Welcome to SevenForums.
Quote:
I have heard about external graphics cards and 'switchable graphics'.
Here is an article on basically what "switchable" Graphics in Laptops is all about.
Nvidia automates switchable mobile graphics with Optimus - TechSpot News
I realize this is about Nvidia but it also should apply with any combination of GPU's.
Quote:
I have a chipset that allows switchable graphics, so is there a way of upgrading my graphics to something better?
No not really since the GPU chips are soldered into your motherboard. So even if you could find someone capable of removing the 4500MHD chip he would also need to find and purchase a higher quality GPU chip that most likely wouldn't be able to simply be re-soldered into the old chips socket, then their could be all kinds of compatibility issues I would think.
Basically your stuck with what you have.
I have only been able to find this setup that allows for the use of a full size PCI-e graphics card.
http://www.magma.com/expressbox1.asp
The only video I could find on how it is setup
http://www.externalgraphicscard.com/
This is really not a solution for your issue since this requires a laptop with a PCMCIA port, the MagmaBox1, additional LCD and a full size better graphic's card.
Also below this thread you'll see other threads on your graphics chip and also switchable graphics information.
Hope this helps answer some of your questions and I haven't made it to confusing as you can see I have edited this post(several times) trying to provide the best information available . Fabe