for the most part Ualaa is right on. The i5-750 is currently the best gaming bang for buck CPU. Will do great on WoW and most others. P55 motherboards are pretty close. Gigabyte and Asus are slightly ahead. 4x2G 1333 RAM will be fine, although it fills up most boards. 4 gig stick are starting to come down, but are still double the cost. Get a decent GPU and a SSD and you are set. You can try the 9800, but you will be upgrading that before long, I would not buy one now.