Alright this question has been on my nerves for a long time, so i finally decided to ask, and hopefully someone has a logical answer.

Why do video boards have ram that runs stable in mhz way higher then the top system ram when slot into our mainboards?I run my ddr on my ti4200 at 600 sometimes, i'd like to see any of the newest system ram do that.What is the problem of using video ram quality on systems?

Why do video boards have cores that are so much slower then a cpu? After all isn't it just crunching 1 and 0's? Why not just use a core of 3.0ghz on the newest nvidia or ati? I know it would be very costly but there surely would be a market for such a high priced card that would absolutely whoop ***?