How to identify ati radeon bga chip

Ishmael22dpl

Honorable
Jan 21, 2013
1
0
10,510
Hello,
trying to ID an ATI Radeon GPU on a Studio XPS 1640 laptop. MB "dead" and needs to be replaced.
ATI number is: 216-0683010. Other numbers etched on chip surface: PA9880.00 and 0837 SSY.

Want to make sure I'm replacing with equivalent Mother Board.
Thank you
 

hd3650 per the first part number you posted.