A family member brought me an Alienware D900k. Among other things, I would like to replace the gpu. It came with a super hot Nvidia GeForce Go 6800. And I found a Go 7950 GTX for a pretty reasonable price, the beauty is that this upgrade uses half the wattage, and will thus bring temperatures down, as well as boosting DirectX 10 capabilities. The hardware is compatible with the board, no question there. But, I've only ever replaced gpu's in notebooks with exactly the same model. Is there something I am not considering that could cause an issue here?