Hi @minxiesdev, thanks for your query. Assuming that you mount the Tobii 4C correctly on your laptop using the guides and magnetic strips provided, you should notice no difference of accuracy or precision between the integrated Alienware eyetracking and peripheral based.
That being said, of course with an integrated solution you have the ease of no cables or removable parts, but in terms of performance and reliability you can be assured of no difference between the two setups.
Should you have any further questions, please do not hesitate to get in touch again. Best wishes.