I have a Lenovo z500t touchscreen laptop (core i5, 4gb RAM, 1tb hard drive, Intel HD4000) but it runs pretty slow with some games, even on low resolution. I know I have a free slot for RAM but does it have to be the exact same size and model RAM that's in the other slot or can I (for example) get an 8gb ram to work alongside my 4gb? Also I would like to upgrade my graphics card but I understand some laptops come with them integrated and therefore can't be changed I'm not sure if mine is able to or not. Thanks.
Read more: Can I upgrade memory and graphics card in my laptop?
