Can I replace a laptop's DEDICATED video card?

I am going to buy a laptop with a dedicated video card and I was wondering if it's possible to replace the laptop's video card. Like for example the one that I want has the Radeon HD 5730 and what if I wanted to buy a separate Radeon HD 5870 and replace it, is that possible? I know that laptops with integrated graphics have their video chip as part of the motherboard, but are dedicated cards in laptops replaceable?|||I can see you know what you're talking about, but you seem to be thrown by the totally redundant adjective 'dedicated'



'dedicated' was what you added to the name ' graphics card' when integrated graphics were the norm. Only about 5 or so years ago really. A 'dedicated graphics card' is just a graphics _card_ as opposed to an integrated graphics chip. It's literally a card housing a GPU and RAM dedicated specifically to that GPU's computing needs



so, in short, you can change a 'dedicated video card' for another without too many issues.