Best graphic card for Studio 1535

[Nicterm]

Hello,
i'm currently using dell Studio 15 (1535) and would like to upgrade my graphic card from Radeon HD 3400 to Radeon HD 6990, is it compatible to my laptop?
Otherwise, wat is the best graphic card i can upgrade for my laptop?
Please advice.
Thank you.

 

[AMD Radeon]

laptop GPU couldnt be replaced...

 

[Nicterm]

Not even upgrade it?
Thanks.

 

[Nicterm]

laptop GPU couldnt be replaced...

Dear AMD Radeon,
Means i cant even upgrade my laptop graphic card???
Kindly advice.

 

[AMD Radeon]

exactly...
if you want to play games, ionvest at least 700 usd to have pc+monitor for gaming