What i meant when i said "what does that mean" is what does having a dell mean, i understood the bad card thing, sorry if i didnt clarify.
I ment you own a Dell brand computer. I was only saying that due to the fact that your setup is about what their standird build is.
Anyway, like said before, useing that thread as a way to figure out how to get the most out of your card could help you out, but to truely fix the problem your going to have to get a better card.
Cheers
Cameron