Before you upgrade the video card, check your power supply. Dell's power supplies are notoriously weak. They claim their rating is somewhat undervalued compared to others, because others are rated at peak output, whereas dell rates theirs at its normal output. I'm not sure I would rely on that. I just purchased a dell which should have come with at least a 450W power supply. It is rated at 300. I knew that going in and don't need to upgrade my video card immediately, but when I do, I will have to upgrade the power supply as well. Oh, and Dell's power supplies used to be proprietary, they may still be. You will have to check on that.