, it doesn't hurt to have duo-core for any other purpose. The best investment is to get 'namebrand' componets, like Nvida, Crucial ram, or those offering guanranted operation of the extreme kind. On top of all this a darn good psu really helps more than hinders. because gaming itself is so intense and demanding of a system its the best test for optium, so you need those optium componets, no ifs, ands, or buts. Also, don't forget cooling. Get cheap, expect cheap and even if it works for now, you will pay later with broken or failing system after x-days or months, it just does.
I have been looking at all the dual core this that, Mobo 1 is great Mobo 2 is not good, memory speeds etc. 1 thing that I notice is that no matter what you do you got to have a good video card. That said, if I purchase a top of the line video card what level of PC can I get away with building to still have a great gaming PC. I have built several PCs in the past but I am having trouble keeping up with all the new hardware. Thank you for the help