New build, Buss speed

[Behunin]

I just have a quick question that I cant find the answer to anywhere, What is the fastest bus speed out there? And, what motherboard would this be found on, please include price if you know it. The processor socket does not matter yet as I am looking for motherboard first.

 

[rgd1101]

bus speed, don't matter as much as the cpu. What your budget?

 

[Behunin]

I have a little over 1.5k