upgrading graphics module in M6300

I have just bought a Dell Precision M6300 and I am trying to find out if it is possible to upgrade the Quadro fx 1600m graphics module to a fx 3600m?

Has anyone managed to do this?

 

well, it is possible to buy it in America however not on the UK Dell Store, you could email them or look on Ebay (Yes it is possible!!!!!!!!!!!!!)

 

I just looked on the Dell USA website and they $1000 for a refurbished fx 3600m card?!!!!!?
That's more than the cost of a secondhand M6300 with an fx 3600m card in it!

I've gone off the idea if it's going to cost anywhere near that much. I'm still waiting to hear back from Dell UK.