I am currently figuring out which parts to buy for a ~$550 gaming machine. With the parts I have now, I am over-budget with shipping. Then I got the idea that I can use an external dvd burner (that uses USB 2.0) that I occasionally use with my netbook in place of an internal one to save $30. What I would like to know is that if I do this, will I see less performance than if I would have used an internal SATA drive?