Please, need some assistance from tech-savy people (5kpp reward if it's allowed :p)

[deakolt]

Nevermind. You're completely fuct with that graphics accelerator sorry bud

To answer your question: No it's not a dedicated card. It doesn't have it's own memory banks (which could also help to explain why your 4GB is showing up as 2GB, can't recall a machine where system shit alone took up 2GB)

edit: this wasn't super clear, basically your "video card" borrows memory from your RAM when it needs to do shit