Tecra M3 graphics

I know many have asked this question about laptops and upgrading graphics. However, I would like to enquire more about gfx chips offered WITHIN a model range.

For example, the M3 gives buyers a choice of GF 6200 or 6600 chips. Does this mean toshiba has 2 graphics chips interchangeable between M3s? B'cos I though the hype of this PCI express thingy was the ease of integrating new stuff as they are released?

If the graphics chips are indeed interchangeable (ie not hard wired to the board), are they MXM modules or proprietry Toshiba items? What's the possibility of getting one? THanks

 

I'm assuming that it is a different motherboard.

Because the 6200 would be classified as a MXM I, 6600 as a MXM II, and 6800+ is a MXM III(If I recall correctly) and each are made in different sizes as they are for thin/lights, mainstream and Desktop replacements, respectively.

 

Oh..is that so? B'cos I was thinking that it would not be economical for notebook mfgs to use 2 separate boards just so that they could offer 2 graphics chip choices. Usually economically speaking we would want to use one board design for as many chip variations as possible right?

 

Yea, Wish that was true

However, I'm not 100% sure, hope I'm wrong!