I was told when building that the graphics built in the 2600k CPU would be able to run world of warcraft on ULTRA settings with 1920 X 1080 (wide) resolution. I recently tried this and it wasn't smooth at all. Was wondering if I do need a graphics card or if there's something I can adjust in BIOS. Any help appreciated!
If you can afford it ~$210, I've seen the Nvidia 660 outperform more expensive cards in benchmarks for WoW. I'm fairly confident you'd max out settings with that card, but you always need to take into account that WoW is more cpu and connection based, especially when you're playing in crowded areas or in 25 man raids. Your internet connection and relative location to the server really affects ping and actually will increase the lag/choppiness of play more than the GPU most likely.
This being said with my setup i5-2500k and a 460gtx I run on at least high settings all the time with little issue.
I play WoW (don't tell anyone) at 1920x1080 on an i3-2120 & Sapphire 6850 (stock speeds) on Ultra. The only time I see my FPS drop is in Stormwind at peak times and the lowest I've seen it go is 48. For a $150 you could grab a 6850 and be happy.