1. Is there a difference between the cheap cards and the expensive cards?
2. I notice on some cards there are 4 external ports and one internal port. What is the internal port used for.
PS. I am new to this site and have been reading the forums. Excellent info. I am convinced not to buy a new computer for another year. I want to take advantage of all the new hardware coming out. So I'll let the dust settle than pick one up. So for now I will merely upgrade.