A:AnswerThe internal components such as CPU and GPU are integrated on the mainboard and are not upgradeable. Acer offers the laptop products as is, and unfortunately we do not offer "build to order" products.
A:AnswerWith this model, no. Check the Predator Helios and Triton line of laptops that offer a 144hz LCD panel: https://www.acer.com/ac/en/US/content/predator-home
A:AnswerYes, the laptop includes the hdd cable and bracket to install a 2.5" hdd. Youtube has many videos on how to install a drive on the Nitro 5, AN515-43 model.