What was the solution for this?
I think MVC is simply pointing out that, with a nMP, you won't ever encounter noisy aftermarket video cards because there will never be any aftermarket video cards.
On a related note, now that most folks install SSDs that allow booting in about 10 seconds, a solution to excessive cMP* noise while sleeping could involve the shut down function.
As Lou notes, with a proper PCIe card USB3 on a cMP works great.
As they say, different strokes...
*cMP = cheesegreater Mac Pro.
I kid about the greater part, but the cMP is no slouch, especially when factoring in bang for the buck.