Lestat
Banned
Well this is not a store but it a great place to locate what your looking for. Notebookreview.com. Please note I took a Upper Mid range laptop. I had a Alienware M17x r2 with dual ati 4870. Because the graphics card where defective Dell upgraded them to dual ati 5870Also try http://www.pcspecialist.co.uk/
They do custom PC's and laptops. I bought my last desktop from them and the service was great.
I am also going to purchase a gaming laptop from them for ED as they have a good selection of chassis' to choose from.
Note there could be issue upgrading a graphics card in a laptop.
1 You might have to manually control the Fan on the gpu. Using HWinfo for fan control
2 Stuff like HDMI might not work but your fans do work.
Do this at your own risk. research, research and do more research before doing something like this.
The only thing I been upgrading is the Ram to 16gb and SSD drive and then Overclock a unclockable cpu